Well, I only tried it in a local audio store so take my impressions with a pinch of salt. My friend likened it to a more powerful and refined (souped-up, if you will) Graham Slee Solo SRG. On the warmer side of neutral, good PRaT, layering and bass control. Basically, if you like the sound of the Auditor, at half the price of the Phonitor I don't see the need for any consideration unless you really like to tweak your sound which in that case the Phonitor would be the better choice.
Setup was CEC TL53Z + SPL Phonitor/Auditor + Edition 8/K701/Vintage RS1