Products like the Primare I25 Prisma are the best expression of why this is a golden age for audio. This one box does it all, and it does it all damn well!
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$750.00 off
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Primare I25 Modular Integrated Amplifier
Sale price
$2,849.00
Regular price
$3,599.00
Unit price
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Primare I25 Modular Integrated Amplifier
Sale priceFrom
$2,849.00
Regular price
$3,599.00
Unit price
The I25 is a modular integrated amplifier that blends Scandinavian design minimalism with high-end performance. Delivering 100 watts per channel through Primare’s UFPD 2 Class-D amplification, the I25 offers a transparent, fast, and refined sound across the entire audible bandwidth. Its modular design supports both an analog-only configuration and a fully equipped variant that includes the DM36 DAC and SM35 Prisma network player. This flexibility makes the I25 a versatile centerpiece for any two-channel system, equally suited for digital streaming, vinyl playback, or pure analog setups.
Key Features
- UFPD 2 Amplification: 100W per channel into 8 ohms using Primare’s proprietary Class-D topology for wide-bandwidth, low-distortion power delivery.
- Modular Design: Available as analog-only or with optional DM36 DAC and SM35 Prisma network streaming modules.
- Balanced and Unbalanced Inputs: Five analog stereo RCA inputs and a full set of pre-out and line-out connections.
- Fully Balanced Circuitry: Engineered for ultra-low noise and signal integrity.
- Refined Scandinavian Aesthetics: Brushed aluminum faceplate, tactile controls, and an intuitive user interface.
- Expandable Platform: Seamlessly integrates with other modular Primare components, including the I35, CD35, and DD35.
UFPD 2 Amplification: Clean Power, Complete Control
At the heart of the I25 is Primare’s UFPD 2 amplification technology, a thorough reengineering of its original UFPD platform. Designed as a fully analog Class-D amplifier, UFPD 2 delivers 100 watts per channel into 8 ohms (200W into 4 ohms) with exceptional speed, linearity, and bandwidth. This ensures tight bass control, an expansive soundstage, and dynamic accuracy even with demanding loudspeaker loads. The result is a presentation that feels both natural and authoritative—ideal for listeners seeking resolution without harshness.
Advanced Modular Technology for System Customization
The I25 offers remarkable flexibility thanks to its modular design. You can choose between the analog-only version or a variant equipped with both the DM36 DAC module and the SM35 Prisma network player, allowing you to tailor your system to your exact preferences from the start.
- DM36 DAC Module: A full-featured digital-to-analog converter stage supporting up to PCM 384kHz/32-bit and DSD 256, with optional upsampling and MQA decoding. With galvanically isolated USB, optical, AES/EBU, and SPDIF inputs, it ensures pristine digital playback. The DM36 also enables WiSA wireless speaker compatibility, a rare feature in high-performance integrated amplifiers.
- SM35 Prisma Module: This award-winning streaming and multi-room platform adds wireless connectivity via AirPlay 2, Bluetooth, Spotify Connect, Chromecast built-in, and Roon Ready* support. Stream directly from nearly any app, control playback via voice or the Prisma app, and enjoy seamless multi-room audio across your network.
This modular architecture not only future-proofs your system but allows seamless integration with other Primare components such as the DD35 or CD35. Whether you start with a fully equipped unit or expand later, the I25 adapts to your evolving audio setup with precision and versatility.
Scandinavian Craftsmanship: Form That Follows Function
Every Primare product reflects the Swedish concept of “lagom”—not too much, not too little. The I25’s minimalist design and thoughtful ergonomics make it an elegant fit for any listening space. Its signature control knob and intuitive layout ensure easy access to essential functions, while its solid chassis and internal architecture are built for long-term performance and low noise. Whether on display or tucked away in a rack, the I25 maintains a refined presence that matches its sonic abilities.
Primare I25 & I35 Integrated Amplifier Video
Primare's Terry Medalen explores the I25 and I35 modular integrated amplifier platforms, their UFPD 2 amplification technology, and how optional DM25 DAC and Prisma streaming modules let you customize the system to your needs.
Explore More Primare Products
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The Listening Room Difference
We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on trust, not hype. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection.
Specifications
| Amplification | UFPD 2, 2 x 100W @ 8 ohms / 2 x 200W @ 4 ohms |
| Analog Inputs | 5 x RCA stereo pairs |
| Analog Outputs | 1 x RCA stereo LINE out, 1 x RCA stereo PRE out |
| Remote Control | C25 IR remote |
| System Control Ports | IR (3.5 mm in/out), 12V Trigger (3.5 mm out), RS232 |
| DAC (with DM36 installed) | ESS ES9068A |
| Digital Inputs | 4 x Toslink, 2 x RCA SPDIF, 1 x USB-B |
| Digital Outputs | 1 x RCA SPDIF |
| Network (with SM35 Prisma installed) | 2 x Ethernet, WiFi |
| Wireless Streaming | AirPlay 2, Bluetooth, Chromecast built-in, Spotify Connect, Roon Ready*, MQA |
| Weight | 11 kg |
| Dimensions | 430 x 106 x 420 mm (W x H x D) |
| Finishes | Black or Titanium |
*Roon Ready support enabled via future software update
Something of a wonder box that marries the best of analogue and digital. The I25 is a straightforward 100W design furnished with Primare's own compact and cool-running second generation UFPD 2 Class D amplifier.
What is the difference between the Primare I25 and the I35?
What is the difference between the Primare I25 and the I35?
The I25 delivers 100 watts per channel and offers a modular design with optional DM36 DAC and SM35 Prisma streaming modules. The I35 steps up to 150 watts per channel with a fully balanced circuit design throughout. The I35 is the better choice for demanding speakers or listeners who want the highest performance, while the I25 offers excellent value with flexible upgrade options.
Is the Prisma streaming module as good as a dedicated streamer like the NP5?
Is the Prisma streaming module as good as a dedicated streamer like the NP5?
The SM35 Prisma module inside the I25 runs the same streaming platform and supports the same services as the dedicated NP5 Prisma MK2, including AirPlay 2, Chromecast, Spotify Connect, Tidal Connect, and Roon Ready. The NP5 has the advantage of a separate chassis with its own isolated power supply, which can reduce noise in very resolving systems. For most listeners, the internal module delivers identical functionality and sound quality while keeping the system simpler.
Does the Primare I25 have enough power for large speakers?
Does the Primare I25 have enough power for large speakers?
With 100 watts per channel using Primare's UFPD 2 Class D technology, the I25 handles most bookshelf and floorstanding speakers with ease. UFPD 2 amplification delivers high current capability relative to its wattage rating, so it drives difficult loads better than many competing amplifiers at similar power specs. For very large or insensitive speakers below 84dB, consider the 150-watt I35 instead.
Can I add streaming to the Primare I25 later?
Can I add streaming to the Primare I25 later?
Yes, the I25's modular design allows you to add Primare's SM35 Prisma streaming module at any time. The module installs internally and gives you access to AirPlay 2, Chromecast, Spotify Connect, Tidal Connect, Roon Ready, and Bluetooth. This makes the I25 a future-proof purchase since you can start with analog sources and add digital/streaming capabilities when you are ready.
Should I start with the I25 and upgrade later, or go straight to the I35?
Should I start with the I25 and upgrade later, or go straight to the I35?
The I25 at 100 watts per channel handles the vast majority of speakers and rooms beautifully, and its modular design means you can add the DM36 DAC and SM35 Prisma streaming modules over time. The I35 jumps to 150 watts with a fully balanced dual-mono circuit, which matters most if you have demanding speakers or prioritize the absolute best integrated performance Primare offers. If budget is a factor, starting with the I25 and adding modules later is a sound strategy since the amplifier section itself is excellent.
