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By Unison Research

Unison Research - Preludio - Integrated Tube Amplifier

Authorized Dealer • Full Manufacturer Warranty • Real Human Support

Regular price $4,299.00
Regular price Sale price $4,299.00
Shipping calculated at checkout.
Color: Cherry

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Availability can vary by model and finish. We’ll personally confirm shipping timing within one business day and reach out if anything is back-ordered.

Regular price $4,299.00
Regular price Sale price $4,299.00

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Call or text 914-907-7648.

The Unison Research Preludio is a beautifully crafted, pure Class A tube amplifier that delivers the unmistakable warmth, texture, and musicality only valves can provide. Built in Italy and part of Unison Research’s acclaimed “Classic Line,” the Preludio combines timeless design with refined engineering to create an amplifier that’s as engaging to listen to as it is to look at.

Using a single-ended ultralinear Class A topology, the Preludio produces 14 watts per channel of highly expressive power—perfect for pairing with efficient speakers in smaller to mid-sized rooms. The result is a rich, holographic soundstage with exceptional midrange presence, smooth treble, and a natural, emotionally engaging presentation that draws you deeper into your music.

Finished with a signature combination of real wood and brushed metal, the Preludio is unmistakably Italian—blending craftsmanship, character, and performance into a single piece of audio art.


Why Choose the Preludio?

Pure Class A Tube Sound:
Single-ended ultralinear design delivers warmth, detail, and musical realism.

Effortless Musicality:
A sweet, expressive midrange and refined treble create an immersive listening experience.

Built to Last:
Premium materials and thoughtful engineering ensure long-term reliability and performance.

Perfect for High-Efficiency Speakers:
14W per channel is ideal for sensitive speakers (≈90dB+), making it perfect for curated, high-end systems.

Timeless Italian Design:
Real wood finishes and elegant industrial styling make it a centerpiece in any listening room.


Key Features

  • Single-ended ultralinear Class A tube amplifier
  • 14W per channel output
  • 6550 / KT88 output tubes with ECC82 drivers
  • 4 line-level inputs + tape input
  • Subwoofer output for system flexibility
  • Remote control for volume
  • Handmade in Italy with premium materials

Output Stage: single ended ultraliner A class

Output Power: 14W / channel

Inputs: 4 line, 1 tape

Outputs: 1 tape, 1 sub woofer

Input Impedance: 47 kOhm

Output Impedance: 6 ohm

Feedback factor: 10dB

Frequency Response: 20Hz – 85kHz ( -1dB@ 7 W )

Valves: 2 x 6550/KT88, 2 x ECC82

Power Consumption: 200W max

Dimension: 37.5 cm x 40 cm x H 18 cm

Net Weight: 18kg, 40 lbs

Authorized Dealer

Eardrum Audio is an authorized retailer for the brands we sell. That means your purchase includes the full manufacturer’s warranty, factory support, and official after-sales service — exactly as intended by the manufacturer.

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