Ashly Audio Inc. PQX 572 by nazaroo2
This is a simple, practical Parametric EQ design,
which is very flexible, and replaces/increases the options
on any input channel of your mixer via insert.
It can also be very effectively used for tone shaping of
PA systems via inserts on the Main Outputs of your mix.
One example use would be to dedicate one "channel"
for a mono stage-monitor/foldback mix, and the other
"channel" for the Mains FOH (Front of House) Mono mix.
It is good enough quality to also apply to a simple mixdown,
for testing or tone-shaping or corrective EQ.
On some units for sale used, you will see damaged front knobs.
The front knobs stick out a significant distance from the panel,
making them susceptable to damage, unless precautions are taken. A metal railing or recessed mounting is advisable.
The rear XLR / TRS in/out as well as screw-strips make
hookup very flexible.
I suspect that some units get damaged in live gigs due to abuse, rather than poor construction.