Unison Research Unico 90 Hybrid Integrated Amplifier
Unison Research Unico 90 Hybrid Integrated Amplifier
100 W ×2 (8 Ω) · 160 W ×2 (4 Ω) · Class AB / Tube Hybrid · Bi-Wiring · 6 Line Inputs
Overview — Unico 90
The Unison Research Unico 90 is a high-fidelity hybrid integrated amplifier that combines the warm, musical character of tubes in the preamp stage with powerful, stable solid-state amplification in Class AB. With 100 W per channel into 8 Ω (160 W into 4 Ω), it provides both elegance and strength.
The input stage uses ECC83 and ECC81 triode tubes in a totem-pole configuration, while the output stage uses thermostable HEXFET transistors. It supports multiple analog inputs, balanced and unbalanced, and features bi-wirable speaker terminals.
Highlights & Benefits
- Hybrid design with tube-based gain stage (ECC83/ECC81) for rich, warm tonality.
- Solid-state HEXFET power stage delivers stable, high-current drive.
- High power – 160 W into 4 Ω – handles demanding speakers.
- Six analog inputs (balanced + unbalanced) for flexible connectivity.
- Bi-wirable speaker outputs for better cable management and tuning.
- No global negative feedback for a more “open” tube-like presentation.
Design & Technology
Twin-Stage Signal Path — The first stage is a pure Class A tube preamp using ECC83 and ECC81 in a totem-pole configuration. The second stage is a solid-state, thermostable Class AB HEXFET amplifier (3 pairs per channel).
No Global Feedback — Uses only local feedback, preserving the natural character and timing of tube amplification.
Short Signal Paths & High-Grade Components — Designed with tight layout to reduce signal degradation; premium capacitors and transformers ensure musical purity.
Perfect For
- Audiophiles who want tube warmth with modern power and drive.
- Listeners with speakers that dip to lower impedances (4 Ω) and demand headroom.
- Systems that require multiple analog sources (turntable preamp, DAC, streamer, etc.).
- Users who appreciate bi-wiring for enhanced cable separation and tuning.
Customer & Expert Comments
“The hybrid circuit delivers both the warmth of tubes and the power of solid-state cleanly.”
“Bi-wiring and no global feedback make this a very musical, yet technically capable amp.”
FAQ — Unico 90
Why is there no global negative feedback?
Unison Research designed the Unico 90 to use only local feedback to maintain more of the natural timing and harmonic character of the tubes, resulting in a more open and musical presentation.
Can it drive 4-ohm speakers?
Yes — it delivers 160 W per channel into 4 Ω.
Does it support balanced inputs?
Yes — there are 2 × XLR balanced line inputs, in addition to unbalanced inputs.
Why Buy From Us
- Authorized Unison Research Dealer
- Expert guidance from hybrid-amplifier specialists
- Free nationwide shipping on all orders
- 5% Reward Points on every purchase for future savings
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Unison Research Unico 90 Hybrid Integrated Amplifier
100 W ×2 (8 Ω) · 160 W ×2 (4 Ω) · Class AB / Tube Hybrid · Bi-Wiring · 6 Line Inputs
Overview — Unico 90
The Unison Research Unico 90 is a high-fidelity hybrid integrated amplifier that combines the warm, musical character of tubes in the preamp stage with powerful, stable solid-state amplification in Class AB. With 100 W per channel into 8 Ω (160 W into 4 Ω), it provides both elegance and strength.
The input stage uses ECC83 and ECC81 triode tubes in a totem-pole configuration, while the output stage uses thermostable HEXFET transistors. It supports multiple analog inputs, balanced and unbalanced, and features bi-wirable speaker terminals.
Highlights & Benefits
- Hybrid design with tube-based gain stage (ECC83/ECC81) for rich, warm tonality.
- Solid-state HEXFET power stage delivers stable, high-current drive.
- High power – 160 W into 4 Ω – handles demanding speakers.
- Six analog inputs (balanced + unbalanced) for flexible connectivity.
- Bi-wirable speaker outputs for better cable management and tuning.
- No global negative feedback for a more “open” tube-like presentation.
Design & Technology
Twin-Stage Signal Path — The first stage is a pure Class A tube preamp using ECC83 and ECC81 in a totem-pole configuration. The second stage is a solid-state, thermostable Class AB HEXFET amplifier (3 pairs per channel).
No Global Feedback — Uses only local feedback, preserving the natural character and timing of tube amplification.
Short Signal Paths & High-Grade Components — Designed with tight layout to reduce signal degradation; premium capacitors and transformers ensure musical purity.
Perfect For
- Audiophiles who want tube warmth with modern power and drive.
- Listeners with speakers that dip to lower impedances (4 Ω) and demand headroom.
- Systems that require multiple analog sources (turntable preamp, DAC, streamer, etc.).
- Users who appreciate bi-wiring for enhanced cable separation and tuning.
Customer & Expert Comments
“The hybrid circuit delivers both the warmth of tubes and the power of solid-state cleanly.”
“Bi-wiring and no global feedback make this a very musical, yet technically capable amp.”
FAQ — Unico 90
Why is there no global negative feedback?
Unison Research designed the Unico 90 to use only local feedback to maintain more of the natural timing and harmonic character of the tubes, resulting in a more open and musical presentation.
Can it drive 4-ohm speakers?
Yes — it delivers 160 W per channel into 4 Ω.
Does it support balanced inputs?
Yes — there are 2 × XLR balanced line inputs, in addition to unbalanced inputs.
Why Buy From Us
- Authorized Unison Research Dealer
- Expert guidance from hybrid-amplifier specialists
- Free nationwide shipping on all orders
- 5% Reward Points on every purchase for future savings
