Unison Research S6 Black Edition | Class A valve integrated amplifier with DAC | 2 YEAR WARRANTY

Name: Unison Research S6 Black Edition | Class A valve integrated amplifier with DAC | 2 YEAR WARRANTY
Brand: Unison Research
SKU: 73758
Price: 5899.00 CHF
Availability: BackOrder

Reference 73758

CHF5,899.00 Tax included

Supplier stock – typically 4 to 7 days

Unison Research S6 Black Edition, a pure Class A valve integrated amplifier with six KT77 Gold Lion valves in parallel single-ended and 40 W into 6 ohms. It adds a Sabre DAC with USB, S/PDIF and Toslink inputs to its four line inputs.

Description
Product Details

Black valve amplifier at three-quarter angle, piano black lacquered wood front panel

The S6 in Black Edition

The S6 Black Edition gets a piano black wooden front panel, a black gun metal finish and updated lettering. The circuit has been revised in the signal path and power management, and output rises to 40 W, 15% more than the standard model. The chassis measures 35 x 49 x 22 cm and weighs 25 kg, and an infrared remote control is supplied.

Top view with the two rows of KT77 and the bias meters

Six KT77 in dual mono

Dual mono amplification relies on three KT77 Gold Lion valves in parallel per channel, in triple single-ended, with two ECC83 Gold Lion for the input stage. The output valves run in pure Class A, in ultralinear mode with a 20% tap. The output transformer, wound in seven sections, is designed for maximum power transfer into 6 ohms.

No cathode capacitor

Cathode Capacitor Less technology removes the cathode capacitor and resistor from the output valves, which are biased by a dedicated negative grid supply, with no auto-bias. Bass therefore extends without phase shift or colouration, with a bandwidth of 15 Hz to 30 kHz at -1 dB. Bias is adjustable for each output valve, and the amplifier stays as noiseless as a solid-state design.

Rear panel with speaker terminals, RCA inputs and digital inputs

DAC and four line inputs

The internal DAC3, based on a Sabre ES9018K2M, adds to the four RCA line inputs a USB input handling PCM up to 384 kHz, native DSD up to 256x and DoP up to 128x, plus Toslink and S/PDIF inputs up to 192 kHz. Sources are switched by micro relays with gold-plated silver contacts and Return GND technology. An unfiltered subwoofer output completes the set, and the valves have a 3-month warranty.

Reference 73758

Data sheet

Product Type: Integrated amplifier
Tube amplifier
Features: 47 kΩ input impedance
As noiseless as a solid-state amplifier
Bias adjustable for each power valve
Cathode Capacitor Less (CCL) technology, no auto-bias
Dual mono amplification
Infrared remote control
Relay input selector with Return GND technology
Brand: Unison Research
Integrated DAC: ESS ES9018K2M
Audio outputs: 1 RCA subwoofer output (stereo)
Line-level Sub Out, unfiltered
Speaker outputs
Number of channels: 2
Digital inputs: 1 x USB, 1 x S/PDIF, 1 x Toslink
Analog inputs: 4 RCA line inputs
Output power: 40 W into 6 Ω
Color: Black
Technology: Output power valves: 3 x KT77 Gold Lion in parallel per channel
Signal valves: 2 x ECC83 Gold Lion
Hi-Res Audio: Toslink and S/PDIF: up to 192 kHz
USB: PCM up to 384 kHz, native DSD up to 256x, DoP up to 128x
Series: S6 Black Edition
Nominal impedance: 6 ohms
Amplification technology: Pure Class A, ultralinear (20% tap)
Pure class A
Triple parallel single-ended
Power consumption: Approx. 265 VA
Frequency response: 15 Hz - 30 kHz (-1 dB)
Width: 35.0 cm
Depth: 49.0 cm
Height: 22.0 cm
Unit weight: 25.0 kg