Having purchased a Sprout a few months back, I could not resist buying the new Sprout100 too. Very pleased with each. Placed them side by side in a cabinet and leave them both powered on 24/7. One for outdoor speakers and one for the living room. Connected a Google Chomecast audio (optical) to each amp. Chromecast allows us to create GROUPS. Whenever I want music now, just pick up my phone, choose either Indoor, Outdoor or both with independent volumes. Perfect for my needs.
After many years of 5.1 systems, I just wanted to get back to simple stereo. Love the compact, high tech design and features. I hope that PS Audio is very successful with these!