Dating deluxe reverb amp
The Custom Deluxe has a bassman voiced channel and also has its bright cap removed on the other channel which is otherwise voiced like the blackface Deluxe reissue. The Silverface Custom Deluxe and Princeton models use the same PCBs as their sister Blackface Reissue models but with some tweaks. It appears there is not much interest in this amp by folks on this forum. As hallpass noted, it's not all that different than a standard Deluxe Reverb. Here is a copy/paste from another board with my thoughts (you can also read the rest of the thread): That was my experience too. I tried asking on the Fender forum since other people had started threads about the noise but I got unhelpful "I don't have that problem" and "Too bad all these people are having these problems and tarnishing the name of Fender". There was interest by me: I owned and returned one.
They have reduced negative feedback for a tad less clean headroom, which can translate as warmer at lower volumes or slightly more distorted at higher volumes. The funny thing is, the sound was fantastic, but there was a massive buzz—likely bad lead dress or crappy filter caps. As hallpass noted, it's not all that different than a standard Deluxe Reverb. Here is a copy/paste from another board with my thoughts (you can also read the rest of the thread): TL; DR: sounds great, build quality is spotty, if you get a good working one new with 5 year warranty, it would serve you well.
It gave good support to the low notes -- always a problem with humbuckers and BF circuits.
At 12 watts headroom would certainly be an issue though.
While I really like this amp, when it's working, if I could do it all over, I would go with the Princeton Reverb. It has that beautiful tube tone that fills the room with warmth.
They both use the same component board, and the 'Bassman'-channel only differs in tone cap values and probably a different value slope resistor. The schematic and layout for the 68 custom series are not on the Fender support website yet, but the 65 ri uses the same board, so you could use that schematic (- amplifier schematics).
I can easily do that myself, but if you don't feel comfortable doing so, I can imagine paying a proper tech to do it could turn out too costly. But it's absolutely reversible and with proper solder skills absolutely unnoticeable, so selling it should not be a problem if you still don't like it after the changes. It's R64, an 820R resistor in the ab763 configuration, it's probably much higher in the 68, replace it by an 820/1W.
I already have the amps that I want but I kind of like to know what is out there. I built a Mojotone DR clone and also have an Evans RE200, and like both. It has that beautiful tube tone that fills the room with warmth.
The recent Kemper thread makes it look as though amps and pedals may be going the slowly way of the dinosaur. The technology will get better but there is room for everything IMO. The problem is that it's at the amp tech right now for the second time in under a year. I tried the 65 RI first and found it to be too bright for my taste.