{"title":"audioXpress - Glass Audio Editions","description":"\u003cp\u003eaudioXpress publishes its Glass Audio edition each May\u003c\/p\u003e","products":[{"product_id":"audioxpress-may-2018-pdf","title":"audioXpress May 2018 PDF","description":"\u003cp\u003e\u003cstrong\u003eVolume 49\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMay 2018\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpFirst\"\u003eFrom the Editor's Desk: \"How We Began\", by J. Martins, p. 4\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eIt's About the Sound: Exploring Master Quality Authenticated (Part 1): Measuring the Difference, by Ron Tipton, p. 8\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eBack EMF Phase Relationships in Moving Coil Loudspeakers (Part 1): Identifying, Quantifying, and Modeling Back EMF, by Andy Lewis, p. 14\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eAcoustics in Performance, Review by J. Martins, p. 24\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eSchiit Audio’s High-Value Ideas, by Oliver A. Masciarotte, p. 26\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eTransformers for Tube Amplifiers (Part 1) - Transformer Basics, by Gerhard Haas, p. 32\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eDIY Tube Amplifier Heat Management Options, by Patrick Brunner, p. 42\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eTubeSociety 2A3-300B SE Amplifier Project (Part 2) - Saving the Best for Last, by Menno van der Veen, p. 46\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eHollow-State Electronics: Comparing Output Waves of Tubes, FETs, and BJTs, by Richard Honeycutt, p. 58\u003cbr\u003e\u003cbr\u003e\u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\u003c\/p\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":18094905655414,"sku":"AX-FI-2018-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2018-05-May.jpg?v=1545769098"},{"product_id":"audioxpress-may-2017","title":"audioXpress May 2017 (PDF)","description":"\u003cp\u003e\u003cstrong\u003eVolume 48\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMay 2017\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpFirst\"\u003e \u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpFirst\"\u003eFROM THE EDITOR’S DESK—The Positive Energy of Tubes, by João Martins, p. 4\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eIT’S ABOUT THE SOUND—Streaming Music Experiences (Part 5): Streaming from Sonos and Deezer, by Ron Tipton, p. 8\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eETAL Anaview ALA0080 Class-D Module, by Ward Maas, p. 14\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eDynaco ST-70 Series 3: The Inside Story—A Long Road, by Dan Fraser, p. 20\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eThe Korg Nutube, by Pete Millett, p. 28\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eKismet 5: The 20\u003csup\u003eth\u003c\/sup\u003e Anniversary Edition: The Evolution of Its Design, by Fabio Camorani, p. 34\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eHigh-Quality Hi-Fi Circlotron Power Amplifiers, by Gerhard Haas, p. 44\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eFour Gadgets for Tube Enthusiasts, by Bruce Brown, p. 52\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003eInrush Current Protection for Tube Amps, by Scott Dorsey, p. 58\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpLast\"\u003eHOLLOW-STATE ELECTRONICS—Phonorgraph Recording and Playback Electronics, by Richard Honeycutt, p. 60\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e \u003c\/p\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":18106063585398,"sku":"AX-FI-2017-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2017-05.jpg?v=1545769096"},{"product_id":"audioxpress-may-2015","title":"audioXpress May 2015","description":"\u003cp\u003e\u003cstrong\u003eVolume 46\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMay 2015\u003c\/strong\u003e\u003c\/p\u003e\nFROM THE EDITOR’S DESK—Glass Audio Special—Still Loving Tubes, by João Martins, p. 4\u003cbr\u003eSTANDARDS REVIEW—Wireless Audio (Part 8): Microchip Wireless Audio Platform Portfolio, by João Martins, p. 10\u003cbr\u003eSignal Dynamic and Loudness, by Ron Tipton, p. 18\u003cbr\u003eTrue Bass Rides Again (Part 2): The Power Questions, by Thomas Perazella, p. 22\u003cbr\u003eHEADSETS—Ribbon Planar Magnetic Designs, by Mike Klasco and Steve Tatarunis, p. 30\u003cbr\u003eQUESTIONS \u0026amp; ANSWERS—A Career Built on Respect and Quality: An Interview with Richard Schram, Founder of Parasound, by Shannon Becker, p. 34\u003cbr\u003eUpdating the Bogen MO100A Amplifier, by Bruce Brown, p. 38\u003cbr\u003eUse an Antique Radio to Listen to Your Vintage Playlist, by Gregory L. Charvat, p. 42\u003cbr\u003eExtending the Arduin0-Based Tube Power Amplifier Controller, by Mark Driedger, p. 46\u003cbr\u003eBuild a Push-Pull Triode Power Amplifier: This Design Uses ECC 99 and ECC 832 Tubes, by Gerhard Haas, p. 52\u003cbr\u003eWhy Tubes Sing and Crackle, by Gerhard Haas, p. 56\u003cbr\u003eHOLLOW-STATE ELECTRONICS—Pro Tube Power Amplifier Circuits, by Richard Honeycutt, p. 60","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":18137251020918,"sku":"AX-FI-2015-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/14285126304512099840263.jpeg?v=1545769086"},{"product_id":"audioxpress-may-2016","title":"audioXpress May 2016","description":"\u003cp\u003e\u003cstrong\u003eVolume 47\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMay 2016\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpFirst\"\u003e\u003cspan\u003eFROM THE EDITOR’S DESK—From Glass to Bits, by João Martins, p. 4\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e\u003cspan\u003eHigher Order Ambisonics (Part 2): Another Immersive Format, by Ron Tipton, p. 8\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e\u003cspan\u003eSTANDARDS REVIEW—Audio Network Development (Part 5): Developing Products Featuring AES67 Network Connectivity, by João Martins, p. 14\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e\u003cspan\u003eUVI Falcon: Discovering a Creative Hybrid Musical Instrument, by Fernando Rodrigues, p. 24\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e\u003cspan\u003eAn Octal Triode Line Stage Preamplifier, by James Lin, p. 32\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpMiddle\"\u003e\u003cspan\u003eA Silk Purse: Revamping Old Organ Tube Amplifiers, by Bruce Brown, p. 40.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"departmentsitemCxSpLast\"\u003e\u003cspan\u003eThe Beast Matcher: A Matching and Burn-In Device for Power Tubes, by Bruce Heran, p. 48\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"featuresauthor\"\u003e\u003cspan\u003eUniversal Tube Power Amplifier System, by Gerhard Haas, p. 52\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"featuresauthor\"\u003e\u003cspan\u003eHOLLOW-STATE ELECTRONICS—Impedance Matching in Hollow-State Circuits and Equipment, by Richard Honeycutt, p. 62\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"featuresauthor\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":18137838190710,"sku":"AX-FI-2016-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2016-05.jpg?v=1545769093"},{"product_id":"audioxpress-may-2014","title":"audioXpress May 2014","description":"\u003cp\u003e\u003cstrong\u003eVolume 45\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMay 2014\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—What’s Next in Audio?, by João Martins, p. 6\u003c\/li\u003e\n\u003cli\u003eAudio Power Amplifier Design: A Review of Douglas Self’s Latest Amplifier Book, by Peter Delos, p. 8\u003c\/li\u003e\n\u003cli\u003eSTANDARDS REVIEW—RAVENNA (Part 1): The Scalable Audio Network Solution, by João Martins, p. 10\u003c\/li\u003e\n\u003cli\u003eiZotope RX 3 Advanced: In the Kingdom of Audio Magic, by Fernando Rodrigues, p. 16\u003c\/li\u003e\n\u003cli\u003eTang Band D52-1 Two-Way Speaker Kit: Assembling Our Own Speakers, by Elektor.LABS, p. 24\u003c\/li\u003e\n\u003cli\u003eSPEAKERS—Bass Shakers (Part 2): Motion Platforms Are Bass Shakers on Steroids, by Mike Klasco and Steve Tatarunis, p. 28\u003c\/li\u003e\n\u003cli\u003eSOUND CONTROL—CATT-Acoustic, by Richard Honeycutt, p. 32\u003c\/li\u003e\n\u003cli\u003eQUESTIONS \u0026amp; ANSWERS—Triad Speakers CEO Evolves into an Industry Leader—An Interview with Larry Pexton, by Shannon Becker, p. 38\u003c\/li\u003e\n\u003cli\u003eThe Hillman Tube Amplifier: An EL519 Triode-Connected Push-Pull Amplifier, by Wim de Haan and Kees Heuvelman, p. 42\u003c\/li\u003e\n\u003cli\u003eConstant Current for Tube Heaters, by Bill Reeve, p. 52\u003c\/li\u003e\n\u003cli\u003eA Reborn 1954 Futterman OTL Amplifier, by Fabio Camorani with Marco Pagogna, p. 52\u003c\/li\u003e\n\u003cli\u003eHOLLOW-STATE ELECTRONICS—Hollow-State Capacitor Microphones, by Richard Honeycutt, p. 58\u003c\/li\u003e\n\u003cli\u003eMEMBER PROFILE—Antonio Velasquez, p. 64\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":18138550534262,"sku":"AX-FI-2014-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2014-05.jpg?v=1545769083"},{"product_id":"audioxpress-may-2019-pdf","title":"audioXpress May 2019 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description \"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eVolume 50\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eMay 2019\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—More Tubes, More Sourcing Options, by J. Martins, p. 4\u003c\/li\u003e\n\u003cli\u003eSOUND CONTROL—Miking Instruments: A Few Techniques, by Richard Honeycutt, p. 8\u003c\/li\u003e\n\u003cli\u003eThe Nu:Tekt HA-K1 “Tube” Headphone Amplifier by Korg\/NuTube: Power, Psychology, and Distortion, by Erik Owen, p. 16\u003c\/li\u003e\n\u003cli\u003eRestoration and Revival of the McIntosh MC30 (Part 1): Rebuilding the MC30, by Bruce Brown, p. 24\u003c\/li\u003e\n\u003cli\u003eA Second Life for a Vintage Tube Amplifier, by Mark Driedger, p. 32\u003c\/li\u003e\n\u003cli\u003eBuild a Budget-Friendly High-Performance Valve Headphone Amplifier, by Bruce Heran, p. 36\u003c\/li\u003e\n\u003cli\u003eDesktop Vacuum Tube Headphone Amplifier, by Bill Reeve, p. 40\u003c\/li\u003e\n\u003cli\u003eAn Outrageous Mu Stage: An Update of My 1993 Mu Stage Design, by Alan Kimmel, p. 42\u003c\/li\u003e\n\u003cli\u003eQUESTIONS \u0026amp; ANSWERS—Experimentation Opened a Realm of Possibilities: Interview with Shannon Parks, Founder of Parks Audio, by Shannon Becker, p. 46\u003c\/li\u003e\n\u003cli\u003eSearching for a Unicorn (Part 1): Measuring Voltage Regulator Ripple Rejection, by Brian Lowe, p. 52\u003c\/li\u003e\n\u003cli\u003eHOLLOW-STATE ELECTRONICS—Square-Wave Testing, by Richard Honeycutt, p. 58\u003c\/li\u003e\n\u003cli\u003eARTICLE UPDATE—Corrections to the “Noise in Vacuum Tube Circuits” Article, by Richard Honeycutt, p. 64\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e   \u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":22512509878390,"sku":"AX-FI-2019-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2019-05.jpg?v=1554821515"},{"product_id":"audioxpress-may-2020-pdf","title":"audioXpress May 2020 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"product-description \"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eVolume 51\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eMay 2020\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.4em;\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—The Positivity of Tubes, by J. Martins, p. 4\u003c\/li\u003e\n\u003cli\u003eRødeTest FuzzMeasure Audio and Acoustic Measurement Software: A Classy “Swiss Army Knife” for Acoustic Measuring, by Luke McCready, p. 8\u003c\/li\u003e\n\u003cli\u003eStop Worrying About Coupling Capacitors, by Ethan Winer, p. 20\u003c\/li\u003e\n\u003cli\u003eAUDIO SCOPE—Noise Analysis for FDA-Based Audio ADC Drivers, \u003cbr\u003eby Michael Steffes, p. 30\u003c\/li\u003e\n\u003cli\u003eBuild This MoFo!, by Mike Rothacher, p. 34\u003c\/li\u003e\n\u003cli\u003eIn Memoriam of Gerhard Haas, p. 42\u003c\/li\u003e\n\u003cli\u003eRepurposing an Old Preamp for Line-Level Duty, by Bill Reeve, p. 44\u003c\/li\u003e\n\u003cli\u003eMini Blocks—Small Vacuum Tube Power Amplifiers: An Evolutionary Project Spanning 11 Years, by Bruce Heran, p. 50\u003c\/li\u003e\n\u003cli\u003ePowering Your Circuits (Part 4): AC Rectification and DC Power Regulation, \u003cbr\u003eby Ed Simon, p. 56\u003c\/li\u003e\n\u003cli\u003eHOLLOW-STATE ELECTRONICS—Adventures in Guitar Amplifier Repair, by Richard Honeycutt, p. 60\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e      \u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":33307434123401,"sku":"AX-FI-2020-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2020-05.jpg?v=1586441032"},{"product_id":"audioxpress-may-2021-pdf","title":"audioXpress May 2021 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp\u003e\u003cstrong\u003eVolume 52\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eIssue 5\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eMay 2021\u003c\/b\u003e  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—A New Window for Vacuum Tubes, \u003cbr\u003eby J. Martins, p. 4\u003c\/li\u003e\n\u003cli\u003eGLASS AUDIO—The Original Western Electric 300B Vacuum Tube: Now Shipping Worldwide, by Richard Honeycutt, p. 8\u003c\/li\u003e\n\u003cli\u003eGLASS AUDIO—Using Chaffee’s Method of Load Lines, by Scott Dorsey, p. 14\u003c\/li\u003e\n\u003cli\u003eGLASS AUDIO—Experimenting with Tube Sound, by Bill Reeve, p. 20\u003c\/li\u003e\n\u003cli\u003eGLASS AUDIO—The Cranberry: A Versatile Stereo Vacuum Tube Amplifier, \u003cbr\u003eby Bruce Heran, p. 26\u003c\/li\u003e\n\u003cli\u003eAUDIO SCOPE—Determining the Real Output Current for Op-Amps and Fully Differential Amplifiers, by Michael Steffes, p. 36\u003c\/li\u003e\n\u003cli\u003eMeasuring Vibration with Piezoelectric Sensors (Part 2): Design and Construction, by George Ntanavaras, p. 40\u003c\/li\u003e\n\u003cli\u003eNoise Is Everywhere—Even in MC Input Transformers (Part 1): A Special Survey for Skeptics, by Burkhard Vogel, p. 48\u003c\/li\u003e\n\u003cli\u003eThe Science and Physics of High-End Mic-Preamp Design (Part 4): Different Approaches, by Mike Meechan, p. 54\u003c\/li\u003e\n\u003cli\u003eHOLLOW-STATE ELECTRONICS—Vibrato and Tremolo, \u003cbr\u003eby Richard Honeycutt, p. 60 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cspan style=\"font-size: 1.4em;\" data-mce-style=\"font-size: 1.4em;\"\u003e \u003c\/span\u003e       \u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":39719098089631,"sku":"AX-FI-2021-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2021-05.jpg?v=1618234423"},{"product_id":"audioxpress-april-2022","title":"audioXpress May 2022 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp class=\"p5\"\u003e\u003cb\u003e\u003c\/b\u003e\u003cb\u003eVolume 53\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eIssue 5\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eMay 2022\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—The End of Cheap Tubes, by J. Martins, p. 4\u003c\/li\u003e\n\u003cli\u003eMARKET UPDATE—The Enduring Appeal of Vinyl, by J. Martins, p. 8\u003c\/li\u003e\n\u003cli\u003eOrchard Audio Starkrimson Stereo Ultra: Pushing Power Amplifier Performance Boundaries, by Stuart Yaniger, p. 16\u003c\/li\u003e\n\u003cli\u003eBirds of a Feather: Western Electric’s New Production 300B, by Michael Boele, p. 22\u003c\/li\u003e\n\u003cli\u003eMeet the Pentriode, by Alan Kimmel, p. 38\u003c\/li\u003e\n\u003cli\u003eAdding Bluetooth to a Tube Amp, by Merlin Blencowe, p. 40\u003c\/li\u003e\n\u003cli\u003eSOUND CONTROL—Effect of Air Conditions on Sound Propagation, by Richard Honeycutt, p. 44\u003c\/li\u003e\n\u003cli\u003eAn Introduction to Testing Vacuum Tubes (Part 2): Choosing the Right Tube Tester, by Mark Driedger, p. 48\u003c\/li\u003e\n\u003cli\u003eBuilding a Guitar-Controlled Synthesizer: Frequency to Volts and Back, by Ethan Winer, p. 54\u003c\/li\u003e\n\u003cli\u003eHOLLOW-STATE ELECTRONICS—Graphical Analysis of Class-A Amplifiers: Developing a Love of Designing Hollow-State Electronics, by Richard Honeycutt, p. 62\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":42777337790678,"sku":"AX-FI-2022-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-2022-05.jpg?v=1649695330"},{"product_id":"audioxpress-may-2001-pdf","title":"audioXpress May 2001 PDF","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eaudioXpress May 2001\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEditorial: \"Is Music Property?\"\u003c\/li\u003e\n\u003cli\u003eAudio News\u003c\/li\u003e\n\u003cli\u003e\"The Virtual Crossover, Pt. 1\u003c\/li\u003e\n\u003cli\u003e\"A Hybrid Tube\/MOSFET SE Amp\"\u003c\/li\u003e\n\u003cli\u003e\"A Transient-Perfect Second-Order Passive Crossover\"\u003c\/li\u003e\n\u003cli\u003e\"A 211 SE Triode Amp\"\u003c\/li\u003e\n\u003cli\u003e\"Inductor Coupling\"\u003c\/li\u003e\n\u003cli\u003e\"Exploring the DAC Chip World\"\u003c\/li\u003e\n\u003cli\u003e\"Ribbons Made Easy\"\u003c\/li\u003e\n\u003cli\u003eProduct Review: Low Down Power, Pt. 1\u003c\/li\u003e\n\u003cli\u003eProduct Review: MJ Magazine's LP Test Disk 3\u003c\/li\u003e\n\u003cli\u003eXpress Mail\u003c\/li\u003e\n\u003cli\u003eNew Chips on the Block\u003c\/li\u003e\n\u003cli\u003eBook Review: National Semiconductor Audio\/Radio Handbook\u003c\/li\u003e\n\u003cli\u003eGlass Shard: \"Another Subminiature Preamp\"\u003c\/li\u003e\n\u003cli\u003eTest Tracks\u003c\/li\u003e\n\u003cli\u003eYard Sale\u003c\/li\u003e\n\u003cli\u003eVintage Glass: \"Marantz Preamp-Equalizer\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\u003c\/p\u003e","brand":"CC-Webshop","offers":[{"title":"Default Title","offer_id":43858987909334,"sku":"","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-05-2001.jpg?v=1670023007"},{"product_id":"audioxpress-may-2002-pdf","title":"audioXpress May 2002 PDF","description":"\u003cul\u003e\n\u003cli\u003eSpecial: \"What One Wants\", an Appreciation of Henry Kloss\u003c\/li\u003e\n\u003cli\u003e\"THOR: A D'Appolito Transmission Line\"\u003c\/li\u003e\n\u003cli\u003e\"The All-FET Line Amp\"\u003c\/li\u003e\n\u003cli\u003e\"A Practical Circlotron You Can Build\"\u003c\/li\u003e\n\u003cli\u003e\"The Infinite Box: Constructing a Subwoofer, Pt 2\"\u003c\/li\u003e\n\u003cli\u003e\"A Sensible McIntosh 225 Refurbish\"\u003c\/li\u003e\n\u003cli\u003e\"Moving-Coil Phono Cartridge Transformers\"\u003c\/li\u003e\n\u003cli\u003eProduct Review: GW Labs DSP\u003c\/li\u003e\n\u003cli\u003eXpress Mail\u003c\/li\u003e\n\u003cli\u003eClassifieds\u003c\/li\u003e\n\u003cli\u003eAd Index\u003c\/li\u003e\n\u003cli\u003eYard Sale\u003c\/li\u003e\n\u003cli\u003eWebsite Resources\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/em\u003e\u003c\/p\u003e","brand":"CC-Webshop","offers":[{"title":"Default Title","offer_id":43871084478678,"sku":"","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/AX-05-May-2002.jpg?v=1670457257"},{"product_id":"audioxpress-may-2023-pdf","title":"audioXpress May 2023 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e\u003c\/b\u003e\u003cb\u003eVolume 54\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eIssue 5\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eMay 2023\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eFROM THE EDITOR’S DESK—Make It Worth It, by J. Martins, p. 4\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eThe Hypex NCORE NCx500 Amplifier Module: Doubling Down on a Flagship, by Stuart Yaniger, p. 8\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eLearning Audio Testing and Measurements, by Jan Didden, p. 18\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eThe Vanderveen Trans PP80 Valve Amplifier, by Menno van der Veen, p. 20\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eA (Z)OTL with 300Bs: Part 1 — The Makeover, by Thomas Perazella, p. 30\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eMyths in Tube Circuit Designs, by Peter Dieleman, p. 38\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eVintage Op-Amp Noise Simulation: Part 2 — Calculations and Noise Sources, by Burkhard Vogel, p. 44\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eMonoblock Power Amplifier with Precision Bias Control: Part 2 — Circuitry, Mechanical Design, and Measurements, by Bruce E. Gillingham, p. 50\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003ePower Transformer Parameters, Selection, and Testing: Part 7 — A Few Transformer Core Types and Their Advantages and Disadvantages, by Chuck Hansen, p. 59\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eHOLLOW-STATE ELECTRONICS—A Trip Down Memory Lane: Electric Guitar Amps, by Richard Honeycutt, p. 63\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e (A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":44133395595478,"sku":"AX-FI-2023-5","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/products\/aX-052023-May.jpg?v=1681239855"},{"product_id":"audioxpress-may-2024-pdf","title":"audioXpress May 2024 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e\u003c\/b\u003e\u003cb\u003eVolume 55\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eIssue 5\u003cbr data-mce-fragment=\"1\"\u003eMay 2024\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eFROM THE EDITOR’S DESK—No Truth. Just Joy, by J. Martins, p. 4\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eThe TubeSociety 2022 OTL Hybrid Tube Amplifier, by Menno van der Veen, p. 8\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eA Low-Feedback Triode Amplifier with Zero Output Impedance: Part 1—Introduction and Single-Ended Input Amplifier Design, by Tim Mellow and Pater Farrow, p. 16\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eTube Output Power: Determining Output Transformer Impedance for Maximum Output Power, by Rudolf Moers, p. 22\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eOptimizing Single-State Dual-Triode Totem Pole Drivers, by Christopher Paul, p. 20\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eSOUND CONTROL—Sustainable Acoustical Absorption, by Richard Honeycutt, p. 40\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003ePure Acourate Sound Project: Greater Than the Sum of Its Parts, by Rens Tellers and Jan Didden, p. 46\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eThe Neurochrome Story, by Tom Christiansen, p. 52\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eThe Open-Loop Complementary Follower and an Amplifying Stage, by Dimitri Danyuk, p. 56\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"departmentsitem\" style=\"margin: 0in; margin-bottom: .0001pt; mso-add-space: auto; text-indent: 0in; line-height: normal;\"\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; font-family: 'Verdana',sans-serif; color: windowtext; font-weight: normal;\"\u003eA High-Performance 60-Watt Class A Amplifier: Part 2 —The Power Supply and Measurements, by Andrew C. Russell, p. 60\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\" data-mce-style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":45490364186838,"sku":"AX-FI-2024-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/files\/aX-052024-May.jpg?v=1714658103"},{"product_id":"audioxpress-may-2025-pdf","title":"audioXpress May 2025 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003e\u003c\/b\u003e\u003cb\u003eIssue 5\u003cbr\u003eMay 2025\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cul\u003e\n\u003cli\u003eFROM THE EDITOR’S DESK—Learn About the Music You Like, by J. Martins, p. 4\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e78 rpm Returns, by Michael Harkins, p. 8\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Ultra-Linear Power Amplifier: An Adventure Between Triode and Pentode, by Rudolf Moers, p. 16\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGetting Less Gain from Tubes, by Merlin Blencowe, p. 28\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMicro Details in Push-Pull Output Transformers, by Hans Polak, p. 30\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType 3 Mu Stage Breakthrough, by Alan Kimmel, p. 37\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrototyping Alan Kimmel’s Mu3 Stage, by Kim Bond, p. 41\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAnomalies V2: Leaving the Trodden Speaker Path, by Ben (Wolf) Shaffer, p. 44\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoffee Can Towers, by Ken Bird, p. 50\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eA Primer on Class-D Amplifiers: Part 2—Practical Implementations, by Paul Marchese, p. 57\u003cbr\u003eHOLLOW-STATE ELECTRONICS—Do It Yourself with Tubes, by Richard Honeycutt, p. 62\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/span\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":46725673418966,"sku":"AX-FI-2025-05","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/files\/aX-052025-MayWEB.jpg?v=1744352592"},{"product_id":"audioxpress-may-2026-pdf","title":"audioXpress May 2026 PDF","description":"\u003cdiv class=\"product-primary\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eIssue 5\u003cbr\u003e\u003c\/b\u003e\u003cb\u003eMay 2026\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qsc-html-content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFROM THE EDITOR’S DESK—Hear No Evil, by J. Martins, p. 4\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigning the Dynaco ST-70 Series 3 Vacuum Tube Audio Power Amplifier, by Dan Fraser, p. 8\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe Yin \u0026amp; Yang Circuit, by Geert Oyen, p. 14\u003cbr\u003eStabilizing Tube Feedback Amplifiers Without Much Math: Part 1—Diagnostic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrinciples, by Merlin Blencowe, p. 22\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRediscovering the EF184: A Surprising MM RIAA Preamplifier, by Zoran Dukick, p. 30\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuilding a KT170 Class-A Amplifier, by James Skov, p. 36\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThoughts on Igor Popovich’s Audiophile Vacuum Tube Amplifiers Books, by Mark Driedger, p. 44\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRevisiting an Elegant Idea: The Augmented Follower, by Dimitri Danyuk, p. 48\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNew Expressions for First-Order Filter Phase Response and Group Delay: Part 2—Deriving Responses and Group Delays, by Barak Shpiez, p. 54\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHOLLOW-STATE ELECTRONICS—Hermon Hosmer Scott: A Visionary, Engineer, and Entrepreneur, by Richard Honeycutt, p.63\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e(A link for downloading the magazine issue PDF is sent immediately following payment. Please be sure to use a valid email address.)\u003c\/span\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"audioXpress","offers":[{"title":"Default Title","offer_id":48105653567702,"sku":"AX-FI-2026-5","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/files\/aX-052026-MayWEB_d2f0b39e-fa9b-4674-a646-f101b5f4ae95.jpg?v=1776156771"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/5013\/7974\/collections\/aX-052026-MayWEB_d2f0b39e-fa9b-4674-a646-f101b5f4ae95.jpg?v=1776885891","url":"https:\/\/cc-webshop.com\/collections\/audioxpress-glass-audio-editions.oembed","provider":"CC-Webshop","version":"1.0","type":"link"}