I used to rent to amplify two sub Mach-type equipped with double 46.
What is nice about this amp is of course its weight and its size (9.5 kg, 1u).
I tried other amps such as RCF HC3200, Amcron MT2401, HORTUS de12.2 ...
Quality / price ratio Excellent! Performance is very good for bass, I have not tried broadband or medium / high, but it seems it's too aggressive.
I would like to buy me 2 but ... it's still cheap though ...