It is a simple boost

UTILIZATION

Config super simple, one knob to control the boost
A manual trs simple English.
Attention to placement in the chain, the compressor APRS impractical!

SOUND QUALITY

I use it to boost the clean sounds of my GL 500 in a ToneLab.
It does not dnature sound and really helps to clear the shim trs.
It's great to be heard clearly in the midst of others.

OVERALL OPINION

I use it for three months and remake that choice without problem.
For the price it does what is asked of him.