Recommendation for ATC SCM150 Amp/Pre

Op we were electro dealer for many years the aw 400s are excellent however the best combo we eve heard with our atcs was the Coda 16 power amplifier which had even better bass control and slam while also having a rich well fleshed out midrange, and a much wider sound-stage,then the electro amplifiers  and we combined that with the awesome zesto leto line stage the sound was incredibly life like  and vivid we were talking about that particular demo for weeks after wards.

Dave and Troy

Audio intellect NJ

Atc, Coda and Zesto dealers

The Bryston 14B3 is worth a look. 

@dynamiclinearity I spent hours with the active SCM40’s and passive SCM40’s; The active system used the ATC top preamp/ controller. The passive setup used a Moon 641 integrated amp; same DAC as source and same room, same speaker locations. I preferred the passive setup. Sounded better to me. It’s not always the case that active is the obvious choice. YMMV of course. 

I might add that the last speakers Gordon Holt, the founder of Stereophile bought for himself were active ATC 50s, basically an ATC 150 with a smaller woofer(same mid range, tweeters and amps). And he told me they were one of the very, very few speakers that made the live tapes(and he did many of them including large symphonies, etc.) he made sound the like the live performance he heard while recording. If it's accuracy that is desired rather than 'musicality' then powered ATCs are one of the few routes there.

@dynamiclinearityin audio, there are no absolutes. Just preferences. No matter what ATC speakers (or any other brand) discerning audio enthusiasts end up with it’s all good 😊! Besides all that , the OP clearly is interested in amplifiers for HIS new passive ATC speakers. I doubt he started this thread to have a conversation about ATC passives vs actives. If so OP, please correct me if I’m wrong.