http://www.firstwatt.com/f1j.htmlFor sale is the most excellent First Watt F1J current source amp, serial #44 of 100. These were all hand built by the master Nelson Pass himself. It is under transferrable warranty until August 2020
This is an updated version of the F1 amp, which dropped in some JFETs to significantly improve performance. For those looking for ultimate transparency, this is a *no feedback* and *one gain stage*, for the purest, simplest form of amplification possible (see Nelson Pass's excellent F1 manual, and white paper on current-source amplification):
http://www.firstwatt.com/f1.htmlhttp://www.firstwatt.com/pdf/art_cs_amps.pdfAmp comes in original box, with manual and invoice. Works like a champ. Some very small scratches on the top (see photos) but in very good condition.
Buyer pays PP fees and shipping (CONUS only please). Happy to meet folks in San Diego to deliver in person (cash for in person delivery please)
