Unison Research Reference Preamplifier


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The Reference represents the pinnacle of Unison Research`s creative work in preamplifier design. This is the two-chassis preamplifier conceived to partner the Reference Monoblock power amplifiers, and features the very finest components and a totally unique circuit with 300B tubes. A work of art itself, it delivers the purest possible musical signal to give the purity demanded by the most discerning audio customers. Truly a very special piece of equipment.

Operating mode:

4 line RCA, 2 line XLR
1 tape, 2 phono

1 line RCA, 1 line XLR
1 tape, 1 subwoofer

Valve complement:
2 x ECC82(12AU7)
2 x ECC83(12AX7)
2 x 6C45P
2 x 300B
2 x ECC83(12AX7) phono
4 x 6C45P phono

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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. For information on delivery costs, please refer to the table below or click this link for more information.


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Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Nothern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic 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 by 12 £35.00 N/A N/A


*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the list of post-codes located here 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 Isls, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.