
Instructions for use
Thank you for purchasing the Musical Fidelity M5si integrated amplifier.
The M5si uses our tried and tested ultra low distortion power amplifier circuitry, which has enough current
reserve to drive even the most demanding speakers with ease. A very low noise and distortion, high-quality
preamplifier completes the integrated amplifier giving a perfect sound from a compact looking full size unit.
The M5si features a low noise phono stage to allow direct connection of a turntable for vinyl listening.
An asynchronous USB input has also been included which will connect to computer based home audio and
allow full quality playback of digital media, up to and including 24 bits, 96kHz sampling rate.
The M5si will aesthetically match with any future M5s as well as current M3s and M6s series products. Such
combinations will yield one of the best high-fidelity systems available at any price.
Used properly and carefully, it should give many years of outstanding musical reproduction.
Dust regularly with a soft duster or soft brush, but be careful when using cleaning or polishing agents - they
may harm the surface finish.
If there are any questions about the audio system, please consult the dealer who is there to help and advise.

M5si manual issue 1 Page 2 of 13

– Mains plug (UK only), modification warning
– Installation precautions
– Introduction, cleaning, installation, power connections, audio
connections
Facilities and connections
– Illustrations, main unit front & rear panels
– Operation and illustration
– Starting
– Volume
– Mute
– CD
– USB
– PHONO
– TUNER
– AUX1/HT
– AUX2
– Computer setting for USB
– PC and MAC users
– For best results with USB
Manual history
Item disposal information
Section Page
M5si manual issue 1 Page 3 of 13

IMPORTANT! (U.K. only)
This unit is supplied in the U.K. with mains lead fitted with a moulded 13 amp plug. If, for any reason, it is
necessary to remove the plug, please remove the fuse holder and dispose of the plug safely, out of reach of
children.
It must not be plugged into a mains outlet.
The wires in the mains lead supplied with this appliance are coloured in accordance with the following code:
Green and yellow ............................. Earth
Blue ................................................ Neutral
Brown .................................................. Live
WARNING – This appliance MUST be earthed
As the colours of the wires of the mains lead of this appliance may not correspond with the coloured markings
identifying the terminals in the plug, proceed as follows:
• The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked
with the letter E or coloured green or green-and-yellow, or by the earth symbol:
• The wire which is coloured brown must be connected to the terminal which is marked with the letter L or
coloured red.
• The wire which is coloured blue must be connected to the terminal which is marked with the letter N or
coloured black.
• If connecting to a BS1363 plug, a 13 amp fuse must be used.
WARNING:
ANY MODIFICATIONS TO THIS PRODUCT NOT EXPRESSLY
APPROVED BY MUSICAL FIDELITY WHO IS THE PARTY RESPONSIBLE
FOR STANDARDS COMPLIANCE COULD VOID THE USER'S
AUTHORITY TO OPERATE THIS EQUIPMENT.
M5si manual issue 1 Page 4 of 13