Audio Note M3 Line Pre-amplifier

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M3 Line

Owner’s Information

The M3 Line is a Level 3 line pre-amplifier, developed

for the best possible sonic performance rather than

technical specifications. To this end, the M3 Line

incorporates thermionic valve technology to produce the

most accurate sound possible and has been brought to

maturity through a development process we call

comparison by contrast, which is currently unique to

Audio Note. The article from which this technique is

based, named ‘Audio Hell’, is available from Audio

Note by request.

Please read this manual carefully in order to obtain the

best possible performance from your pre-amplifier.

Audio Note wishes you many happy years of listening

pleasure.

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Summary

M3 Line Owners Information

Technology Overview

Audio Note Design Philosophy

Discusses single-ended, zero feedback circuit topology for maximum linearity and minimal distortion.

Unpacking and Installation Guide

Instructions for safe unpacking, selecting a suitable location, and ensuring proper ventilation.

Connections and Setup

Input and Output Options

Details on available unbalanced, tape, and balanced line inputs and outputs.

Grounding and Power Connection

Guidance on using the ground post to eliminate hum and connecting the mains power supply.

Operating the M3 Line

Powering On and Usage

Steps for powering the unit on/off, warm-up time, input selection, and volume/balance control.

Cleaning and Maintenance

Recommended methods for cleaning the pre-amplifier using soft materials.

Valve Replacement and Lifespan

Information on replacing vacuum tubes, sourcing new ones, and their expected operational life.

Warranty and Servicing

Product Specifications

Customer Support Contact

Safety Information

Heat and Temperature Hazards

Product generates high heat from tubes, requires ventilation. High temperatures require keeping out of reach of children.

Environmental Precautions

Avoid high humidity, liquid exposure, and ensure the unit is properly earthed.

Electrical Shock and Component Safety

Lethal voltages. Do not remove cover. Fuses must be replaced by qualified technicians with correct types.