I am selling a pair of Calyx 500 mono amplifiers. They are some of the best Class D amps available and have received excellent reviews. They use same ICEpower 500 ASP module as many pricier amps. These monoblocks sound as good as the Jeff Rowland Model 201, which use exact same module, but cost $5400. They are 250 watts into 8 Ohms and 500 into 4 Ohms. They have dynamics and PRAT second to none. I replaced Krell FPB-300 with these amps almost two years ago and never looked back. I am downscaling to an integrated amp. Shipping will be $50 to the lower 48 states. Low-ballers will be kindly ignored. Thank You!