I had a B380 for a number of years and powered it with an Adcom GFA555 most of the time or a Classe Dr8 with good results with either amp. I found the B380 will not plumb the nether regions however. The lowest response I could get in my room using the BX63 crossover was 25hz. So if you are trying to go way down low you may be disappointed. The B380 came with a particle board slab to rest on but I got the best results spiking it with some short 1 1/2 diameter spikes to rest it on. It does fill in nicely if you are using speakers short on heft into the 30hz range.
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