Not aware of a break in period. Bloated bass is sometimes caused by dirty power, so maybe the bass is OK and you need to adjust your speaker placement or other room effects. I personally think the Monsters are good for HT as demonstrated by the TV improvement. I have two Monsters hooked up to 2 different TVs, but I use something better for audio (Vansevers and Blue Circle).
Break in period for power conditioners ?
Is there a break in period for power conditioners. I just put a Monster HTS 2000 in my system. Now it sounds thin and bright. Will this change? If there is a break in period, how long is it? Interestingly my TV looks better but my stereo sounds like .... it needs a doctor.