Mikirob,
As much as I loved the HK C-I that Don fully modded for me, Don Sach's new preamp is much much better and much more simple in design. The heart of the preamp is the octal tubes. It is an unfathomably fine preamp, better than anything I have heard, and Don shared that view. He sells his preamp for about $1800 with a fine custom-made wood base, which allows easy tube rolling. Don is now also selling a KT88-based amp that, in his view, betters the HK-CII, an amp he also fully modded for me. Don has worked on hundreds of tube amps and preamps and has both a great technical background, but also a very acute pair of ears. In 45 years of having good gear, Don's new preamp is the finest piece of gear I have ever heard. If you have great vintage tube gear in need of an rehab, Don can do wonders with it. BTW, Don is the only guy recommended by Jim McShane and nobody has more credibility than Jim McShane in the tube audio space. Cheers, Mark
As much as I loved the HK C-I that Don fully modded for me, Don Sach's new preamp is much much better and much more simple in design. The heart of the preamp is the octal tubes. It is an unfathomably fine preamp, better than anything I have heard, and Don shared that view. He sells his preamp for about $1800 with a fine custom-made wood base, which allows easy tube rolling. Don is now also selling a KT88-based amp that, in his view, betters the HK-CII, an amp he also fully modded for me. Don has worked on hundreds of tube amps and preamps and has both a great technical background, but also a very acute pair of ears. In 45 years of having good gear, Don's new preamp is the finest piece of gear I have ever heard. If you have great vintage tube gear in need of an rehab, Don can do wonders with it. BTW, Don is the only guy recommended by Jim McShane and nobody has more credibility than Jim McShane in the tube audio space. Cheers, Mark