Built these several years ago. Always lived in my radial rack. Version 1 boards. Ed-Anderson 2503 Output transformers. Gar 2520 Op-Amps. The band-pass filter mod was done by removing C3 & C4 to just have 50 Hz HPF with filter engaged. No 15kHz LPF I have the extra caps if you want them to put back in to make band-pass again. Just disassembled and cleaned with 99% Isopropyl. Ready to ship. I have 2 available. $500.00 a piece $950.00 for both plus shipping.
