Introduction; W E L C O M E T O T H E A 3 2 A M P L I F I E R - Primare A32 User Manual

Introduction

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Welcome to the Primare A32 Amplifier! This chapter introduces you to its key
features, and explains how you can take advantage of its impressive power
handling and superb sound in your system.

W E L C O M E T O T H E A 3 2 A M P L I F I E R

The A32 is a high-power fully-balanced power amplifier which combines
no-compromise analogue design, for supremely low noise and distortion, with
sophisticated digital control and monitoring, for dependable operation even at
continuous high power levels.
Fully balanced design
The A32 uses a fully balanced design. This means that the input signal is
supplied on two signal lines which carry the same signal with opposite phase.
These lines are combined at the power amplifier so that any interference or
noise is cancelled out, leaving only the pure original signal.
Generous power handling
The A32 is capable of delivering 250 Watts into 8Ω. It uses 16 Toshiba
output devices for each channel, working in a high-bias class AB
configuration, to ensure high reliability and performance.
The amplifier is powered by a massive 2000VA toroidal transformer with
separate windings for each channel, for minimal crosstalk, and generous
smoothing capacitors ensure that there is more than enough power for even the
deepest transient.
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Comprehensive protection
The A32 is fully protected against overheating, shorted speaker terminals, and
DC leakage.
If the temperature of the A32 exceeds 70°C, the amplifier automatically enters
a standby mode, with the Standby indicator on the front panel flashing rapidly
to indicate overheating, until the temperature falls back to a safe level to
protect the components from potential damage.
In addition, the outputs are automatically protected against DC offset, and
fuses protect the A32 from damage due to accidental shorting of the speaker
cables.
Any abnormal condition or faulty input signal will automatically flash the
Standby indicator and disengage the speakers.
Remote power on/off
For convenience the A32 can be powered on and off via a remote trigger
input, or RS232 cable, avoiding the need to switch it on or off separately from
the preamplifier in the system.
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