REFERENCE 160M MK2

歷經兩年研發，全新 Reference 160M MkII (REF 160M MkII) 單聲道功率放大器，其構造、外觀和音質均獨一無二，堪稱您從未聽過的放大器，但它無疑是 Audio Research 的經典之作。它採用精妙的音訊拓撲結構，訊號路徑中的元件數量比以往更少，但性能更卓越，並支援超線性/三極管切換，擁有專有的自動偏壓功能、輸出電子管監控和保護功能、先進的功率計等等。這些功能在 Audio Research 擴大機中前所未有。

Technical Specifications

POWER OUTPUT- 140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical).

POWER BANDWIDTH- (-3dB Points) 5Hz to 70kHz.

FREQUENCY RESPONSE- (-3dB points at 1 watt) 0.5Hz to 110kHz.

INPUT SENSITIVITY- 2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms).

INPUT IMPEDANCE- 200 k ohms Balanced.

OUTPUT POLARITY- Non-inverting. Balanced input pin 2+ (IEC-268).

OUTPUT TAPS- 16 ohms, 8 ohms, 4 ohms.

OUTPUT REGULATION- Approximately 0.6dB 16 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 14).

OVERALL NEGATIVE FEEDBACK- 14dB SLEW RATE: 13 volts/microsecond RISE TIME: 2.0 microseconds.

Physical Specifications

POWER REQUIREMENTS- 105-130VAC 60Hz (210-250VAC 50Hz) 400 watts at rated output, 700 watts maximum, 260 watts at “idle”, 1 watt off.

TUBES REQUIRED- 2 matched pair KT150 (Power output V1-4); 2 6H30 (Gain stage V5 and V6).

DIMENSIONS-
Width 17.25” (43.8 cm)
Height 10” (25.4 cm)
Depth 18.5” (47 cm)
Handles Extended 19.25” (48.9 cm)

WEIGHT-
56lbs (25.5 kg) Net
73lbs (33.2 kg) Shipping