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Unison Research S6 Integrated Valve Amplifier

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Unison Research S6 Integrated Valve Amplifier

Unison Research

Country of origin: Italy

Unison Research S6 Integrated Valve Amplifier
SKU: UR-S6-INT-CH
$9,000.00

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

Employs a push-pull EL34 output stage to deliver a balanced blend of warmth, clarity, and dynamic expression. Hand-wired with premium components and a low-feedback topology, it offers a spacious soundstage with natural tonal richness. Crafted in Italy with meticulous attention to detail, it pairs vintage-inspired musicality with reliable, modern performance.

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

We handle your warranty so you don’t have to. If something isn’t right, simply get in touch and we will coordinate directly with the Australian importer on your behalf. Find out more. click here to lodge a warranty claim.

Whether you’re browsing or already unboxing, Geoff is your friendly hi-fi guide available 7 days a week. From choosing the right system to setting up your new purchase, expert advice is always within reach. Contact Geoff today.

Price is important, but building the right system synergy is equally so. If you’ve found a better price on one of our products or listings, simply get in touch with Geoff. Don’t let price stand in the way of working with HeyNow Hi-Fi to find the right result for your system.
Description

S6

The Unison S6 integrated amplifier offers personality, refinement and aesthetics…and a totally new amplifier design from a mechanical standpoint. The latest version of our S6 has been steadily updated and improved over the years to the point where it is easily one of the most respected integrated amplifiers in the world. The contrasting highlights of the wooden inlays on the front panel also reveal the technical sophistication of this amplifier, emphasizing the pride of ownership that comes with the term “Made in Italy.”

Key Features:

  • Single-ended Class A integrated valve amplifier
  • Switchable bias
  • Hand built in Italy
  • 30/35W output per channel
  • 5 Line inputs
  • Protective Cages included
  • RC2 remote included
Tech Specs
Type: Stereo Integrated Valve Amplifier
Output Stage: Single-Ended Parallel, Ultra-Linear A Class
Output Power (per-channel): 30/35W
Output Impedance: 6Ω 
Input Impedance: 47kΩ / 50pF
Frequency Response: 20Hz - 50kHz
Valves:  6x EL34 
Power Consumption: 265VA max
Inputs: 5x Line
Outputs:  1x Tape
Loudspeaker
Dimensions: 35 x 21 x 49 cm
Net Weight: 25kg
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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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At HeyNow Hi-Fi, it's not just about the gear - it's about how it all comes together. With over 30 years of experience, Geoff provides personalised, expert advice to help you build a system that suits your music, your space, and listening style.

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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