You can buy a set of two kx2-amplifier boards and a basic power supply board Jim’s Audio here :- kx2-Amplifier PCB Set The kx2-Amplifier (hereinafter just called the ‘kx2’) takes the original kx-Amplifier released in 2018 and irons out some…
The X-Altra MC/MM RIAA Phono EQ article Part 1 and Part 2 were published in the 2021 February and March issues of audioXpress magazine. You can download a copy of both Part 1 and Part 2 from the audioXpress website…
Are you are looking for an experienced solid state audio designer? I am UK based but can undertake design projects on a contract basis for customers anywhere in the world. I specialize in power amplifiers, full feature pre-amplifiers (including low…
This simple, low cost speaker protection board uses the ubiquitous UPC1237 from Unisonic, a Taiwan based semiconductor manufacturer. The circuit will work from 25V through to 75V and uses mosfets to switch the speaker load rather than relays which are…
Here is a low noise general purpose linear power supply that can be used to power the HPA-1 Headphone amplifier or any other low noise small signal application. The Hifisonix Standard PSU features low noise, up to 400mA per rail…
Here’s a 9 minute YouTube video I made on soldering SMD components. I use lead 0.5 mm solder with a melting temperature of c. 180 C and my soldering iron temperature is set to 280 C.
The QA 401 from QuantAsylum (now superseded by a newer, improved QA 402) has emerged as a popular, comprehensive audio test instrument in the DIY audio fraternity and the go to instrument in many cases for commercial production testing in…
