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Another brand of amplifier, Bryston, also makes great bass, Bryston is pricey, but not, IMO, over priced, and Bryston amps are made with HUGE power supplies, great parts, circuits and design, and you can always find lots of Bryston on eBay. As well, Bryston has that 20 year warranty, and the warranty is TRANSFERRABLE, too! IF you liked the DC-300A on your JBL woofers, I think you would LOVE the Bryston 4B SST. The Bryston amps are cleaner than Crown, I know, Crown was always considered one of the cleanest amps, but, Bryston is even cleaner. And Bryston is one of the most resolving amps I have ever used. And, IF COST IS NO OBJECT, I heard a BIG Bryston 14B SST driving four JBL 2226 in ported cabinets, 2 woofers per channel, MAN it ain't going to get much better than this. The BIG Brystons just seem ENDLESS in their power reserves, and never seem to run out of gas!