REGA Fono MM - Amplifier Manual

Introduction

The Fono MM has been designed to be effective, easy to use, and above all, to reproduce music. The Fono MM uses a fully discrete, cascaded, complementary amplifier input stage. This configuration has been proven to work well with moving magnet cartridges. The RIAA equalization has been split into two stages to minimise interaction. Polyester capacitors have been used in the signal path and polypropylene capacitors are used in the RIAA equalization circuits.
The aesthetic design of the Fono MM was as important as the quality of its electrical capabilities, so it benefits from the same aluminium case as the Rega TTPSU and Fono MC amplifier, giving it a design which offers a familiar feel and moreover brings it in line with its illustrious bigger brothers.
The Fono disk stage is designed to amplify the signal from a moving magnet cartridge to a level which can feed into a 200mV line level input on a standard hi-fi amplifier.

Powering up

The Fono MM is turned on by pressing the on-off button located on the front, when the unit is active the Rega logo will glow RED.

We advise you to turn the Fono on first followed by the amplifier. This is because the power surge in the Fono could cause an audible power on "thump" which may distress the speakers.

Method of connection

INPUT
Connect the tonearm leads and earth (if used) to the input socket and to the earth terminal on the back of the Fono.

Turntable Earth
If the turntable or tonearm has a separate signal earth connection this should be connected to the turntable earth terminal on the back of the unit.

OUTPUT
Connect the output socket of the Fono to the line input on the amplifier.
Please note: If you have an integrated amplifier with built in phono stage, DO NOT connect the Fono to this input.

POWER SUPPLY
Connect the Rega PS1 to the AC socket on the Fono back panel.

Overview

Specifications

Input sensitivity = 1.7mV for 200mV output
Input loading = 47KΩ in parallel with 100pF
Maximum input level = 60mV at 1KHz
Gain = 41.4dB at 1KHz
Output impedance = 200Ω
Recommended minimum output load resistance = 5KΩ
Frequency response (50KΩ output load) = 15Hz (-3dB) to 100KHz (-0.2dB)
RIAA accuracy (50KΩ output load) = better than +/-0.2dB 100Hz to 100KHz
Power requirements = 24V AC at 80mA maximum. Only to be used with Rega PS1.

PS1 (UK)
Input: 230V ~ 50Hz 0.07A
Output: 24V ~ 350MA AC
PS1 (EU - Euro 2 pin)
Input: 230V ~ 50Hz 0.07A
Output: 24V ~ 350MA AC
PS1 (UL - American)
Input: 115-120V ~ 60Hz
Output: 24V ~ 350MA AC
The Rega PS1 and Fono MM amplifier is a class II apparatus.

Use only with the Rega PS1 power supply. Never expose the unit to rain or moisture. Do not open the case covers. There are no user serviceable parts inside.