Audica Microplus – 4 Channel Power Amplifier

The Audica Professional MICROplus is an ultra-compact 4-channel power amplifier with the same size and style of head-unit mounting as the MICROzone pre/amp/controller, which it is designed to partner. It delivers 4 x 80W into 4 Ohm per channel, 2 x 80W into 4 Ohm plus 1 x 160W bridged into 8 Ohm or 2 x 160W into 8 Ohm with twin channels bridged.

Features include 4-channel limiting and protection and individual channel bar indicators showing output level, clip and fault.

The unit has rear-mount level control, phono in/out and screw terminal loudspeaker outputs for each channel.

Being a straight gain amplifier, the MICROplus is designed to be used in conjunction with the MICROzone, which provides pre-amp functions and the equalization for the MICROseries loudspeakers.

Normal Mode (per channel):

Programme power output:

80W into 4 Ohms, 40W into 8 Ohms

Sine wave r.m.s. power output:

55W into 4 Ohms, 28W into 8 Ohms (restricted by limiter operation)

Peak power output:

160W into 4 Ohms, 80W into 8 Ohms

Gain:

-infinity to 28.2dB (adjustable on rear panel)

Frequency Response:

<10Hz to 35kHz (-3dB), less than 1dB down @ 20kHz

Signal to Noise ratio:

86dB (22Hz to 22kHz), 90dB (A-weighted)

THD:

<0.03% (at 1kHz and 25W), <1% (20Hz-20kHz) all output levels

Input level for 55W output (limiter operation begins):

610mV r.m.s. at maximum gain setting

Input impedance:

10k ohms

Maximum input level: 30V r.m.s.

Bridge Mode (per pair of channels):

Programme power output:

160W into 8 Ohms

Sine wave r.m.s. power output:

110W into 8 Ohms (restricted by limiter operation)

Peak power output:

320W into 8 Ohms

Gain:

-infinity to 34.6dB (adjustable on rear panel)

Frequency Response:

<10Hz to 35kHz (-3dB), less than 1dB down @ 20kHz

Signal to Noise ratio:

86dB (22Hz to 22kHz), 90dB (A-weighted)

THD:

<0.03% (at 1kHz and 50W), <1% (20Hz-20kHz) all output levels

Input level for 110W output (limiter operation begins):

610mV r.m.s. at maximum gain setting

Input impedance:

10k ohms

Maximum input level:

30V r.m.s.