Black Ice Audio by Jolida Foz SS-X Soundstage Expander

Wow, this little unit is a lot of fun - a tube buffer to add some sweetening, a bass tone control that does not degrade the signal in any way, and a soundstage effect that can widen or narrow your soundstage as needed.  I had a lot of fun using this to make on-the-fly adjustments for poor recordings.  

In like new condition, in all original packaging, will be double boxed for shipment, includes original tube. Please note that the "white" patches in the photographs are reflections in the brushed/textured aluminum from overhead track lighting, and not wear or damage.  The unit is in near mint condition with hardly any recognizable signs of wear.

From Enjoy The Music's review:

What if I told you your listening space was made out of a virtual elastomer? The walls the ceiling and even the floor could be reshaped. Could you use a larger sound stage sitting in your parlor or listening with your headphones? If that were an option would you chose to sit in an orchestra seat in the center of Albert Hall? Or maybe you would place yourself sitting at a table in a small jazz club? Well now it's possible, and there are other options available too! Let's say you have a favorite CD but the recording you have is not what it should be. Imagine you could smooth out the nasty bits and make it more palatable? Maybe even warm up the low end a trifle and smooth the overall presentation. Or, conversely, you have a bit too much bass energizing your listening room. Well now you can control these elements by as much, or as little, as you want!

I described these very same capabilities of the SS-X to a recording engineer friend and his comment was, "that sounds like an old tone control." My reply was, "Hell no not like that". In ancient audio days most every audio receiver had a tone control sometimes called a contour control to alter the perceived amount of treble and bass. The old effect was odd, like pasting on a dollop of bass at the bottom frequencies or a glued on chunk of treble on top. The older method never seemed to blend in or be part of the performance. Today there is a clever audio control in the Foz SSX, which is actually an Audio Sound Processor. It is a clever and affordable way at $400 to address any or all of these issues.