Accuphase A-48 - Stereo Power Amplifier

Continuous Average Output Power (20–20,000 Hz):

Stereo operation (both channels driven) - 360 watts per channel into 1 ohm, 180 watts per channel into 2 ohms, 90 watts per channel into 4 ohms, 45 watts per channel into 8 ohms. Monophonic operation (bridged connection) - 720 watts into 2 ohms, 360 watts into 4 ohms, 180 watts into 8 ohms.

Total Harmonic Distortion:

Stereo operation (both channels driven) - 0.05% with 2 ohm load, 0.03% with 4 to 16 ohm load. Monophonic operation (bridged connection) - 0.05% with 4 to 16 ohm load

Intermodulation Distortion:

0.01%

Frequency Response:

At rated output: 20 – 20,000 Hz +0, -0.2 dB. At 1 watt output: 0.5 – 160,000 Hz +0, -3.0 dB

Gain:

28.0 dB (with GAIN selector at MAX) (Stereo and monophonic operation)

Gain Selection:

MAX, -3 dB, -6 dB, -12 dB

Output Load impedance:

Stereo operation - 2 to 16 ohms. Monophonic operation: 4 to 16 ohms

Damping Factor:

800

Input Impedance:

Balanced - 40 kilohms. Line - 20 kilohms

Signal-to-Noise Ratio (A-weighted, input shorted):

117 dB (GAIN selector at MAX), 122 dB (GAIN selector at -12 dB) At rated continuous average output

Output Level Meters:

-60 dB to +3 dB (indication in dB and %) Logarithmic scale. Operation selector: OFF / NORMAL / HOLD (∞). Meter sensitivity selector (-20 dB). ＊Monophonic operation: same value displayed for left/right.

Power Requirements:

AC 120 V/230 V, 50/60 Hz (Voltage as indicated on rear panel)

Power Consumption:

180 watts idle. 427 watts in accordance with IEC 60065

Maximum Dimensions:

Width 465 mm, Height 211 mm, Depth 464 mm

Mass:

33.0 kg net, 40.0 kg in shipping carton