AHHA-M1
Aikido Headphone Hybrid Amplifier
ECC86 Thermionic Valves:
Circuit diagram:
PCB:
This is two sided board designed with heavy groundplanes on both sides.
It is made of FR-4 fiberglass material with Cu-50 mikron + Pb track overlay (tinplated), drilled, with two sided soldermask, and with white component overlay.
PCB comes with the partlist, stuffing guide and circuit diagram.
- AHHA-M1 circuit is based on J.Broskie Tubecad article blog0067:
Tubecad blog0067 - J.Broskie article download link.
- PCB is designed as dual mono construction - there are two completely separate channels on single PCB.
- This board could also be used in fully balanced operation, in this case two boards are required, one per each balanced channel.
- All Tubes are DC heated, and each Tube heater have it's own low noise voltage regulator.
- IC1, IC2, IC3, IC4, IC7, IC8 must be electrically isolated from the heatsinks.
- Designed for Tubes: ECC86, 6GM8, 6N27P.
PCB size is 167 mm x 147 mm ….. ( 6,57 in x 5,78 in )
Professional made printed circuit boards are available :
1 Pcb. ….. Euro 39.00
2 Pcb. ….. Euro 74.00
( Worldwide shipping included )
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