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Accuphase Laboratory, Inc.

Accuphase A48S Class A Stereo Power Amplifier

Accuphase Laboratory, Inc. Japan have requested for us not to sell their premium products on line. 

Price & Demonstration are available on request.

☎ 01925 828009📧 sales@dougbradyhifi.com
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The Accuphase A-48S incorporates state-of-the-art technologies to create a Class A power amplifier that delivers superb performance. Benefitting from years of ideal designs of high-performance units, the A-48S utilizes 6-parallel pull-push power MOS-FETs and boasts an output of 50 W into 8 ohms, 100 W into 4 ohms, 200 W into 2 ohms, and 400 W into 1 ohm at the same size as conventional models. The noise level has also been further reduced by 6%, while providing a damping factor of 1,000. The A-48S will bring the best out of any speaker, enabling you to enjoy unparalleled sound quality and expansiveness.

Features

  • Class A driven 6-parallel push-pull MOS-FET output stage
  • Large linear output of 50 W / 8 ohms, 100 W / 4 ohms, 200 W / 2 ohms, 400 W / 1 ohm
  • Instrumentation amplifier
  • Current feedback amplification topology
  • Balanced remote sensing
  • MCS+ circuitry
  • Large, high-efficiency toroidal transformer
  • High capacity 68,000 μF filtering capacitors
  • Large speaker terminals connected directly to protection circuitry
  • Protection circuitry using MOS-FET switches
  • High damping factor of 1,000
  • Large, high-sensitivity power meters ranging from –50 dB
  • Bi-amping connection and bridged connection switching
  • Speaker output protection circuit guards against short-circuiting
  • Aluminum hairline finish top plate
  • High-carbon cast iron insulator feet with superior damping characteristics

Specifications

Rated Output: (20 – 20,000 Hz)
Load: 8 ohms / 4 ohms / 2 ohms / 1 ohm
Normal / Bi-amping Connection: 50 W / 100 W＊ / 200 W＊ / 400 W＊
Bridged Connection: 200 W＊ / 400 W＊ / 800 W＊ / –
Total Harmonic Distortion: (20 – 20,000 Hz, at rated output)
Normal / Bi-amping Connection: 2 ohms: 0.05% / 4 to 16 ohms: 0.03%
Bridged Connection: 4 to 16 ohms: 0.05%
Intermodulation Distortion: 0.01%
Frequency Response: At rated output: 20 – 20,000 Hz (+0, –0.2 dB)
Frequency Response: At 1 W output: 0.5 – 160,000 Hz (+0, –3 dB)
Damping Factor: Normal / Bi-amping connection: 1,000
Input Impedance: BALANCED / LINE input: 40 kilohms / 20 kilohms
Input Sensitivity:
Output: At rated output / At 1 W output
Normal / Bi-amping Connection: 0.80 V / 0.11 V
Bridged Connection: 1.59 V / 0.11 V
Signal-to-Noise Ratio:
(A-weighted, input shorted)
GAIN Switch at MAX / –12 dB: 118 dB / 123 dB
Gain:
Gain Switch: MAX / –3 dB / –6 dB / –12 dB
Gain Values: 28 dB / 25 dB / 22 dB / 16 dB
Power Meters: Format: Logarithmic scale, with illumination off switch
Display Range: –∞ to +3 dB
Hold Time: Switchable
Power Requirements: 120/220/230 V AC, 50/60 Hz (Voltage as indicated on rear panel)
Power Consumption:
Idle: 200 W
In Accordance with IEC62368-1: 220 W
Standby: 0.3 W
Maximum Dimensions: Width: 465 mm (18.3”) × Height: 211 mm (8.3”) × Depth: 464 mm (18.3”)
Mass:
Net: 34.8 kg
In Shipping Carton: 41 kg

Testimonials

4.92 ★ (407)
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