-I have been using a can over 2 years now.
I use the B2-A1 Amp with 2 sub d & b. I couple the B2 with the C4 system.

The system consists of:
4 C4-SUB, C4-TOP 4, B2-SUB 2 + 3 + 2 AMP P1200A A1.
The system is like all d & b products trs balanced and powerful. The yield is monstrous!

Speakers: 2 x 18 "
Power (1 m): 139 / 136 dB-SPL
Power handling (RMS / peak): 600 / 2400 W
Rponse in frquence (-5 dB): 37 Hz - 100 Hz / 32 Hz - 68 Hz
Speakers / D12: 2
Dimensions mm (HxWxD): 1160 x 580 x 920
Weight: 102 kg
THE quality-price ratio is very good since the hardware is indestructible, it is an investment life! We talk about hardware rsolument professional!
-With the exprience I refer this choice without hsiter ONE MINUTE!