I have the Imagine B bookshelves, fantastic speakers. I use an Outlaw RR2150 which has 100 wpc, dac, phono, bass management and is a 2-channel dream. Since purchasing the RR2150 I have also owned Emotiva xpa-2, Bryston B60, Exposure 2010S2. I have sold all and kept the RR2150. It is very good.