Musical Fidelity M3si User Manual

Instructions for use
Thank you for purchasing the Musical Fidelity M3si integrated amplifier.
The M3si 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 M3 now features two new inputs for further versatility.
A low noise phono stage has been added 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 M3si will aesthetically match with present and future M3 and M3s series products. Such a combination 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.

Musical Fidelity M3si Specifications

General

Power Output	85 Watts per channel into 8 Ohms
Frequency Response	+0, –0.1dB, 10Hz to 20kHz
Weight	9.2 kg
Input Impedance	40k Ohms
Total Harmonic Distortion	<0.014 %
Signal-to-Noise Ratio	>96dB 'A'-weighted
Inputs	4 x RCA
Outputs	1 x RCA
Dimensions	440 x 100 x 400 mm

Summary

Instructions for Use

M3si Amplifier Features Overview

Introduction to the M3si integrated amplifier's key features, including power circuitry and new inputs.

Safety Information

UK Mains Plug and Earthing Requirements

Details on the UK mains plug, wiring colours, and the mandatory earthing requirement for safe operation.

Warning on Product Modifications

Caution against unauthorized modifications to the product, which could void user authority and warranty.

General Advice and Precautions

Usage Precautions and Environmental Care

Guidelines on connecting, positioning near water/heat, and cleaning the amplifier to ensure longevity.

Lightning Protection and Servicing

Advice on protecting the audio system from lightning and instructions for seeking after-sales service.

Installation and Connections

Cleaning, Placement, and Humidity Control

Instructions for cleaning the unit, optimal placement, and managing humidity after temperature changes.

Connecting Power and Audio Sources

Details on connecting the power cable, various audio inputs (RCA, Phono, USB), and outputs (Line, Pre-Out).

Facilities and Connections Diagram

Front Panel Controls and Indicators

Identification and function of front panel buttons, volume control, and input LEDs.

Rear Panel Input and Output Terminals

Detailed labelling of all rear panel connectors for speakers, audio inputs, USB, and power.

Remote Control Handset

Remote Control Operation Guide

Explanation of remote control buttons for CD player, amplifier functions, and input selection.

Amplifier Operation

Startup, Volume, and Muting

Guide to powering on the unit, adjusting volume, and using the mute function for audio output.

Selecting Audio Inputs

Instructions for selecting different audio sources like CD, USB, PHONO, TUNER, AUX1/HT, and AUX2.

USB Computer Connectivity

Configuring Computers for USB Playback

Steps for setting up PC and Mac systems to recognize and use the M3si for USB audio playback.

Optimizing USB Audio Performance

Tips for achieving the best sound quality via USB, including volume settings and avoiding USB bus interference.

Troubleshooting Guide

Resolving Power, Sound, and Hum Issues

Solutions for common problems such as no power, no sound, sound cutouts, and audio hum.

Fixing Connection and Remote Control Problems

Troubleshooting incorrect connections, USB not working, and remote control range or functionality issues.

Technical Specifications

Audio Output and Input Specifications

Detailed specifications for power output, THD+N, signal/noise ratio, input impedances, and frequency responses.

Power, Weight, Dimensions, and Accessories

Information on power requirements, consumption, unit weight, physical dimensions, and included accessories.

Item Disposal Information

Environmental Recycling Guidelines

Instructions for environmentally responsible disposal and recycling of the product.