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Primare I15 Prisma vs Primare I25 Prisma
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Primare I15 Prisma

Integrated Amplifier | 60 watts RMS into 8-ohms

Primare I15 Prisma
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Primare I25 Prisma

Integrated Amplifier | 100 watts RMS into 8-ohms

Primare I25 Prisma
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Primare I15 Prisma Primare I15 Prisma
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Primare I25 Prisma Primare I25 Prisma
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Primare I15 Prisma
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Primare I25 Prisma
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Primare I15 Prisma vs Primare I25 Prisma Integrated Amplifier Comparison

In this review, we will be comparing I15 Prisma and I25 Prisma, two Integrated Amplifiers by Primare. Let's have a brief look at the main features of Primare I15 Prisma and Primare I25 Prisma first before getting into our more detailed comparison.

Primare I15 Prisma Key Specs

  • 60 watts RMS into 8-ohms
  • Built-in DAC
  • USB Input
  • Bluetooth
  • Weight: 14.30 lbs / 6.50 kg
  • Dimensions (H x W x D):2-7/8inch x 13-7/8inch x 15-7/16inch

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

What size room are the Primare I15 Prisma and Primare I25 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 I15 Prisma Primare I25 Prisma
Near-field Average Poor
Small Room Good Poor
Mid-size Room Average Good
Large Room Poor Good
Very Large Room Bad Average

I15 Prisma and I25 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 I15 Prisma and Primare I25 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 I15 Prisma over Primare I25 Prisma
MSRP Price(*) 2,195USD vs 4,495USD costs less (*prices may change depending on the seller, location and time)
Minimum Impedance 4 ohms vs N/A ohms Compatible with 4-ohms speakers
USB Input Yes vs --- Connect Sources via USB
Base Surface Area 1387.3cm2/ 215.0inch2 vs 1969.9cm2/ 305.3inch2 takes less space in your room
Height 74mm vs 108mm Easier to fit in smaller spaces

Reasons to choose Primare I25 Prisma over Primare I15 Prisma
Watts into 8-ohms 100 watts vs 60 watts Delivers higher power into 8-ohms speakers
Watts into 4-ohms 200 watts vs 100 watts Delivers higher power into 4-ohms speakers
Total Harmonic Distortion (THD) 0.01% vs 0.05% Less Harmonic Distortion
Signal to Noise Ratio 100 dB vs 97 dB Higher ratings results in cleaner sound
Total Analog Inputs 5 vs 1 More options for connecting Analog sources
Optical Digital Inputs 4 vs 3 More options for connecting Digital sources
Coaxial Digital Inputs 2 vs 1 More options for connecting Digital sources

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 I15 Prisma and Primare I25 Prisma differs from each other.

Primare I15 Prisma Inputs
  • Total Number of Analog Inputs: 1
  • 3 Optical Digital Input
  • 1 Coaxial Digital Input
  • USB Input:
    • USB-A (connect to a USB Mass Storage Class)
    • USB-B (connect to your computer for playback)
  • Ethernet Port
Primare I25 Prisma Inputs
  • Total Number of Analog Inputs: 5
  • 4 Optical Digital Input
  • 2 Coaxial Digital Input
  • Ethernet Port
Primare I15 Prisma Back View
Primare I15 Prisma Back View (Click the image for the larger version)

Outputs
  • Stereo RCA Preamp Outputs
Outputs
  • Stereo RCA (2) Preamp Outputs
Primare I25 Prisma Back View
Primare I25 Prisma Back View (Click the image for the larger version)

What's in the Box of Primare I15 Prisma?

Here are the items that are included inside the box of I15 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 I25 Prisma?

    Here are the items that come with the 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
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