Unison Research S6 Stereo Integrated Tube Amplifier

The Unison Research S6 is a well-regarded integrated amplifier that combines thoughtful design with the quality craftsmanship Unison Research is known for. Over the years, the S6 has been updated and refined to maintain its reputation as a reliable and high-performing amplifier. Its elegant design, featuring wooden inlays on the front panel, underscores the attention to detail that comes with the "Made in Italy" label.

Key Features

• Single-Ended Ultra-Parallel Configuration: Capable of driving most speakers, including those with low sensitivity.
• Custom Output Transformer: Handcrafted for linear frequency response and consistent sound quality.
• Pure Class A Operation: Delivers the warmth and detail typical of quality valve amplifiers.
• Gold-Plated Inputs and Outputs: Ensures lasting performance and reliable connections over time.
• Handcrafted Wooden Components: Adds a touch of craftsmanship and elegance to the design.
• Heat Management Design: Features an arc layout for power tubes and a stainless steel baseplate to manage heat effectively.

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. 

Design and Build Quality

The S6 is designed for both performance and reliability. It uses a Single-Ended Ultra-Parallel configuration with three EL34 pentodes per channel, coupled to two triode preamp stages. The custom-built output transformer is designed to provide a linear frequency response, ensuring a balanced and accurate sound. The power transformer is robust, delivering the energy needed to operate the amplifier under various conditions. The design minimizes the number of electronic components in the audio path, helping to maintain the purity of the sound.

Aesthetic and Functional Design

The S6’s design is both practical and visually appealing. The amplifier features handcrafted wooden components and precision-machined stainless steel rotary controls. The power tubes are arranged in an arc to facilitate heat dissipation, while a protective grille allows for proper ventilation without obstructing the view of the tubes.

Sound Performance

The Unison Research S6 is designed to deliver detailed, dynamic sound with the warmth that valve amplifiers are known for. The sound quality has been carefully calibrated through extensive listening tests, achieving a balance between detail, transparency, and warmth.

Versatility and Connectivity

With five line-level inputs and one tape output, the S6 offers a range of connectivity options for different audio sources. It’s versatile enough to drive a wide variety of speakers, including those with lower sensitivity.

The Listening Room Experience

Your listening space is unique, and so are your needs. That's why we take the time to understand your preferences, your room acoustics, and your sonic dreams. We'll guide you through our range of hi-fi options, ensuring you find the perfect match for your space and budget. We believe in personal connections, exceptional service, and expert advice because when it comes to sound, there's no one-size-fits-all solution. Contact us to learn more.

Specifications

• Type: Stereo Integrated Valve Amplifier
• Output Stage: Single-ended parallel, ultralinear
• Class: Pure Class A
• Output Power: 30/35 Watt/channel
• Frequency Response: 20 – 50,000 Hz
• Output Impedance: 6 Ohm
• Input Impedance: 47 kOhm
• Inputs: 5 line
• Outputs: 1 tape, loudspeakers
• Power Consumption: 265VA max
• Dimensions: 35 cm x 21 cm x 49 cm (L x H x P)
• Net Weight: 55 lbs