Audio Research Reference 160S stereo Power Amplifier

Now on demonstration this is the much awaited successor to the Ref 150 and incorporates the revisions that made the Ref 160 mono blocks the "best amplifier in the world".


This Stereo version uses the same four layer circuit boards that dramatically decreased the signal length in the 160M monoblocks. It has been described as like buying a pair of 160Ms but just buying one and getting the second for an extra twenty percent ...


With eight KT150 valves inside ... and not just any KT150 but a group of specially made and selected and matched ... this has the option of Ultralinear or Triode modes of operation.


Ultralinear gives double the power apparently while triode offers the simplest circuit mode possible with lower power and sweeter sound.


And the first review from "Stereophile": Stereophile January 2020 on the Reference 160S



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Product Description

Details

Now on demonstration this is the much awaited successor to the Ref 150 and incorporates the revisions that made the Ref 160 mono blocks the "best amplifier in the world".

This Stereo version uses the same four layer circuit boards that dramatically decreased the signal length in the 160M monoblocks. It has been described as like buying a pair of 160Ms but just buying one and getting the second for an extra twenty percent ...

With eight KT150 valves inside ... and not just any KT150 but a group of specially made and selected and matched ... this has the option of Ultralinear or Triode modes of operation.

Ultralinear gives double the power apparently while triode offers the simplest circuit mode possible with lower power and sweeter sound.

And the first review from "Stereophile": Stereophile January 2020 on the Reference 160S

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

300k ohms Balanced; 100k ohms Single-ended.

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.

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

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

DIMENSIONS

Width  19.0” (48.26 cm)

Height 10.25” (26 cm)

Depth  21.5” (54,61 cm)

With Handles and Connectors: 24” (60.96 cm)

WEIGHT

100lbs

 

Additional Information

Additional Information

Finish No
Power (Watts) No
Phono Stage No
Speaker A/B No
Width No
Height No
Length No

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