Rizlaw
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After additional relatively brief testing, it seems that the CSP3 is not well suited for 6SN7s with adapters. I noticed some mighty sparks inside my two 6N1P output tubes turning the CSP3 on or off with the 6SN7 in the input tube socket. This also resulted in some pretty loud and scary electrical cracks through the headphones. Shortly, after this happened, I received an email response from Woo Audio stating they don't recommend using 6SN7s with adapters in their WA2 OTL headphone amps.
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