Single-channel, transformer-coupled compressor housed in a 500 Series module
A gain range of -6 dB to +20 dB allows for compensating for any signal loss due to compression
When the Peak switch is engaged, the compressor uses a combination of peak and RMS (average) detection to determine level - when disengaged, it follows RMS levels
A switchable 250 Hz High-Pass Filter can be applied to the VCA side chain signal, allowing the compressor circuit to disregard sustained low-frequency content
With the Link switch engaged on two 543 modules and controls set approximately to the same values, Gain reduction on both channels will be the same, preserving stereo balance and position - function is available either on "link-buss" enabled 500 Series racks, or by hard-wiring the two "link-busses" in non-compatible racks
When the Link switch is engaged on two connected 543 modules, ducking of one source is possible
Two peak LED meters display output level and gain reduction