Make an Offer

Unison Research Triode 25 Integrated Amplifier

Unison Research Triode 25 Integrated Amplifier

$7,600.00
$

Offer Submitted!

Thank you for your offer! We've received your submission and will review it shortly. We'll get back to you within 24 hours.
Unison Research Triode 25 Integrated Amplifier
Unison Research Triode 25 Integrated Amplifier
Unison Research Triode 25 Integrated Amplifier
Unison Research Triode 25 Integrated Amplifier
Unison Research Triode 25 Integrated Amplifier
Unison Research Triode 25 Integrated Amplifier

Unison Research

Country of origin: Italy

Unison Research Triode 25 Integrated Amplifier
SKU: UR-TRIODE-25-INT
$7,600.00

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

A pure triode KT88 output stage operating in single-ended Class A for lush, harmonically saturated sound. Its minimalist, low-feedback design emphasizes tonal purity and spatial coherence over raw power. Hand-built with point-to-point wiring and premium components, it delivers an intimate, expressive listening experience with seamless musical flow and analog warmth.

In stock
Colour:Cherry
Model:TRIODE 25 Only
Quantity:
We accept:
American Express Apple Pay Google Pay Mastercard PayPal Shop Pay Union Pay Visa Zip

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

Triode 25

Three amplifiers symbolize the success of Unison Research: the Simply Two, the Triode 20 and the legendary Absolute. On the occasion of the 25th anniversary of the birth of Unison Research, we pay homage to these historic devices by offering the Simply Two and the Absolute in a limited and numbered “Anniversary” edition. We’ve also decided to offer a completely new version of the Triode 20 and named it, quite appropriately, the Triode 25.

The new Triode amplifier 25 has experienced a long and painstaking design and testing period despite the considerable experience already gained in the construction of its predecessor, the Triode 20. The Triode 25 can operate in two modes: triode and pentode. The latter is capable of delivering a maximum power output of over 45 watts per channel with a load of 6 ohms with harmonic distortion extremely contained across the entire audio band.

Key Features:

  • Push-pull integrated valve amplifier
  • 32-bit, DSD-compatible USB input for streaming from a computer
  • Switchable Triode and Pentode modes
  • Premium design throughout
  • Locally sourced materials
  • Based on the long-standing Triode 20 design
  • EL34 tubes in the output stage
  • RC2 remote with black wood finish included
  • Premium Cherry Wood front panel (as standard, Black finish available to special order)
Tech Specs
Output Stage: Push-Pull, Ultralinear, Class-AB
Output Power (per-channel): 45W in Pentode mode
25W in Triode mode (approx.)
Output Impedance: 6O
Input Impedance: 47kO / 50pF
Negative Feedback: Switchable, 5dB or 1.8dB
Valves: 2 x ECC83 (12AX7)
1 x ECC82 (12AU7)
4 x EL34 (6CA7)
Power Consumption: 300W max.
Fuses: T3.15A (220 - 250V)
Dimensions (W x D x H): 30 x 45 x 20cm
Net Weight: 20kg
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

Featured Categories

AMPLIFIERS

Speakers

Turntables

CABLES

WHY CHOOSE HEYNOW HI-FI?

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.

GET IN TOUCH