Accuphase A-48S Class-A Stereo Power Amplifier

Accuphase A-48 Class-A Stereo Power Amplifier

Accuphase A-48S Class-A Stereo Power Amplifier

Name: Accuphase A-48S Class-A Stereo Power Amplifier
Brand: Accuphase
SKU: ACCA48S
Availability: InStock

Product variants

Pure Power, Refined Performance

The Accuphase A-48 is a powerhouse amplifier designed to deliver exceptional performance in high-end audio systems. With its robust construction and advanced circuitry, the A-48 offers a level of control and authority that is second to none.

At the heart of the A-48 lies a fully balanced Class-A amplifier circuit, ensuring exceptional linearity and low distortion. The amplifier's power supply is meticulously designed to provide clean, stable energy, even during demanding listening sessions. The result is a sound that is both powerful and refined, capable of driving even the most demanding speakers with ease.

Specifications

Continuous Average Output Power (20–20,000 Hz): Stereo operation (both channels driven) - 400 watts per channel into 1 ohm, 200 watts per channel into 2 ohms, 100 watts per channel into 4 ohms, 50 watts per channel into 8 ohms. Monophonic operation (bridged connection) - 800 watts into 2 ohms, 400 watts into 4 ohms, 200 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: 1000

Input Impedance: Balanced - 40 kilohms. Line - 20 kilohms

Signal-to-Noise Ratio (A-weighted, input shorted): 118 dB (GAIN selector at MAX), 123 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: 200 watts idle.

Maximum Dimensions: Width 465 mm, Height 211 mm, Depth 464 mm

Mass: 34.8kg

The 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 power output: 50W/8Ω, with up to 400W/1Ω for dynamic and demanding music passages.
6-parallel MOS-FET output stages for stable, distortion-free power across various speaker loads.
Ultra-low noise with an S/N ratio of 118dB, ensuring a crystal-clear and detailed soundstage.
Super high damping factor of 1000, allowing for precise control of speaker drivers and delivering tight, controlled bass.
Comprehensive protection systems, including short-circuit protection and temperature sensors, ensuring long-term reliability and safety.

At Soundline, we believe that Accuphase products offer high-end performance without an eye-watering price tag. The A-48S delivers exceptional sound quality, build integrity, and reliability, making it an ideal choice for audiophiles seeking performance that lasts.

To learn more about the Accuphase A-48 or to schedule a demonstration, please contact us.