I’ve been thinking of giving the BA-3 as preamp a whirl, but would like to do it with the parts and chassis I have on hand. What I’m thinking is fitting the preamp board into a smallish galaxy chassis (currently housing a B1) and, for now, getting my power from two meanwell 24v desktop supplies. Might do an RC round in the chassis too. If I decide to stick with it, would then build a proper external supply. Any advice/warnings concerning this approach?
I ran my Pearl 2 like that for years, as long as it's getting a clean +-24V it shouldn't matter how you do it.
Nice! Out of curiosity, did you see an improvement with Pearl when you switched to a linear supply?
I went from 2 industrial regulated supplies to the stock one, so theoretically it was a step down. I didn't notice a difference, as the Pearl does its own regulation and filtering.
Anybody know if a trusted source for 2SJ313‘s and 2SK2013’s? I’ve seen a few listings on eBay, but unfamiliar with the sellers
DIYAudio user "NicMac" used to sell them. But I think his supply is gone now.
I would just use Fairchilds.
I have a bunch of the Toshibas, but I haven't matched them yet. I'm pretty sure @prakit still has them for sale....
The first post of this thread has it.
Edit - I don't see the VA rating there but the BOM I have specifies 50VA.
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Are you referring to the BA-3 amplifier? This is for the BA-3 front-end preamp.