My Denon (100watts) without my amps added, fill my 30 x 31 x 9 ft room just fine. I'm sure the Yammy will be fine, but only you can tell us. \:\)

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85