I got for sale, one of the best solid state preamplifiers on DIY market. It was designed by Pavel Macura and it uses matched SK 170 JFETs at the input with bipolar transistors on output, which operate in deeply class A mode. Preamplifer has very low output impedance and can drive any power amplifier or headphones on the market with ease. The gain is easily selectable from 1 to 5x (my version has 2x). In my version all jfets are strictly matched by P. Macura and I use best components like Panasonic FC, FM and Nichicon Fine Gold capacitors. Recommended Alps pot is also already mounted. Both compoonents were tested and are in perfectly working condition.
I can sell just separate PRE4 board or together with matching PSU.
Link:
http://web.telecom.cz/macura/pre4_en.htmPrice for set (PRE4 + PSU) is 225 EUR + post cost
Email: moonaudio (at) gmail.com
