Unison Research - Black Edition - S6 BE

Unison Research - Black Edition - S6 BE
The Unison Research S6 Black Edition elevates the classic S6 integrated tube amplifier with thoughtful technical and aesthetic enhancements that satisfy discerning audiophiles. Built around a pure Class-A ultralinear topology, it utilizes premium Gold Lion valve two ECC83 signal tubes and three KT77 power tubes per channel wired in parallel to deliver rich, expressive sound with 40 watts per channel into 6 Ω.
The amplifier’s signal path and power management have been revised to reduce noise and improve control, while Return GND grounding technology and microrelays with gold-plated silver contacts ensure stable, interference-resistant source selection. Connectivity includes four analog RCA inputs plus USB, coaxial SPDIF, and optical Toslink digital inputs for high-resolution sources, complemented by an unfiltered subwoofer output that maintains tonal integrity.
Finished with a striking piano black front and dark gun-metal chassis, the S6 Black Edition combines Italian design heritage with modern versatility and sonic refinement.
FEATURES:
- Pure Class-A ultralinear tube amplification
- Gold Lion ECC83 and KT77 tubes for rich sonic detail
- Revised signal path and enhanced power management
- Return GND grounding for reduced noise and crosstalk
- Microrelay input selector with gold-plated silver contacts
- Four analog RCA line inputs
- Digital inputs: USB, coaxial SPDIF, Toslink optical
- Unfiltered stereo subwoofer RCA output
SPECIFICATIONS:
| Product Type: | Integrated tube amplifier |
| Amplification Class: | Class A ultralinear |
| Output Power: | 40 watts per channel into 6 Ω |
| Signal Tubes: | 2 × ECC83 Gold Lion |
| Power Tubes: | 3 × KT77 Gold Lion per channel (parallel) |
| Polarization: | Pure Class A, ultralinear with 20% tap |
| Analog Inputs: | 4 × RCA line level |
| Digital Inputs: | USB, coaxial SPDIF, Toslink optical |
| Subwoofer Output: | Stereo RCA (unfiltered) |
| Bandwidth (-1 dB): | 15 Hz – 30 kHz |
| Dimensions (H × W × D): | 35" × 49" × 22" (88.9mm x 124.4mm x 55.8mm) |
| Weight: | 60 lbs (27.2kg) |
| Finish: | Piano black wood and gun-metal chassis |
