Audio Research Reference 160M MkII

24490 €

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The Reference 160M MkII Monoblock Power Amplifier is a central pillar in the Audio Research range of Reference Amplifiers.

It features a refined audio topology with fewer and better components in the signal-path than in previous designs, switchable Ultralinear/Triode operation, proprietary auto-bias, output tube monitoring and protection, and much more.

This array of features has never been offered before in an Audio Research amplifier, but has now been adopted across the product range.

Key design elements

While the trademark GhostMeter™ serves as a window to the output tubes, it also incorporates an innovative power output meter with distinctively etched markings that create an integrated display with adjustable brightness.

Four KT150 output tubes and two 6H30 driver tubes form the core of the audio circuit.

The power supply stage uses a newly developed High Energy Capacity Transformer and a hefty bulk storage-capacity network to provide extremely high current on demand for transient peaks and intense dynamics, as well as for prodigious bass depth and authority.

REF160M MkII also features a proprietary auto-bias circuit that works with various tubes types, including 6550, KT88, and KT120, in addition to the supplied KT150 and works constantly to maintain precise bias of the output tubes, while also adjusting for tube wear. There is no need to check or adjust bias ever again.

The new REF 160M MkII breaks new ground sonically, aesthetically and operationally, and is available in Natural (Silver) or Black finishes.

SPECIFICATIONS

Power output	140 W continuous (20 Hz – 20 kHz)
Operating modes	Switchable Ultralinear / Triode (≈140 W / 75 W)
Topology	Fully balanced design with short signal path · discrete components
Tube complement	4 × KT150 (output) · 2 × 6H30 (driver)
Tube biasing	Proprietary automatic bias system (no manual adjustment required)
Inputs	1 × XLR (balanced) · 1 × RCA (single-ended)
Output taps	4 Ω · 8 Ω · 16 Ω
Frequency response (-3 dB)	0.5 Hz – 110 kHz
Power bandwidth	5 Hz – 70 kHz
Input sensitivity	2.4 V RMS (balanced)
Input impedance	200 kΩ (balanced) · 100 kΩ (single-ended)
Gain	~25.5 dB
THD	~1% at full power · < 0.04% at 1 W
Negative feedback	14 dB
Damping factor	~14
Slew rate / Rise time	13 V/µs · 2.0 µs
Controls / Features	Auto-bias · tube monitoring & protection · RS-232 · 12 V trigger · auto-off · fan speed control
Display	GhostMeter® analog VU meter with adjustable illumination
Power consumption	~400 W at rated output · ~260 W idle · ~1 W standby
Dimensions (W × H × D)	438 × 254 × 470 mm
Net weight	25.5 kg