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Primare I25 Prisma vs Primare I35 Prisma
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Primare I25 Prisma

Integrated Amplifier | 100 watts RMS into 8-ohms

Primare I25 Prisma
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Primare I35 Prisma

Integrated Amplifier | 150 watts RMS into 8-ohms

Primare I35 Prisma
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Primare I25 Prisma Primare I25 Prisma
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Primare I35 Prisma Primare I35 Prisma
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Primare I25 Prisma
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Primare I35 Prisma
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Primare I25 Prisma vs Primare I35 Prisma Integrated Amplifier Comparison

In this review, we will be comparing I25 Prisma and I35 Prisma, two Integrated Amplifiers by Primare. Let's have a brief look at the main features of Primare I25 Prisma and Primare I35 Prisma first before getting into our more detailed comparison.

Primare I25 Prisma Key Specs

  • 100 watts RMS into 8-ohms
  • Built-in DAC
  • Bluetooth
  • Weight: 24.20 lbs / 11.00 kg
  • Dimensions (H x W x D):4-1/4inch x 17inch x 17-15/16inch

Primare I35 Prisma Key Specs

  • 150 watts RMS into 8-ohms
  • Built-in DAC
  • USB Input
  • Bluetooth
  • Weight: 24.20 lbs / 11.00 kg
  • Dimensions (H x W x D):4-3/16inch x 17inch x 17-15/16inch

What size room are the Primare I25 Prisma and Primare I35 Prisma Amplifiers good for?

The size of the room in which you are planning to use these amplifiers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their max power parameters:

Listening Environment Primare I25 Prisma Primare I35 Prisma
Near-field Poor Are you nuts?
Small Room Poor Bad
Mid-size Room Good Poor
Large Room Good Good
Very Large Room Average Good

I25 Prisma and I35 Prisma are members of Primare's I series of speakers. Below you can find the loudspeakers from this series.

Primare I Series History
Model Watts RMS (8-ohms) Minimum Impedance Built-in DAC
Primare I15
  
60 wattsN/A-ohmsNo
Primare I35 Prisma
150 wattsN/A-ohmsYes
Primare I15 Prisma
  
60 watts4-ohmsYes
Primare I25
  
100 wattsN/A-ohmsNo
Primare I35
  
150 wattsN/A-ohmsNo
Primare I25 Prisma
100 wattsN/A-ohmsYes
Primare I15 MM
  
60 wattsN/A-ohmsNo

In the following sections, we will get into more detail in order to understand how Primare I25 Prisma and Primare I35 Prisma compares and end up with enough arguments to decide which one of these amplifiers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Reasons to choose Primare I25 Prisma over Primare I35 Prisma
MSRP Price(*) 4,495USD vs 5,795USD costs less (*prices may change depending on the seller, location and time)

Reasons to choose Primare I35 Prisma over Primare I25 Prisma
Watts into 8-ohms 150 watts vs 100 watts Delivers higher power into 8-ohms speakers
Watts into 4-ohms 300 watts vs 200 watts Delivers higher power into 4-ohms speakers
USB Input Yes vs --- Connect Sources via USB
Height 107mm vs 108mm Easier to fit in smaller spaces

Inputs and Outputs

The input and output selections that are offered is an important factor when comparing two amplifiers. Here you can find how the I/O selections of the Primare I25 Prisma and Primare I35 Prisma differs from each other.

Primare I25 Prisma Inputs
  • Total Number of Analog Inputs: 5
  • 4 Optical Digital Input
  • 2 Coaxial Digital Input
  • Ethernet Port
Primare I35 Prisma Inputs
  • Total Number of Analog Inputs: 5
  • 4 Optical Digital Input
  • 2 Coaxial Digital Input
  • USB Input:
    • USB-A (connect to a USB Mass Storage Class)
    • USB-B (connect to your computer for playback)
  • Ethernet Port
  • XLR Input Port
Primare I25 Prisma Back View
Primare I25 Prisma Back View (Click the image for the larger version)

Outputs
  • Stereo RCA (2) Preamp Outputs
Outputs
  • Stereo RCA Preamp Outputs
Primare I35 Prisma Back View
Primare I35 Prisma Back View (Click the image for the larger version)

What's in the Box of Primare I25 Prisma?

Here are the items that are included inside the box of I25 Prisma:
  • Integrated amplifier
  • 6-feet AC power cord
  • Remote control (C25)
  • 2 AAA batteries
  • 2 Bluetooth/WiFi antennas
  • Two 59-inch Mono-minijack cables
  • AC polarity pen
  • Thank You Letter
  • Safety And Warning Notification
  • What's in the Box of Primare I35 Prisma?

    Here are the items that come with the I35 Prisma:
  • Integrated amplifier
  • 6-feet AC power cord
  • Remote control (C25)
  • 2 AAA batteries
  • 2 Bluetooth/WiFi antennas
  • Two 59-inch Mono-minijack cables
  • AC polarity pen
  • Thank You Letter
  • Safety And Warning Notification
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