Unison Research S6 Black Edition

Unison Research S6 Black Edition is a testament to the harmonious blend of traditional tube amplification and modern digital integration. Building upon the esteemed legacy of the original S6, this integrated stereo tube amplifier introduces a host of enhancements that elevate its performance and versatility. From its refined circuitry to its elegant aesthetics, the S6 Black Edition delivers a rich, dynamic, and immersive listening experience. Stereophile review here.

Key Features

Enhanced Power Output
Delivering 40 watts per channel into 6Ω, the S6 Black Edition offers a 15% increase over the standard model, ensuring ample headroom and dynamic range for a variety of loudspeakers.

Cathode Capacitor-Less (CCL) Technology
By eliminating traditional cathode capacitors and resistors, the amplifier achieves improved low-frequency response and reduced phase shift, resulting in a more natural and detailed sound.

Integrated High-Resolution DAC
Equipped with a Sabre ES9018K2M supporting USB (up to PCM 384kHz and DSD256), SPDIF, and Toslink inputs, the S6 Black Edition seamlessly integrates digital sources into your high-fidelity setup.

Premium Tube Complement
Utilizing 2 x ECC83 and 6 x KT77 Gold Lion tubes, the amplifier delivers a warm, harmonically rich sound signature characteristic of high-quality tube amplification. 

Refined Circuit Design
The revised circuitry includes a seven-section output transformer and improved power management, lowering noise, and enhancing signal stability and channel separation for superior audio fidelity. 

Elegant Aesthetics
Featuring a piano-black lacquered front panel and gunmetal finishes, the S6 Black Edition exudes sophistication and complements any listening environment.

Technical Specifications

• Output Power: 40W per channel into 6Ω

• Frequency Response: 15Hz – 30kHz (-1dB)

• Signal Tubes: 2 x ECC83 Gold Lion

• Power Tubes: 3 x KT77 Gold Lion per channel

• Polarization: Pure Class A in ultralinear configuration with 20% tap

• Inputs: 4 x RCA line-level, 1 x USB, 1 x SPDIF, 1 x Toslink

• Outputs: 1 x stereo RCA subwoofer

• Dimensions (W x H x D): 35 x 22 x 50 cm

• Weight: 25 kg

Experience the S6 Black Edition

The Unison Research S6 Black Edition stands as a testament to the harmonious blend of traditional tube amplification and contemporary digital integration. Its enhanced power output and refined circuitry ensure that it can drive a wide range of loudspeakers with ease, delivering a captivating and immersive audio experience.

Elevate your audio experience with the Unison Research S6 Black Edition—where Italian design meets sonic perfection.