ATTN: In the coming weeks there will be extended periods of downtime to upgrade our server. I will try to limit the extended downtime days to Saturdays when traffic is lowest, but overall service may be spotty.
I've now had a chance to look at the Vox Cooltron pedals.... there is no trick to it.It is a grounded cathode 12AU7 with the triodes paralleled and an opamp servo providing a voltage to the grids for bias.
(The ideal thing would be to design a smaller more efficient heater-cathode system, but nobody is designing new tubes today.)
That'a what I call "pending"
Started by StephenGiles
Started by Vikki
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Started by kambo