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Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]

Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]

$9,990.00
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Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]

Unison Research

Country of origin: Italy

Unison Research S6 Black Edition - Pure Class A Tube Amplification - [ex-demo]
$9,990.00 $12,990.00
Save $3,000.00

Includes GST. 🚚 Free shipping on orders over $100 Australia wide at checkout.

Pure Class A with a push-pull EL34 output stage, delivering rich harmonics, velvety mids, and a holographic soundstage. Its all-black aesthetic complements a hand-wired, low-feedback circuit built with premium components for silent backgrounds and dynamic finesse. Crafted in Italy with meticulous attention to detail, it offers timeless tube warmth with refined control and expressive musicality.

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Colour:Black
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Every order ships free to any address in Australia via fully tracked, insured delivery. You will receive a tracking link once ur order is dispatched so you can follow it the whole way. Estimated delivery is 1-4 business days.

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Description

S6 Black Edition

The S6 Black Edition amplifier is able to meet the needs of the most demanding users, featuring.

To improve the S6 we worked on its strengths and we went even further to achieve higher sound quality.

The circuitry has been revised in the signal path and power management, again surpassing the milestones already achieved in the S6. Power output is now 40W, 15% more than the standard model. The polarisation of the power output valves has been completely revised to eliminate the capacitor and cathode resistor.
The input selection circuit has been implemented using the same technology designed for our most valuable equipment and extreme care has been taken in the design of the ground paths and channel separation. The valuable audio signal, where possible, travels protected in high-quality coaxial cables.
All the new Black Edition series are equipped with 3 digital inputs USB,SPDIF and Toslink.

Key Features

  • Pure Class A Operation
    Produces a warm, natural sound with incredible midrange presence and emotional impact.

  • 6 x EL34 Valves
    Generates 35W per channel of tube-driven magic—ideal for efficient speakers and intimate listening spaces.

  • Upgraded Black Edition Design
    Elegant black finish with subtle detailing, premium internal wiring, and fine-tuned component selection for enhanced performance and longevity. equipped with 3 digital inputs USB, SPDIF and Toslink.

  • Handcrafted in Italy
    Every S6 is meticulously built in Treviso by Unison Research’s skilled artisans, combining old-world craftsmanship with modern electrical precision.

  • Simple Yet Sophisticated
    Minimalist front panel with intuitive controls and a user-friendly layout, allowing music to take centre stage.

Why Choose the S6 Black Edition?

The Unison Research S6 Black Edition is ideal for audiophiles seeking tube magic with modern reliability. Its rich tonal character, dynamic soundstage, and refined presentation make it a standout in any serious HiFi system.

Paired with high-efficiency loudspeakers, the S6 brings out emotional detail, delicate textures, and tonal authenticity that solid-state amplifiers often struggle to reproduce.

Tech Specs
Output Power 40 W on 6 Ω
Signal Valves 2 × ECC83 Gold Lion
Output Power Valves 3 × KT77 Gold Lion in parallel per channel
Input Selector Relay Input Selector with Return GND Technology
Bias/Topology Cathode Capacitor Less (CCL), no autobias; Bias adjustable per power valve
Noise As noiseless as a solid-state amplifier
Operation Class Pure Class A, ultralinear, 20% tap
Inputs 4× RCA line, 1× USB, 1× SPDIF, 1× Toslink
Outputs 1× subwoofer RCA (stereo)
Bandwidth (−1 dB) 15 Hz – 30 kHz
Dimensions (W × D × H) 35 × 49 × 22 cm
Weight 25 kg
Customer Reviews

User Reviews

Warranty Information
warranty shield 2 Years Limited & 3 Months on Tubes Warranty

We care about your experience with HeyNow Hi-Fi, and we’re here to make the warranty process as smooth as possible.

Your warranty is handled directly by the Australian importer. By submitting this form, we’ll coordinate the process for you and keep you updated every step of the way. Important: Shipping fees are not included as part of your warranty coverage.

If your HeyNow Hi-Fi purchase isn’t working as it should, click here to lodge a warranty claim.

Should you have any questions, feel free to contact us https://www.heynowhifi.com.au//pages/contact

Why Choose Unison Research

Unison Research is one of Italy’s most respected amplifier manufacturers, renowned for combining handcrafted Italian construction, elegant industrial design, and deeply musical amplifier performance. Designed and manufactured entirely in Italy, Unison Research products blend traditional analogue amplifier philosophy with modern usability and refinement, creating systems that feel both emotionally engaging and beautifully engineered.

What makes Unison Research particularly distinctive is the company’s ability to combine valve warmth and musicality with real-world usability and speaker compatibility. Across both the valve and hybrid ranges, the amplifiers are designed to deliver tonal richness, dimensionality, and natural musical flow while still maintaining strong dynamics, control, and everyday practicality.

At HeyNow Hi-Fi, Unison Research products stand apart for their ability to create systems that feel inviting, tactile, and genuinely enjoyable to live with over long periods of ownership.

Signature Design and Sound

Manufactured in Italy, Unison Research amplifiers are engineered around carefully refined analogue circuits, substantial linear power supplies, premium transformer implementation, and beautifully executed cabinetry combining timber, alloy, and polished metal finishes.

The current Unico range has become particularly successful through its hybrid amplifier architecture, combining valve input stages with solid-state output sections to deliver much of the warmth, spaciousness, and tonal texture associated with valve amplification together with the current delivery and loudspeaker control of solid-state designs. Products such as the Unico Due provide substantial power and versatility while maintaining a highly natural and engaging musical presentation.

For listeners seeking a more traditional valve amplifier experience, models such as the S6 continue Unison Research’s focus on tonal beauty, dimensional realism, and effortless musical flow. The S6 in particular combines strong dynamic capability with remarkably organic vocal presentation and expansive sound staging, making it especially captivating with acoustic recordings, vocals, jazz, and analogue playback systems.

The introduction of the newer black finish models has also given the range a more contemporary visual presentation while preserving the distinctive Italian styling and handcrafted character that defines the brand.

Sonically, Unison Research amplifiers are known for their warmth, openness, and emotionally engaging presentation. Instruments and vocals carry convincing body and harmonic richness, while the soundstage feels spacious and immersive without becoming overly soft or romanticised.

Unison Research Product Range

The Unison Research range available through HeyNow Hi-Fi includes hybrid integrated amplifiers, valve amplifiers, DACs, CD players, and analogue-focused electronics designed for listeners seeking a more organic and musically immersive Hi-Fi experience.

Products including the Unico Due and S6 showcase the company’s ability to combine handcrafted Italian construction, premium analogue engineering, and highly engaging musical performance across both hybrid and traditional valve amplifier platforms.

At HeyNow Hi-Fi, Geoff and his experienced analogue and system setup team provide assistance with amplifier matching, speaker pairing, analogue integration, and complete system optimisation to ensure Unison Research products perform at their full capability within each customer’s listening environment.

Explore the Unison Research range:

CD Players

Phono Pre-Amplifiers

Integrated Amplifiers

Valve Amplifiers

Hybrid Integrated Amplifiers

Explore Unison Research

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Whether you're starting from scratch, refining your set up, or upgrading your gear, Geoff is always happy to have a chat. Call or book a private consultation directly with Geoff today.

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