I used the last 5 years on 2 boxes 8 ohm Yamaha bass 18 SW118.Je had before a 1650 BST Liker that big powers movie clip when I no longer have this problem with the Mac Mah SLX 1100.2x1100W 103dB.
J appreciate the quality construction including 8 condos 10000 v 80 uf filter and its huge transformer and its overload clutch and adjustable input voltage 0.775V, 1V-1.4V.Je can assure you deep bass without weaknesses without about the filter with a cutoff 160 hz DISENGAGEABLE also enabled for subs.
I don not like the weight and fragility of the XLR connectors.
Bought second hand in 2005 325 Euro I do not regret pas.Bien ventilated design relatively cleaned regularly c is a reliable amplifier.
See 2 photos.