What was your opinion regarding the CRL stereo enhancer, wich made part of one of the "black boxes" they had? At the time (mid 90's) I enjoyed it more than the Orban's.
The stereo enhancer in the CRL Amigo FM is pretty unobtrusive. Most of the time you'll need to wear headphones to hear it doing anything, even when the indicator LED shows that it is boosting the L-R gain. But on some music which was recorded with very little stereo separation, like some of Billy Joel's late '70s and early '80s songs, it opens up wide and then you can hear it even through a car stereo.