Converting Solid State to Tube Rectification on a Preamp

you may gain some degree of reliability with tubes powered up softer than with typical bridge rectifier, but the pulsation will be with larger amplitude... imho going from half-wave rectifier to full-wave rectifier not going to be beneficial.

@salectric

I might be lost in translations, but full-wave bridge superposes 4x(as signal is phase split by 180deg) half-waves thus pulsation is substantially smoother than to the conventional full-wave method or tube rectification. Literally saying that you’re dealing with 4 superposed half-waves as opposed to 2 superposed half-waves.

Pulsation of bridge is nearly 4 times lower in magnitude and closer to the perfect DC.

...so you need to check all 4 tubes in tube rectifier bridge if operational?

So, it can be done, the question is why you want to do that!

Well, if it's to me, than perhaps I can assume some degree of masochism as tubes get blown over 10 times faster than diode.

 I think the best bridge approach with vacuum tubes can actually be done with 2 triodes as each triode can be represented with equivalent 2 diodes.

To my experience upgrading current rectifier with better parts is quicker, smarter and cheaper approach with larger outcome. Just modifying for tube rectifier seems to be more like spiritual masturbation.

Tube rectifier maybe more safe for especially power tubes as it rises up operational voltage substantially slower than semiconductor.

 In preamp you may be better off with solid state sonically. There are upgrades to SS rectifiers you can research for more quiet designs with higher quality semiconductors and for a lot less money. I've done in the past replacements of separate diodes by integrated low-noise bridge on tube power amplifier. It's available in Newark.com and look for proper parameters of Semicron bridge models specifically designed for tube electronics with high operating voltages. Also another cheap trick is to throw over the AC terminals Jensen film in oil cap of few thousand pf -- these you can get at partsconnexion.