Quote: Yes, volume was matched for me, to 0.1 dB. (Tested with equipment In my former theatre) Quote: No EQs for the testing, but I did use both of their EQs extensively in normal listening I preferred the Clip+ for everything but the sound... But the sound wasn't far off of the S9. The S9 is basically better at everything but the highs, where it matches the Clip. The S9 also had some neat EQ effects but most of them added a bit of noticable distortion before they were even half way up. (The DSP effects, not the regular EQ.) The Clip was simple and brilliant, where as the S9 was more full featured.