The Primare I35 is a full-size modular integrated amplifier from Sweden's Primare 35 Series, delivering 150 watts per channel into 8 ohms and 300 watts into 4 ohms via Primare's UFPD 2 all-analogue Class D amplification technology. Two balanced XLR inputs and three RCA analogue inputs cover every analogue source a serious system is likely to include, while two internal expansion slots allow the DM36 digital-to-analogue converter module and SM35 Prisma network player module to be added at any time. The result is a genuinely future-proof platform: an amplifier that performs at a high level the day it arrives, with a clear and cost-effective path to full DAC and streaming capability whenever the listener is ready.
Primare's UFPD 2 technology is a fundamental reworking of the award-winning original UFPD platform, providing absolutely linear amplification across the entire audible bandwidth with a naturally fast, clean, and agile character. HiFi+ gave the I35 an Editor's Choice Award in 2020, noting it was tonally rich and satisfying yet energetic and dynamic at all times, and included it in the HiFi+ Top 100 list the following year. HiFi Musik Sweden described it as the most explosive and powerful-sounding amplifier in its price class, yet subtle and detailed with precision. The I35 was also part of the EISA Stereo System of the Year 2019-2020 when paired with the CD35 Prisma, confirming its standing as one of the most critically endorsed analogue amplifier platforms available at its price.
Key Features
- 150W per channel into 8 ohms; 300W into 4 ohms
- UFPD 2 all-analogue Class D amplification technology
- 2 x XLR balanced and 3 x RCA analogue inputs
- Modular design: accepts DM36 DAC and SM35 Prisma modules
- Dedicated RCA LINE and PRE outputs
- Home cinema surround passthrough mode
- C25 multi-product IR system remote included
- RS232 outboard control; 12V trigger; 3.5mm IR in/out
- Full-size chassis: 430 x 106 x 420mm; 11kg
- Available in black or titanium
- HiFi+ Editor's Choice Award 2020; HiFi+ Top 100; EISA Stereo System 2019-2020 (with CD35 Prisma)
Warranty:
1-year manufacturer's warranty
Why Consider the Primare I35
The I35 is the right choice for listeners who want a high-power analogue amplifier with balanced inputs today, and the option to add a world-class DAC and full streaming platform later. The UFPD 2 module delivers 150 watts of controlled, linear power into a wide range of speaker loads, and the balanced XLR inputs provide the cleaner signal path that larger systems and longer cable runs benefit from. HiFi+ described it as a product that never exhibited any "do not like it" characteristics across any combination of sources or speakers. With a DM36 module fitted, the I35 gains one of the most capable DAC stages available in an integrated amplifier at this price, and the SM35 Prisma module brings the full Prisma streaming platform including Roon Ready. For those building a 35 Series system, the I35 pairs naturally with the CD35 Prisma or DD35 transport and the A35.2 power amplifier via its PRE output.
Ideal for
- Listeners starting with a high-power analogue system and planning to add DAC and streaming later
- Systems requiring balanced XLR inputs for cleaner signal transmission
- Demanding speaker loads that benefit from 150W of sustained, linear UFPD 2 power
- Those building a Primare 35 Series system with CD35 Prisma, DD35, or A35.2
- Home cinema setups using the surround passthrough input
- Installations requiring RS232, 12V trigger, and IR in/out system control
What's in the Box
- Primare I35 Modular Integrated Amplifier
- C25 IR Remote Control
- Power Cable
- Quick Start Guide and Safety Documentation
Technical Specifications
| Specification |
Detail |
| Amplification |
| Output Power (8 ohm) |
2 x 150W |
| Output Power (4 ohm) |
2 x 300W |
| Amplifier Technology |
UFPD 2 all-analogue Class D |
| Analogue Inputs and Outputs |
| XLR Balanced Inputs |
2 x stereo pair |
| RCA Analogue Inputs |
3 x stereo pair |
| Analogue LINE Output (RCA) |
1 x stereo pair |
| Analogue PRE Output (RCA) |
1 x stereo pair |
| Home Cinema Passthrough |
Yes (surround sound input assignment) |
| Modular Expansion (Optional) |
| DAC Module Slot |
DM36 (PCM 384kHz/32-bit, DSD 256, MQA) — optional upgrade |
| Network Player Module Slot |
SM35 Prisma (AirPlay 2, Bluetooth, Chromecast, Spotify Connect, Roon Ready) — optional upgrade |
| Control and Integration |
| Remote Control |
C25 multi-product IR system remote |
| IR System Control |
3.5mm in/out |
| RS232 |
Outboard system control port |
| 12V Trigger |
3.5mm output |
| General |
| Dimensions (W x H x D) |
430 x 106 x 420 mm |
| Weight |
11 kg |
| Available Finishes |
Black / Titanium |
| Country of Manufacture |
Sweden |
| Awards |
HiFi+ Editor's Choice Award 2020; HiFi+ Top 100 2019; EISA Stereo System 2019-2020 (with CD35 Prisma); HiFi News Highly Commended 2019; Vietnam AV Magazine Editors' Choice 2021 |