Accuphase is my favorite brand. Build quality, functionality and the sound is one of the best you can get. I own A46 with C2450, and I'm very happy. Recently I added E5000 and I can not believe how good it is. I think that all new integrated amplifiers from Accuphase are amazing. I auditioned A300 mono blocks with DC1000 DAC, C3900 preamplifier with DALI Kore and it was the best sound I ever experienced. Accuphase matches well with most speakers. I'm getting very good results with Dali Epicon 8, Dynaudio Confidence and Focal Scala Utopia Evo.