Archive issues for (PDFs) audioXpress has been serving up the best in DIY, electronics, and innovations in audio since ! With an increased focus on. Your one-stop shop to audioXpress and Circuit Cellar products. Keeping you up- to-date on trending developments in audio and embedded electronics. Title: Audioxpress Burson Opamp review, Author: Burson Audio, Name: Audioxpress Burson Opamp review, Length: 4 pages, Page: 1, Published.

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I also have written articles for AudioXpress magazine formerly Glass Audio on occasion. The A tube, and a push-pull A amplifier. I owned and operated Wheatfield Audio, which made tube headphone amps but no money! There’s no better way to pay tribute to Ron than revisit audioxprews of these projects. July 25, by Pete Millett. Class-A2 amp using a power opamp driver. The “Millett Hybrid” effort and others at HeadFi are examples and excellent models of how the DIY community should work, in my 2009.

There are some cases where products are being sold not only with my permission, but active involvement.

Pete Millett’s DIY Audio pages

Parts shopping in Asia sorry, getting a bit out of date. That said, I would appreciate it if you at least let me know if you are going to use any of the circuits or especially PCB Gerber files to make commercial products, or to sell bare PCB’s.

A compactron triple-triode driver for push-pull amps. Follow the links below for detailed info In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed.

I do sell things, including projects I no longer need, PC boards for my designs, and occasionally parts and tubes. The “” Push-Pull amp using driver boards below.


In ALL of these cases, I make no profit from any of the sales. October 17, by Ron Tipton.

audioXpress Supplementary Material | audioXpress

In auioxpress article, Ron Tipton explores the use of stroboscope discs to determine whether your turntable is set to the correct rotational speed. You can click here to see what I may be selling at the moment. Tube-regulated high-voltage bench power supply. This article was originally published in audioxpress, March High-voltage regulator “Maida” regulator that fits Landfall Systems heatsink.

Audioxpres completed the design and construction of an archival phono preamplifier, which provides variable equalization along with several other operational necessities for playing vintage records rpm discs, pre-RIAA LPs, lacquer transcription discs, and so on. EL push-pull single-stage “spud” amp experiment. ResCalca cool utility program you auudioxpress download that calculates combinations of standard resistors to get a particular value.

Tube amp power supply PCB with bias supply. The “Engineer’s Amplifier”an affordable, high-performance push-pull TV pentode amp. Please go to www. I do some commercial audio design work outside of my “day job”. Tektronix power transformer information – Info I’ve collected on classic tube-type Tektronix power transformers.

This info is provided with no guarantees as to accuracy, usefulness, etc. This article from respected author Ari Polisois deals with a single-ended amplifier with enough power to drive even the most difficult speaker systems – delivering 50W per channel. This article by Ron Tipton details the design and construction of the TDL Model high-performance microphone preamp, using a differential input stage that used compound transistor pairs with circuit resistance values, computer optimized for very low output noise.

Push-pull 6B4G class-A amplifier.

audioXpress Supplementary Material

The Audio Voice Newsletter. Ixys current regulator as a CCS plate load. A lifetime electronics geek, I got a ham radio license at the age of 8 and a first-class commercial radio license at This is a depository for various audio designs and projects – mostly tube – that I’ve put in the public domain, as well as additional info to support magazine articles that I’ve written, and an ever-growing amount of technical data archives relating to vintage and tube audio.


This article was originally published in audioXpress, February Muting relay PCB to eliminate the “thumps”. Most auduoxpress are hyper-linked to full-size pictures, so you can zoom in if you click on them.

I’ve been an electrical engineer for nearly thirty years, doing mostly computer and consumer electronics design work. October 31, by George Ntanavaras. In this project article for audioXpress, George Ntanavaras describes aufioxpress design and construction of a high-quality RIAA preamplifier for moving coil cartridges based on high-quality Analog Device AD op-amps designed for low-noise audio applications and driven from very low source impedance.

The author describes a microphone amplifier designed to interface a standard dynamic microphone to audkoxpress soundcard or other computer microphone input with a 5V through 2.

This article was published in audioXpress, April April 28, by Ari Polisois. I’m just old enough that I actually build and used tube some stuff audioxprses it was still in production.

Some files have compressed images that may not work correctly with older versions of Acrobat reader. This article was published in audioXpress, July Audioxppress 21, by Ron Tipton. I do this through eBay – I maintain an eBay store “pmillett”. I’m currently living near Fort Collins, Colorado, and work for a Silicon Valley semiconductor company.

Wheatfield Audio HA-1 tube headphone amp.