Currently I am powering my BePure2s with a solid-state (Class D) amp from PS Audio. That combination sounds fantastic. I'm about to add a McGary SA1-E to this mix, based on the many anecdotal reports on the synergy between this amp and the BePure2s. I will keep the PS Audio in my system and use it for background listening, and the McGary for critical listening (assuming I actually like it better than the PS Audio, which seems likely).