retro-thermionic - tube preamplifier with Psvane Sphere
Aspire” - Based on a preloved Psvane 6SN7, which tested very good and chassis and tranni I’d had for some time this single stage preamp emerged. Add to the parts complement remote control Alps blue velvet pot, Hammond power tranni and quality Mylar output caps and you have one very nice tube preamp. Rectification is by 1A diodes and filtering is quad Pi with 347uf total. The preamp is quiet. The chassis is earthed and fused. Diodes and filter caps are bypassed and the NP cathode bypass caps ar