Unison Research Unico 90 Stereo Tube Hybrid Integrated Amplifier
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The Unico 90 Integrated Amplifier from Unison Research is a sophisticated blend of valve warmth and solid-state efficiency, designed to deliver high-fidelity sound that meets the highest standards. Combining advanced engineering with classic design, the Unico 90 stands out in its class for its ability to provide clear, precise audio across all frequencies. Its hybrid approach ensures that the amplifier delivers not only exceptional performance but also a visually appealing design that complements any high-end audio setup.
Key Features
- Hybrid Design: Combines the warmth of valve technology with the power of solid-state output.
- Two-Stage Circuit: Features a simplified design with zero global feedback for accurate sound reproduction.
- Power Output: Provides 160W per channel into 4Ω, ensuring clear, separated audio channels.
- Passive Preamplifier: Ensures improved channel separation and reduced cross-talk with a fully passive preamp section.
- Connectivity Options: Includes three RCA inputs, two XLR inputs, fixed and variable RCA outputs, and bi-wirable speaker terminals.
About Unison Research
Unison Research, founded in Italy, has a long-standing reputation for crafting high-fidelity audio equipment that marries traditional craftsmanship with cutting-edge technology. Each product reflects their passion for music and dedication to producing equipment that delivers both sonic excellence and visual beauty.
Circuit Design
The Unico 90 employs a hybrid circuit with a focus on simplicity and efficiency. Its two-stage design, featuring ECC83 and ECC81 tubes in a double-triode totem pole configuration, ensures minimal distortion and accurate gain. The output stage, which uses three pairs of HEXFETs per channel, delivers robust power while maintaining signal integrity.
Build Quality
Constructed with a sturdy casework and sleek design, the Unico 90 incorporates a three-plate front fascia, mirroring the aesthetics of the Unico 150. The large, durable case ensures longevity, while the passive preamplifier section includes a high-quality ALPS volume dial and precision mechanical relays to minimize signal loss.
Performance
The amplifier's performance is characterized by its clean power delivery and low distortion. The direct coupling design and lack of thermal compensation stages help preserve the sound's purity. The Unico 90 is engineered to handle various speaker types, including those with demanding specifications, providing reliable and consistent output.
Versatility and Compatibility
The Unico 90's design offers extensive versatility and compatibility with a range of audio sources and speakers. It features three RCA and two XLR inputs, accommodating various equipment setups. The amplifier also includes both fixed and variable RCA outputs and bi-wirable speaker terminals, making it adaptable to different speaker configurations. Its transformer design reduces the need for additional thermal compensation, and the selected capacitors contribute to high-frequency performance and low loss, ensuring seamless integration into diverse audio systems.
The Listening Room Experience
At The Listening Room, we take pride in offering more than just high-fidelity audio equipment. We provide expert advice, personalized service, and a commitment to helping you find the perfect sound system for your space. From delivery to custom setup, our goal is to ensure that every piece of equipment you purchase performs at its absolute best in your environment. Trust us to be your partners in the pursuit of exceptional sound.
Specifications
- Output power: 100+100 W RMS su 8Ω / 160+160 W RMS su 4Ω
- Frequency response: -1dB @ 12Hz e 45kHz -3 dB
- Input impedance: 21Kohm // 300pF
- Input sensitivity: 860mV RMS
- Input stage: Pure A class, double triode totem pole ECC83 and parallel totem pole ECC81 This single stage due to the particular circuitry is able to amplify the input signal and drive directly the power stage.
- Output stage: Class AB thermostable, complementary Hexfet (3 pairs for channel)
- Number of stage: 2, This amplifier due to the particular circuitry is realized by only two stages: input stage and output stage, and use only local feedback
- Input: 6 line (3 unbalanced, 2 balanced, 1 “bypass” unbalanced)
- Line Outputs: 1 tape, 1 sub (volume controlled)
- Output connectors: 4 + 4 bi-wiring
- Global Feedback factor: 0 dB
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THD:
< 0.15% @ 1kHz, 1 W
< 0.5% @ 1kHz, 10 W - Output resistance: <0.4 ohm, resistive on all audio frequencies
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Power Consumption: 550 W (at max power on 8 ohm)
- Dimensions: 43.5cm x 44 cm x 18 cm h
- Net weight: 44 lbs (20 kg)