Break in on a Monster Power Conditioner


I bought a Monster Power HTS 3600 MKII about 3 weeks ago. My question is this: The first two days, the thing sounded unlike anything I'd ever heard (I have a Pass Labs x350, Bel Canto Dac3 and some Dunlavy speakers). Unfortunately, about the 3rd day, things started sounding closed in and the highs lost their air and all kinds of other stuff. the sound has gradually improved, but I want to know two things:

1. how long should one usually expect it to take to break one of these things in, and

2. was the added musicality and so on just a fluke?

The system still sounds better than it does going directly into the wall, which is how I was using it up until this purchase, but I'd sure like to get back to that sound I had at first.

Any suggestions? anyone else using one of these and had a similar experience?

Thanks everyone!

The first thing is take the amp off the conditioner. Put the Pre into the conditioner's high current out.
(if you have a integrated amp, you'll ahve to experiment)
(I own 2 Adcom. a Monster av2000 a Monster 7000Signature, and a Monster 5000.)
I find the conditioner certainly changes things. The biggest apparent change is cleaner all through the spectrum. The problem is the cleaner also means 'thinner' Wooley bass becomes polite. Midrange becomes thin.
I put my amp only through an Adcom 315 from the wall. The pre is via the AV2000 to the 7000SS amp outlet. (the 7000SS in balanced power mode)
I have the monster 5000 from the AV2000 for video gear.
A visuale image I have is that the power conditioners clean up the power waveform.. a thick sine wave becomes a thinner tighter one. But most gear is voiced with the 'fat wave' And the tidied up waveform, along with clarifying the sound,also thins it out. good for treble, good for clarity and definition, but bad for bass and midrange wholeness (bloom)