Power supply upgrades

Enjoy your music!!

Increase your filter capacitance, and replace your rectifiers with FREDs. I've done the former in the past(in tube amps) with excellent results. That's one of the first things most tube amp modders address, as it will improve the amp's bottom end performance and, overall, make everything sound more effortless. I just did the latter in both my SS woofer amp, and two Cary monoblocks. The results/improvements are too numerous to list, but the dynamics, slam and resolution you are seeking will be presented "in spades". I used a pair of IXYS VBE 17-06NO7 in my SS amp, and six IXYS DSEI 12-10A each in my Carys. Those are easily obtained from Digi-Key. How I wish that Black Gate was still manufacturing their large filter caps, or that Sanyo had OS-CONs big enough for amplifier power supplies. Al's filter cap/film cap bypass suggestion will also yield improvments. OOPS- I also recently upgraded the power supply in my TacT pre-amp, using FREDs and OS-CONs. Made a whole new beast out of it. I got carried away, talking about the power amp mods. SORRY! =8^) The tubes you choose will make a dramatic difference in your presentation also. Regarding the resistors: See if any of Caddock's will work in your app: (http://www.caddock.com/Online_catalog/Mrktg_Lit/TypeMK.pdf) Read the bottom of the data sheet.

If he could find some Black Gates to directly replace the caps he has, there would definitely be an improvement with regards to dynamics. Some of their old suppliers still have the smaller values in stock, although at a premium. Upgrading to Black Gates, or Sanyo OS-CONs will improve dynamics installed in any circuit that provides gain. I believe he could easily find them for his phono pre. If the pre has rectifiers, replacing them with soft recovery FREDs will yield even greater benefits. These things just hold true, regardless of the power supply's application.

Sns- I agree completely with Al about not replacing caps with anything of a lower voltage rating. Your RS804 can be replaced with an IXYS FBE 22-06N1. The Phono One seems to have a spacious chassis. I would think you'd be able to accomodate four IXYS DSEI 12's(TO-220 package) or one VBE 26-12NO7 without a problem, to replace the BR310, and run wires. I promise: The benefits will far outweight the effort.