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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
Book a Demonstration

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

Bought some Rega Kyte speakers, stands and chords from DB online and they were incredibly helpful. They updated my delivery address very quickly and recommended a longer cut of cables which they did complimentary. They also noticed I didn’t order with banana plugs so called me back to double check, which I did mean to order. When i had some issues connecting my cables and speakers, I called for some advice which they happily gave. Excellent service and next day delivery to London. Thoroughly recommend.

James F.

Probably one of the best companies in the world. They had to special order in the speakers which took a fair bit of time, which is totally understandable, but they kept in touch with me throughout the entire time with updates (even on a Sunday!!!) and once the speakers were with them, they were dispatched and arrived next day.

The entire sound system that I purchased is insanely good, but still not as good as Doug Brady HiFi!

Guy H.

I have recently purchased a HiFi package with Doug Brady and I could not be more thrilled with my experience with them.
When I walked into the store, I was made to feel welcome and was introduced to some of the products. I produces a list of specific items I was interested in and John was really helpful in showing me these items. He set the system up so I could experience it, he made some suggestions which made the package even better. Nothing seemed too much trouble for him, he was very knowledgeable about the products and gave great advice. I didn't feel pressured to buy anything, or didn't feel that he was upselling at any point. I left with an amazing package and I'd like to thank John and the team for the fantastic experience.

Kaylay L.

It’s now two weeks since I bought home my new system and I wanted to say thanks again for all your help, advice and guidance, not to mention cups of tea. I now have a system that meets all my requirements and sounds fantastic. Special thanks to Jon, who I hope is on the road to recovery from his operation and to Roger, who helped me finalise my choice. The Rega Saturn, Hegel H190V and Dali Rubicon 2 is undoubtedly the best system I have ever owned.

Bryan M