1 vs Adcom GFA-5500
The GFA-5500's power @ 8ω is 200W against the 1's 85W, its damping factor >700 against >800, and its thd 0.020% against 0.090%. Both share signal-to-noise (100 dB).
AI-generated product photo — not official manufacturer imagery.
1
YBAAmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$449
Around — community and catalog average, updates slowly
About the 1
The YBA 1 Alpha HC is a high-end solid-state stereo power amplifier emphasizing minimal signal path components and robust current delivery. Designed by Yves-Bernard André, it features a dual-mono architecture with separate power supplies and 60,000µF total capacitance. The class Alpha design combines a class-A driver stage with class-A/B output for efficient operation while maintaining sonic purity. Notable for its ability to drive extremely low-impedance loads (1800W into 0.7Ω), it uses no series passive components in the signal path.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 85W @ 8Ω
- Power @ 4Ω
- 170W @ 4Ω
- Damping Factor
- >800
- Input Sensitivity
- 1.1V RMS
Analog Output
Analog signal output specifications
- THD
- 0.090%
- SNR
- 100 dB
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 430 × 132 × 330 mm (W × H × D)
- Weight
- 20.87 kg (46 lbs)
Key Specifications
Power: 85W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions