Frankly I'd consider new speakers rather than new amp. These are the standard trendy design, smaller drivers (WAF) and lower sensitivity needing more power. That said, 80 wpc should be enough unless you're a kid wanting to shake the walls. People often limit their amps ability to drive a difficult loads with a power conditioner or power cord that doesn't support the dynamics required. So make sure you aren't messed up there.
that said, you'll get better sound from a larger speaker with real bass drivers and a higher sensitivity.
jerry