440a

1961 custom electra iv. preamp has most likely a cap that needs replacement. i've pulled the amp and i've pulled the knobs and have taken the screws out that holds the preamp in. i can see a metal brace that holds the preamp in and so it has to be pulled straight up and out. but, this top...

see full album here. http://imgur.com/a/zGgTq What pieces am I missing? I started with the 530T and 440A, and I wanted a representative piece for this entire line of products. Specifically, the same 3U form factor with the flip power switch. There are other variants like the 410A and 610D...

Anybody know if it is possible (and worth the effort) to swap the single bias pot for four individual pots on a console amp like the 440A? I have such an amp running as a stand-alone and I think having the ability to adjust the tube bias individual would be a nice feature. I know this topic has...

I just acquired a Fisher 440A (no pre-amp). I plan to use this as a stand-alone and is my first tube project. I have powered it up, plugged in a ipod & speakers and it works (kind of). There is a fair amount of hum and I can only play it at very low volume levels - anything higher and there is...