THE MIGHTY FLEA BATTERY GUITAR AMP

Back in 2017, I designed “The Mighty Flea” – a 20W battery guitar amplifier aimed mostly at acoustic jazz guitarists, and built a couple of prototypes. I used to go to gypsy jazz festivals a lot, and I thought it…
Back in 2017, I designed “The Mighty Flea” – a 20W battery guitar amplifier aimed mostly at acoustic jazz guitarists, and built a couple of prototypes. I used to go to gypsy jazz festivals a lot, and I thought it…
MASSCOT stands for Massive Analogue Sound Shaper – Compressor, Overdrive, Tone. It’s a guitar preamp, overdrive, optical compressor and EQ that creates a full, warm sound, as you will only get with top quality analogue circuitry. At the heart of…
This lovely analogue mixing console, a Soundtracs PC-MIDI 24 track, was fully restored, and then purchased by a well known Electronic Dance Music producer based in Amsterdam. An audio mixing console like this can be a great value investment for…
To work on audio electronics, you need some audio test equipment. In this article I discuss what you need and how much you need to spend on it. This audio test bench served me really well, and I still use…
A friend asked me to fix his ART MPA Gold Dual Mic Preamp. It’s really nice to be able to dish out a fat spoonful of audio-praise to ART, who were ultra-helpful in helping me get this repair done. The…
I was recently contacted by the owner of a local studio who had two high end mic preamps (Universal Audio 4110, and Millennia HV-3D), both of which had developed noisy channels. In both cases the channel in question was producing…
UPDATE Because of the number of issues I have seen with the KEF PSW2000 subwoofer, I am no longer accepting repair jobs on them. The mechanical construction makes them awkward to work on, and they seem to have just too…
The Dynacord “Eminent” is a nice old German made valve amplifier that I was asked to restore. It was originally designed as a small mono PA. It has two instrument and two mic inputs, simple bass and treble tone controls,…
This mixer power supply belongs to a Soundcraft Delta 200 desk which I restored. It is pretty old. On first inspection the output voltages were correct, the only problem was that the mains transformer made an annoying buzzing sound. Looking…
This is a very simple project that takes only a few hours to make. It is a pair of 8 ohm resistive loads which can be used to test a mono or stereo power amplifier. If you have ever wondered…