Kcin,Hi at 80db that is 50v out- so yes. More than that dynamic headroom that the dual power supplies support is really incredible.
On the SUT - any SUT that I used blunted leading edges to some extent and lost detail. Quiet yes-but information is lost. Consequence with active is that you are prone to noise and at the mercy of linearity of the design - so there are no free lunches.
SUT is definitely more forgiving from a design perspective
Thanks for the clarification. The Aesthetix IO may be unique among active phono stages with 80 dB gain. I was not aware that a SUT could cause the deterioration of sound you describe. No free lunch is right.
Wilson