Italian Hybrid Amplification with Tube Musicality and High-Current Power
The Unison Research Unico 150 Hybrid Integrated Amplifier combines the tonal richness and dimensional presentation of vacuum tubes with the control, current delivery and speaker-driving capability of a powerful solid-state output stage. Its streamlined three-stage signal path uses ECC83 and 6H30 tubes operating in pure Class A before handing the signal directly to a thermostable Class AB HEXFET power section.
Rated at 150 watts per channel into 8 ohms and 250 watts per channel into 4 ohms, the Unico 150 is designed to drive demanding high-performance loudspeakers while preserving fine detail, natural texture and dynamic contrast. Its flexible connection options include balanced and unbalanced sources, a dedicated bypass input, fixed and variable line outputs and dual speaker terminals for bi-wiring.
Highlights & Benefits
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Hybrid Three-Stage Architecture — Two tube amplification stages feed a high-current MOSFET output section, combining valve character with solid-state authority.
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Powerful Loudspeaker Control — Delivers 150 watts per channel into 8 ohms and 250 watts per channel into 4 ohms for confident performance with demanding speakers.
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Balanced and Unbalanced Connectivity — Accommodates a wide range of high-quality analog sources through three RCA and two balanced XLR inputs.
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Home Theater Bypass Integration — A dedicated bypass input allows the power-amplifier section to be incorporated into a surround-sound system.
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Flexible System Expansion — Includes a fixed-level tape output, volume-controlled subwoofer output and dual speaker terminals for bi-wiring.
Technology & Design
Pure Class A ECC83 Input Stage — A double-triode totem-pole input circuit provides the initial voltage amplification while preserving low-level musical detail and natural harmonic structure.
Pure Class A 6H30 Driver Stage — The robust 6H30 double triodes directly drive the output section, helping maintain speed, control and signal integrity without adding unnecessary gain stages.
Thermostable HEXFET Output Stage — Four complementary MOSFET pairs per channel operate in Class AB to provide substantial current delivery and stable performance across changing loudspeaker loads.
Minimal Global Feedback Design — The amplifier uses no global negative feedback while applying localized feedback within individual stages to support stability, bandwidth and musical coherence.
FAQ — Unison Research Unico 150
Is the Unico 150 a tube amplifier or a solid-state amplifier?
The Unico 150 is a hybrid integrated amplifier. It uses ECC83 and 6H30 vacuum tubes in its input and driver stages, followed by a high-power solid-state HEXFET output stage.
Does the Unico 150 include a phono input?
No dedicated phono stage is listed among the standard inputs. A separate moving-magnet or moving-coil phono preamplifier is required when connecting most turntables.
Can the Unico 150 be integrated into a home theater system?
Yes. Its unbalanced bypass input routes the signal directly to the amplifier section while bypassing the source selector and volume control, allowing an AV processor or receiver to control the front-channel level.
What does the included remote control operate?
The supplied infrared remote control adjusts volume up or down. Source selection is performed using the selector control on the amplifier’s front panel.
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