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Unison Research, founded in 1987 by a group of audiophile technicians, are a prestigious Italian manufacturer of valve-based premium high fidelity audio components. Specialising in the design and construction of amplifiers, CD players, headphone amps and phono stages that boast not only impeccable, effortlessly rich sound, but also an artistic visual design.
The Unico 90 features a double triode totem pole EEC 83 valve, and a single parallel totem pole ECC81 triode per each channel in the input stage. The amplifier itself is comprised of premium quality German Mundorf componentry and an innovative, Unison Research-specific circuit to deliver a weighty, rich 160 watts for channel.
The Unico 90 is a class A hybrid integrated amplifier and offers a zero feedback performance.
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,
(3 pairs for channel)
Number of stages 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
Line Outputs 1 tape, 1 sub
Output connectors 4 + 4 bi-wiring Global Feedback factor 0dB THD < 0.15% @ 1kHz, 1 W
< 0.5% @ 1kHz, 10 W
Output resistance <0.4 ohm, resistive
on all audio frequencies
Power Consumption 550 W
(at max power on 8 ohm)
Dimensions 43.5cm x 44 cm x 18 cm h Net weight 20kg
Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.
Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.
Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at http://www.interlinkexpress.com to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.
*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.
Shipping Costs Mainland UK (Next-Day) Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly Islands Republic of Ireland (2-day) Under £50 Orders £7.50 £12.50 £15.00 Over £50 Orders FREE £19.99 £29.99 Surcharge Orders £50.00 £69.99 £79.99 Saturday Delivery £12.99 N/A N/A Sunday Delivery £12.99 N/A N/A Saturday by 12 Delivery £35 N/A N/A
Post codes exempt from the free delivery service include:
Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25
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