I wouldn't do that. Have him put in a 20 amp circuit for that amp. Everything else on the other. I have all mine ran off a 30 amp circuit. All grounds are tied together that way.
JVC RS4810 projector Stewart Cima 115" 2.35 screen, ATI 523 and 528 amps
7 mirror imaged 2 way DIY monitors. All matched to within 1db. All parts matched, 1 SVS SB16 ultra subwoofer
Emotiva XMC-1 processor Marantz UD5007 Bluray player
Furman sequencer ran off of a double 50amp breaker,Furman power conditioner
All in a dedicated 15x22x8 foot dedicated home theater.