Hybrid Headphone Amplifier, 2x ECC88
- Output stage - NPN BD139 or equivalents
- Driver tube - ECC88, 6N23P or equivalents
- Compatible enclosure - AmpBox C100-A
- Topology - SRPP driver and pure Class A output stage
- Power consumption - 25W
- Power supply - 2x6.3VAC @ 400mA, 40VAC @ 400mA
- Headphone impedance - 32 to 120 Ohm
- Output - 0.5W @ 56 Ohm
- Board - 2-layers PCB, 150×110 mm
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Headphone Hybrid Amplifier 2x ECC88
Published on 09 November, 2026