i would bet good money that it would make a killer harp amp.it is based on a twin reverb, i believe..... notable twin users paul butterfield, magic dick. i think rod had one at one time. i don't think his had reverb.
the twin reverb was 85 watts loud!.... this is class d power amp, like the quilter but it has a tube pre-amp. the biggest draw back is the price $800.00 ouch.
i will have a chance to play thru one. perhaps a i can record a sample.