Are there any substitutes for the 6s4a? I've been looking and asking around a bit, but I haven't found anything. I'm mostly just curious, since it seems like you can get a ton 6s4a tubes off ebay for cheap.
Also, is it correct that getting a matched quad is unnecessary since the amp is ccs? If that's true, then its ok to mix brands, since they should all be made to the same specifications, right?
Btw, if these are dumb questions and/or my statements are inaccurate, sorry, this would be my first project so I'm still in the learning phase
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