audioXpress May 2019 PDF

Volume 50
Issue 5
May 2019

FROM THE EDITOR’S DESK—More Tubes, More Sourcing Options, by J. Martins, p. 4
SOUND CONTROL—Miking Instruments: A Few Techniques, by Richard Honeycutt, p. 8
The Nu:Tekt HA-K1 “Tube” Headphone Amplifier by Korg/NuTube: Power, Psychology, and Distortion, by Erik Owen, p. 16
Restoration and Revival of the McIntosh MC30 (Part 1): Rebuilding the MC30, by Bruce Brown, p. 24
A Second Life for a Vintage Tube Amplifier, by Mark Driedger, p. 32
Build a Budget-Friendly High-Performance Valve Headphone Amplifier, by Bruce Heran, p. 36
Desktop Vacuum Tube Headphone Amplifier, by Bill Reeve, p. 40
An Outrageous Mu Stage: An Update of My 1993 Mu Stage Design, by Alan Kimmel, p. 42
QUESTIONS & ANSWERS—Experimentation Opened a Realm of Possibilities: Interview with Shannon Parks, Founder of Parks Audio, by Shannon Becker, p. 46
Searching for a Unicorn (Part 1): Measuring Voltage Regulator Ripple Rejection, by Brian Lowe, p. 52
HOLLOW-STATE ELECTRONICS—Square-Wave Testing, by Richard Honeycutt, p. 58
ARTICLE UPDATE—Corrections to the “Noise in Vacuum Tube Circuits” Article, by Richard Honeycutt, p. 64

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