The Hifisonix kx-Amplifier is a 28 Watt class A DIY Current Feedback (CFA) power amplifier featuring low distortion, wide bandwidth and fast rise/fall times. It can be operated either in pure class A mode, or in class AAB mode with…
Here is a quick look at some of the problems that can occur when the VAS (aka TIS) in an audio amplifier is driven into saturation without considering the effects of base charge storage – a phenomena all bipolar transistor…
Updated with new material 7th January 2019 This set of c. 50 slides is the culmination of my experience over a period of about 25 years building numerous power amplifiers and preamplifiers. I first started out in audio around 1975…
The latest PCB’s are gold plated, through hole plated and silk screened for just $11.99 (excl. shipping) and are available from Jim’s Audio here: Ripple Eater PSU for kx and sx Amplifiers Here is an Excel file with the…
Very High Quality Silk Screened PCB’s for this project are available from Jim’s Audio here:- Hifisonix RIAA Amplifier Here is a simple no-nonsense, accurate RIAA equalizer amp you can easily build. The design uses an all-active topology and is based…
