2. Six vacuum tube 12AX7 for first two stage common cathode amplification and final stage cathode follower, respectively for two channels.
3. Use of Solen/WIMA capacitors, Nichicon FW capacitors, Philips/BHC capacitors, and Dale resistors.
3. Dedicated power and ground rails for tube power and tube filaments.
4. Symmetry in layout design for both channels.
5. Power requirement: 110-115V AC/ 220-240V AC 50/60Hz