JC-2 Preamplifier Clone Class A Dual Differential FET

This JC-2 clone was assembled using matched transistor pairs, Dale resistors, silver teflon wire, good quality rca connectors, Alps volume pot. Preamp has 2 pairs of switchable inputs and a pair of outputs.

All voltages and operating points (bias, dc offset) adjusted and stable.

This preamp has excellent sound, dynamics, no detectable noise, hiss or hum at max volumes, absolutely "black" background.

Having owned various SS preamps I have to say that the performance of this preamp is superior to any of Adcoms, Yamahas, Denons or any other OpAmp based preamps.

Reviews:

"Hi Don, I bought this preamp from you almost 3 years ago, and until now have only used it as a backup in secondary systems. This week due to some system changes, I have used it daily in a very good system, and am extremely pleased that it is so good. Thanks, Joe"

"I love your little JC-2 preamps. They are very transparent and uncolored. I am looking for one more (in case you have another one or similar piece you might want to sell). I just need a tad more volume gain in one system (my DAC has volume control but needs about 5-6 more db gain). If you find something sitting around that you wish to sell...run it by me...thanks again sir."

"Great sounding preamp! Clean, accurate, dead quiet. Thanks so much."

About Abacus Music:

I have been building audio equipment and selling it on Audiogon for many years now with hundreds of pieces built and sold. I build every piece as if for myself, using only highest quality parts and materials. I listen to every component in my system for days before deciding to put it up for sale.
I hold degrees in Electrical Engineering, Musicology, and M. M. in Performance.

Shipping - $15.00 within CONUS