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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 54.00

2 Pcb. .. Euro 89.00

 

( Worldwide shipping included )

 

 

 


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