I don't have any first-hand experience with "class D" digital
amplifiers, but I saw an ad for a PowerAcoustik model that supposedly
puts out 2300W RMS into one ohm, and costs just a little over $300.
Even if they're wildly inflating the power numbers, that still sounds
like a hell of a deal. I paid almost that much for a Linear Power
2202IQ (about 375W RMS mono) in 1991, and $300 is about what I paid
for the used PPI A1200.2 (1200 WRMS mono) that I'm using now.

I know that digital amps are bandwidth-limited, making them
more suitable as subwoofer amps than as full-range amps, but are there
any other drawbacks to this design?

Scott Gardner