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Unison Research Preludio Integrated Valve Amplifier

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From £2,500.00 (FREE UK Delivery)
Item out of Stock  |  Usually dispatched within 24 hours
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Preludio is an integrated tube amplifier that maintains the distinctive technical elements, sound characteristics and stunning looks that Unison Research is known for. It bears an obvious resemblance to the higher-end Sinfonia and Performance amplifiers, but maintains a very appealing price for a product of such prestige.

Using double triode ECC82 valves the Preludio's pre and power amplification gives an exclusively valve amp performance that delivers a natural and dynamic presentation.

Special attention has been dedicated to the design of the output stage, which is based on two 6550 tubes. Tried and extensively tested, the bias setting of the 6550s ensures the best sound performance even after many years, and also contributes to minimising the time it takes for the tubes to warm up to optimal temperature.

Every part of the Preludio has been thoroughly thought out from the circuit boards to the control knobs to offer a premium design and a premium sound. For example, the top-plate is not just good looking, it's made from a magnetic stainless steel with low heat conduction to stop the heat generated by the 6550s interfering with the internal circuitry.

Features:

  • Stylish tube integrated amplifier
  • Dedicated pre, power and output stages per channel
  • Tube-based Class A amplification
  • 5 gold plated inputs
  • High quality powered design
  • 6550 tubes in the output stage
  • RC2 remote included
  • Available in Cherry or Mahogany

Technical Specification:

  • Output Stage: Single Ended Ultraliner A Class
  • Output Power (per-channel): 14W
  • Output Impedance: 6Ω 
  • Input Impedance: 47kΩ
  • Feedback Factor: 10dB
  • Valves: 2 x 6550 / 2 x ECC82 (12AU7)
  • Inputs: 4 x Line / 1 x Tape
  • Outputs: 1 x Tape / 1 x Subwoofer
  • Frequency Response: 15Hz - 50kHz
  • Power Consumption: 200W max.
  • Dimensions (W x D x H): 37.5 x 40 x 18cm
  • Net Weight: 18kg

We endeavour to despatch same day (for orders placed up to 2pm) on available stock items to the vast majority of UK mainland addresses. Please remember to check with us first for a physical stock check if next day delivery is important to you.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Free delivery also applies to the Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland but may take a day or so longer. Smaller items are delivered using Royal Mail recorded delivery or special delivery. Larger items are delivered using a courier service such as Interlink Express, DPD, UPS or DHL. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using DPD, DHL or UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Hifisound or by the courier with a request for any further information required. Customs duties do not apply for shipments into any EU country (for a full list please refer to the EU Country List). Customs duties can apply for countries outside of the EU. Customers in these countries are responsible for all taxes and duties incurred when the items enter their country.

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