Prices: various
Website: www.lotusgroupusa.com
Howard said: No matter how much fo.Q I used in my system, whether in the form of tape, sheets, or Audio Board, the sound never became too dark or damped. Moreover, the sound didn’t merely change -- it always substantially improved.
Read the SoundStage! Ultra review.
The gist: If you are a tweaker, these may be worth investigating.