ACCUPHASE A47

The A-47 is a successor model to the A-46, based on the design technology developed for higher-ranked models. It is a full-fledged Pure Class A Stereo Amplifier that produces truly captivating sound. The output stage of the A-47 uses high-performance power MOS-FETs ideal for audio applications. For each channel, six devices are arranged in a parallel push-pull Pure Class A arrangement. This results in very low output impedance, ensuring that constant drive voltage is available also for low-impedance loads. Superior performance is evident from the linear power progression of 45 watts into 8 ohms, 90 watts into 4 ohms, and 180 watts into 2 ohms. The amplifier is even capable of driving ultra-low 1-ohm impedances with an amazing 360 watts (music signals only).

The input stage circuitry is configured as an instrumentation amplifier. This approach makes it possible to achieve fully balanced signal paths, extending from the signal input all the way to the final power amp stage. Using the A-47 in bridged mode creates a mono amplifier with even more impressive power output capability, rated for 180 watts into 8 ohms, 360 watts into 4 ohms, and 720 watts into 2 ohms (music signals only).

• Pure Class A operation delivers quality power: 45 watts x 2 into 8 ohms
• Power MOS-FET output stage features 6-parallel push-pull configuration
• Instrumentation amplifier principle used in amplification stage
• Further evolved MCS+ circuit topology
• Current feedback principle combines stable operation with outstanding sound quality
• Bridged connection mode allows upgrading to monophonic amplifier
• Large high-efficiency toroidal power transformer
• 4-stage gain control

Specifications of ACCUPHASE A47

●Intermodulation Distortion 0.01%
●Frequency Response At rated continuous average 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 (GAIN selector in MAX position)
(Stereo/monophonic operation)
●Gain Selection –12 dB, –6 dB, –3 dB, MAX
●Damping Factor 600
●Input Sensitivity (with 8-ohm load, GAIN selector in MAX position)
Stereo operation: 0.76 V for rated continuous average output
0.11 V for 1 watt output
Monophonic operation: 1.51 V for rated continuous average output
0.11 V for 1 watt output
● Input Impedance Balanced: 40 kilohms
Line: 20 kilohms
● S/N ratio (A-weighted, with input shorted)
116 dB (GAIN selector in MAX position)
121 dB (GAIN selector in –12 dB position)
At rated continuous average output
● Output Level Meters –40 dB to +3 dB (indication in dB and %)
Logarithmic scale, with illumination off switch and sensitivity
selector (–20 dB)
● Power Requirements 120 V, 220 V, 230 V AC (voltage as indicated on rear panel),
50/60 Hz
●Power Consumption 200 watts idle
410 watts in accordance with IEC 60065
●Maximum Dimensions Width 465 mm (18-5/16")
Height 211 mm (8-5/16")
Depth 464 mm (18-1/4")
●Mass 32.1 kg (70.8 lbs) net
39.0 kg (86.0 lbs) in shipping carton

SAIGON HD cam kết toàn bộ sản phẩm do chúng tôi cung cấp ra thị trường đều là Hàng chính hãng, được phân phối chính thức tại thị trường Việt Nam. Nếu Quý khách hàng phát hiện ra bất kỳ sản phẩm nào sai cam kết trên, chúng tôi chấp nhận chịu trách nhiệm trước pháp luật và đền bù thiệt hại đến Quý khách hàng.