Cathode Biased tone?

[mdroberts1243]

Maybe a dumb question, but I see sooo many differing opinions, I'd like the Dumble forum to weigh in on this...

How much 'tone' is attributed to the fixed bias output stages I see on the Dumble schematics? What about cathode biased as an alternative? What should I expect to be different in the sound?

Thanks,

[Funkalicousgroove]

try it and see!

[mlp-mx6]

FYI - The Fuchs ODS 30W uses cathode bias.

[mdroberts1243]

try it and see!

I will be glad to do that, eventually. So far I've been building single-ended ultralinear amps and tube distortion pedals... I haven't yet got a push-pull platform to try it on. I'm gearing up for a PP build, and I think I've got a taste for the D'Lite design... but opinions and experience are quite appreciated well in advance!

Thanks,

[heisthl]

Cathode bias warms up the sound of normal Fender type amps but is not needed on clone builds. I had a switchable one one the first clone project that I later removed and I've never looked back. The tone is in the preamp - the output section should be as clean as possible. If you must try one here's a good switchable one to copy (Custom shop version of the Prosonic):
http://www.schematicheaven.com/fenderamps/prosonic.pdf

[mdroberts1243]

Cathode bias warms up the sound of normal Fender type amps but is not needed on clone builds. I had a switchable one one the first clone project that I later removed and I've never looked back. The tone is in the preamp - the output section should be as clean as possible. If you must try one here's a good switchable one to copy (Custom shop version of the Prosonic):
http://www.schematicheaven.com/fenderamps/prosonic.pdf

Thanks Heisthl,
One of the 'touted' benefits of cathode biased is improvement in touch sensitivity... did you notice any differences there?

[heisthl]

I've yet to build a HRM clone but the non-HRM is definitly not lacking in touch sensitivity. I would say that the stock Prosonic I have is slightly more touch resposive on that position, but the biggest benifit for that amp is the improved tone (sounds warmer).