Primare I25 Prisma integrated amplifier

Integrated amplifiers
Primare I25 Prisma

Finally, we come to comparing the I25 Prisma with the base I35. The I35 is better sounding, but in many cases, ‘better’ just means ‘more power and control’. Comparing the two side-by-side, the I25 is slightly thinner sounding and the I35’s even greater capacity for ‘oomph’ wins out. But, it’s a close-run thing, and in the context of smaller loudspeakers played at normal listening levels, the differences get a bit nuanced. Ultimately, if I had £3,200 burning a hole in my pocket and only £3,200, I’d go with the I25 Prisma over the base I35. If I knew that £3,200 could grow into a full I35, I’d go for the bigger model. The interesting part about Prisma is if that growth was not immediate, I’d go with the Prisma-equipped I25 over its bigger brother. That’s how important Prisma is, and with that comes the ticking off the last box.

Make no mistake, 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!


Type: Integrated amplifier with optional internal streamer and DAC

Power output: 2 × 100W into 8 Ohms, 2x 200W into 4 Ohms

Analogue Inputs: 5 × unbalanced (RCA) stereo inputs

Digital inputs: 2x RCA digital inputs, 4x Toslink (up to 24/192), 1x USB A, 1x USB-B up to 768kHz/32 bit; DSD 256/11.2MHz, 2x Ethernet RJ45, 2x WiFi antennas

Line level Output: 2 × unbalanced variable (RCA)

Digital output: 1x RCA

Multiroom connectivity: IR 3.5mm jack, 12v 3.5mm jack, RS232

Prisma’s Audio formats supported: WAV, LPCM, AIFF, FLAC, ALAC, WMA, OGG: Up to 192kHz/24bit MP3, MP4 (AAC): Up to 48kHz/16bits, VBR & CBR 320kbps, DSD: Up to DSD128 (5.6MHz) 

Streaming: Airplay, Bluetooth, Chromecast built-in, Spotify Connect, DLNA/UPnP 

Frequency response: 20Hz–20kHz -0.2dB

Signal-to-noise ratio: > 100dB

THD+N: < 0.05%, 20Hz–20kHz, 10W at 8Ω 

Finish: black or titanium

Dimensions (H×W×D): 10.6 × 43 × 42cm 

Weight: 11kg 

Price: £3,200

Manufactured by: Primare AB


Distributed in the UK by: Karma AV


Tel: +44(0)1423 358 846

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