Audio Research REF 210SE Factory Upgraded to KT 120 (pair)

The upgrade makes them equivalent to the ARC 250.  "Amazingly sounding, powerful and sophisticated" this describe the best this pair of mono locks. They can drive the most demanding and power hungry speakers (YG Hailey in my case)! It delivers excellent quality with crystal clear signal,  majest...

The upgrade makes them equivalent to the ARC 250.  "Amazingly sounding, powe...