Accuphase A-20 Pure Class A Stereo Power Amplifier 

AC100~240V From Japan

Description

The Accuphase A-20 is a stereo power amplifier distinguished by the smooth, natural sound quality of its pure Class A operation. Combining delicate expressive capability, a rich soundstage, and excellent driving power, it brings out the true appeal of the music. Rated Continuous Average Output (20Hz–20kHz) Stereo Operation (both channels driven simultaneously)
2Ω: 80W/ch
4Ω: 40W/ch
8Ω: 20W/ch
Monaural Operation (bridged connection)
4Ω: 160W
8Ω: 80W
Total Harmonic Distortion Stereo Operation (both channels driven simultaneously)
2Ω: 0.05%
4–16Ω: 0.02%
Monaural Operation (bridged connection)
4–16Ω: 0.02%
IM Distortion 0.003%
Frequency Response 20Hz–20,000Hz, +0/-0.2dB (at rated continuous output)
0.5Hz–160,000Hz, +0/-3.0dB (at 1W output)
Gain 28.0dB (with GAIN switch at MAX)
(for both stereo and monaural operation)
Load Impedance Stereo Operation: 2–16Ω
Monaural Operation: 4–16Ω
Damping Factor Stereo Operation: 120
Monaural Operation: 60
Input Sensitivity (8Ω load) Stereo Operation
0.50V (at rated continuous average output)
0.11V (at 1W output)
Monaural Operation
1.00V (at rated continuous average output)
0.11V (at 1W output)
Input Impedance Balanced: 40kΩ
Unbalanced: 20kΩ
S/N Ratio (A-weighted) 110dB (input shorted, at rated continuous average output)
Power Meter Level Logarithmic compression type
NORMAL : -40dB to +5dB and direct-reading output scale
-20dB -60 dB to -15 dB and direct-reading output scale
Power supply AC 100 V, 50 Hz/60 Hz
Power consumption No signal input: 160 W
Electrical Appliance and Material Control Law rating: 250 W
At 8Ω rated output: 180 W
Dimensions 475 (W) x 170 (H) x 427 (D) mm
Weight 21.6 kg

Accessories: Cable only