I15 Prisma MK2 Integrated Amplifier User Guide

Additional information

These instructions help you get the best possible sound from your I15 Prisma MK2.


The phase of the AC supply can make a significant difference to the sound.

Use the Polarity Pen supplied with the I15 Prisma MK2 to verify which pin is live on your AC power cable.

Ensure that the live pin of the AC power cable is connected to the left-hand pin of the power connector, viewed from the back panel:


Your Primare will start to sound best after an initial burn-in of approximately 24 hours.

You will notice a further smaller improvement in sound quality for at least another 3 days’ playing.

RS232 and trigger

The RS232 input allows you to connect the I15 Prisma MK2 to a controller system. Use a twisted (null modem) cable. For more information contact Primare at info@primare.net or visit www.primare.net.

The Trigger output allows the I15 Prisma MK2 to switch on other devices, such as a DD15.

Using the I15 Prisma MK2 with a DD15

Your I15 Prisma MK2 is an ideal companion to the Primare DD15 CD Transport. For best results link the two products together as follows using the two cables supplied with the I15:

To connect the trigger cable

The Trigger cable ensures that the DD15 switches on, or to standby, when you operate the  button on the front panel of the I15 Prisma MK2.

  • Connect the Trigger cable from the I15 Prisma MK2 TRIG OUT to the DD15 TRIG IN.

Error messages

The following error messages on the front panel display indicate an error condition:


Try the following

  • Power off I15 Prisma MK2 and disconnect the speaker connections.

If this solves the problem, check the speaker wiring.

If the problem persists

  • Power off the I15 Prisma MK2 and disconnect all input connections.

If this solves the problem, there is a DC offset on one of the inputs.

If the problem persists

  • Contact your dealer for service arrangements.


Indicates that the amplifier is overheated.

  • Turn off the I15 Prisma MK2 and let it rest for a few minutes.
  • Ensure that there is adequate ventilation around the I15.

Factory reset

Press and hold the standby button on the front panel to display the main firmware version number.

Press and hold the standby button on the front panel for 10 seconds to perform a factory reset of the I15 Prisma MK2.

You can also do a factory reset from the Prisma app, or from the GENERAL SETTINGS menu; see General settings.

Network troubleshooting

Front panel display

The front panel display indicates the type of network connection:

LAN indicates that you are connected by an Ethernet cable.

WiFi indicates that you are connected by wireless. 

Network status

The CON indicator on the back panel indicates the network status:

ON Indicates the I15 Prisma MK2 is connected to a network

OFF Indicates no connection to a network

Flashing indicates that the network needs to be configured using the Google Home app.

Spotify Connect

The Spotify Software is subject to third party licenses found here: 



Printing or saving as PDF

You can print an on-line Primare user guide from your web browser, to provide you with a permanent copy to refer to away from your computer.

Alternatively, you can save a user guide as PDF files, to refer to when are you not connected to the internet.

To do so, simply choose Print, or Print followed by Save as PDF, from your browser’s File menu.

For the specific procedure for each of the most popular web browsers see How do I print or save a PDF copy of the on-user guides?.


You can use Google Translate to translate the contents of the Primare website. To do that, select the language you would like to translate into in the list below.

Please bear in mind, since the Google Translate is an automatically generated translation, we do not take any responsibility for errors in the text.