Unison Research Integrated Amplifiers
Absolute 845
The popular American magazine The Absolute Sound first picked the Absolute 845 as the best product of 1994. After more than 20 years, the Absolute is still ranked first overall in tube amps with a score higher than any other amplifier. No other audio product has remained at the top of its class for so long. The Absolute 845 is not only the story of Unison Research, it is a significant piece of audio history in general, forever tied to the world of analog valves. In many ways, the Absolute is still unsurpassed.
Unison Research Absolute 845 Integrated Amplifier Specifications
Type: Dual mono Stereo Integrated Valve Amplifier
Stadio di usita: single ended parallelo A class
Output Power: 40 watt / channel
Output Impedance: 4 – 8 Ohm
Inputs: 5 line, 2 tape
Input Impedance: 47 kOhm
Outputs: 2 tape, loudspeakers bi-wiring
Feedback factor: 10 dB
Frequency Response: 20 Hz – 30 kHz
Valves: 4 x 845, 6 x ECC82, 2 x ECC83
Power Consumption: 700 VA
Dimension: 31,7 x 23,8 x 11 inches
Net Weight: 199 lbs
Performance
In the twenty years we have been designing and building audio products, Unison Research has always listened to the concerns and comments of our customers worldwide. They realized that over time, those customer needs have changed. In response, we have given a different look to many of our products, and they’ve updated some of our most classic and beloved designs. The latest version of the legendary Performance integrated amplifier offers increased power while staying true to the look of the original—an icon of rare elegance and musical pleasure.
Unison Research Performance Integrated Amplifier Specifications
Type: Dual mono Stereo Integrated Valve Amplifier
Output Stage: single ended parallel ultralinare A class
Output Power: 45 W / channel
Inputs: 4 line, 1 tape
Input Impedance: 47 kOhm
Outputs: 1 tape, loudspeakers bi-wiring
Output Impedance: 4 – 8 ohm
Feedback factor: 16 dB
Frequency Response: 20 Hz – 30 kHz
Valves: 6 x 6550/KT88 , 2 x ECC82 , 2 x ECC83
Remote Control: IR inputs and volume
Power Consumption: 500VA max
Dimension: 60cm x 48cm x 23,5 cm.
Net Weight: 50 Kg
Sinfonia
Part of Unison Research’s classic line of tube amplifiers that include the Preludio and the Performance, the Sinfonia integrated amplifier retains the technical approach, sound and beautiful aesthetics found in the rest of the line. While the Sinfonia offers both stunning looks and equally stunning sound, it is also extremely reliable due to its unique design solutions, quality materials and the highest of build quality standards.
Unison Research Sinfonia Integrated Amplifier Specifications
Type: Dual mono Stereo Integrated Valve Amplifier
Output Stage: single ended parallel ultraliner A class
Output Power: 25W
Inputs: 4 line, 1 tape
Input Impedance: 47 kOhm
Outputs: 1 tape, 1 subwoofer, loudspeakers bi-wiring
Output Impedance: 4 – 8 ohm
Feedback factor: 14dB
Frequency Response: 20 – 30000 Hz
Valves: 4 x 6550/KT88, 2 x ECC82, 2 x ECC83
Remote Control: IR inputs and volume
Power Consumption: 500W max
Dimension: 44 x 42 x 21 cm.
Net Weight: 55 Ibs
Preludio
Part of Unison Research’s classic line of tube amplifiers that include the Sinfonia and the Performance, the Preludio integrated amplifier continues the technical approach, sound and aesthetics of its larger siblings. While the Preludio’s appearance is certainly gorgeous, it is also extremely reliable due to its unique design solutions, quality materials and adherence to the highest of standards.
Unison Research Preludio Integrated Amplifier Specifications
Type: Stereo Integrated Valve Amplifier
Output Stage: single ended ultraliner A class
Output Power: 14W / channel
Inputs: 4 line, 1 tape
Outputs: 1 tape, 1 sub woofer, loudspeakers
Input Impedance: 47 kOhm
Output Impedance: 6 ohm
Feedback factor: 10dB
Frequency Response: 15 – 50000 Hz
Valves: 2 x 6550/KT88, 2 x ECC82
Remote Control: IR for volume
Power Consumption: 200W max
Dimension: 37.5 x 40 x 18cm
Net Weight: 40 lbs
S6
The Unison S6 integrated amplifier offers personality, refinement and aesthetics…and a totally new amplifier design from a mechanical standpoint. The latest version of Unison Research S6 has been steadily updated and improved over the years to the point where it is easily one of the most respected integrated amplifiers in the world. The contrasting highlights of the wooden inlays on the front panel also reveal the technical sophistication of this amplifier, emphasizing the pride of ownership that comes with the term “Made in Italy.”
Unison Research S6 Integrated Amplifier Specifications
Type: Stereo Integrated Valve Amplifier
Output Stage: single-ended parallel, ultraliner
Classe: pure A class
Output Power: 30/35 Watt/channel
Frequency Response: 20 – 50000 Hz
Output Impedance: 6 Ohm
Input Impedance: 47 kOhm
Inputs: 5 line
Outputs: 1 tape, loudspeakers
Power Consumption: 265VA max
Dimensioni : 35 cm x 21cm x 49 cm (L x H x P )
Net Weight: 55 lbs
Triode 25
Three amplifiers symbolize the success of Unison Research: the Simply Two, the Triode 20 and the legendary Absolute. On the occasion of the 25th anniversary of the birth of Unison Research, they pay homage to these historic devices by offering the Simply Two and the Absolute in a limited and numbered “Anniversary” edition. They’ve also decided to offer a completely new version of the Triode 20 and named it, quite appropriately, the Triode 25.
Unison Research Triode 25 Integrated Amplifier Specifications
Output Stage: Push-pull, ultralinear, Class-AB
Output Power: Approx. 45 watt per channel
Pentode configuration
Approx. 25 watt per channel
Triode configuration
Output Impedance: 6 Ohm
Input Impedance: 47 kOhm / 50 pF
Negative feedback: 5 dB or 1.8 dB
Valve complement: 2 x ECC83 (12AX7) 1 x ECC82 (12AU7) 4 x EL34 (6CA7)
Power Consumption: 300 watt max
Fuses: T6.3A from 100V to 130V T3.15A from 220V to 250V
Dimensions: 30 cm x 45 cm x H. 20cm
Net weight : 20 Kg
Simply Italy
Unosin Research have taken what they’ve learned from designing our largest amplifiers, and applied to this small yet brilliant gem. The Simply Italy integrated amplifier builds on the legendary strengths of the Unison Research Simply Two, one of the most successful integrated amplifier designs in the world. This new integrated amplifier, thanks to more efficient engineering, provides better sound quality as well as better reliability and tube life.
Unison Research Simply Italy Integrated Amplifier Specifications
Type: Stereo Integrated Valve Amplifier
Output stage: Single-ended, ultralinear, Class-A
Output power: Approx. 12 watts per channel
Output impedance: 6 Ohm
Input impedance: 47kohm / 50 pF
Negative feedback: 5 dB or 1.8 dB
Valve complement: 2 x ECC82 (12AU7)
2 x EL34 (6CA7)
Power consumption: 85 watt
Fuses: T2A from 100V to 130V
T1A from 220V to 240V
Dimensions (mm.): 26 cm x 35 cm x H. 19cm
Net weight: 15kg
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