Academy Audio Hi-End MUSES Podręcznik użytkownika - Strona 2
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1. Introduction
Thank you for purchasing the Hi-End MUSES® Electronic Volume Control Board from Academy Audio Inc.
The Hi-End MUSES® Electronic Volume Control board is a complete ready to use two channel volume
control unit that requires a power supply and control signals to operate.
The unit is built using a unique NJR MUSES®72320 volume control chip. Unlike other electronic volume
control chips, this chip does not include any active circuitry, and therefore provides vanishingly low level
of noise and distortions.
The high quality output opamp is installed in a socket, and may be replaced by any dual JFET opamp
with the standard pinout. The bipolar type opamps can also be used with a few extra components
placed in the provided footprints. The board also features extra footprints for single opamps , and dual
ones with just one section used. The board can be used with an outboard amplifier/buffer section or
without any active amplifier/buffer.
A high quality MUTE relay is provided to eliminate any unwanted noises from power-up/power-down
processes.
2. Mechanical Installation
Digital GND
+5V
R Input
L Input
-Vee, -18V max
Control Signals
Connector
+Vcc, +18V max
Analog GND
Figure 1. Volume Control Board Connections.
Page 2 of 5
MCU Board
Connector
Total assembly height is 1.00".
Ø0.150"
4 holes
R Output
L Output