parasound 3500 verses parasond jc1

Steve, sorry but suggest you measure it........We did and found a ton of 2nd.........Glad you and your customers like the brightness this imparts on the sound as it saves $5 or so in parts for the revisions along with maybe ten minutes of work........Really glad you fixed the horrible problems in HF extension and dynamics in the JC-1s and suggest that once your amp is out you send it here so that we can criticize it and perhaps offer mods to fix the problems as we see them.............Sorry, but without changing the emitter resistors the 3500 will never be pristine and you will have the same problems we did as you'll run out of heatsink before you get it pristine.......

Bob Crump
CTC Builders

interesting!

Bob - thanks much for the tips. I will definitely try the Harris part on the next one that I mod.

BTW - I decided to replace all of the bias pots with sealed Bournes units in the 3500 and eventually, the JC-1's to avoid creeping bias and future warranty problems. Also made some other changes to minimize warranty issues. I appreciate your "war-stories" on this.