If you love tube based SET amplifiers or low power Solid State amplifiers (think Pass Labs XA-25) ***and*** have a relatively small acoustic space this might be a great speaker for your system.Emphasis added: the low sensitivity of this speaker makes it unsuitable for SETs unless in a smaller room! In most rooms a sensitivity of about 15dB higher is required to really hear what SETs do.
The Audio Alto R101 : A special speaker for SET amplifiers and small acoustic spaces
My review on the Audio Alto R101 speaker just went up on the Stereo Times website. It was a pleasure to review this "petite" single driver floor-standing design because of it's overall beautiful musicality, amazingly good overall dynamics, and finally it's excellent top and bottom frequency extension. If you love tube based SET amplifiers or low power Solid State amplifiers (think Pass Labs XA-25) and have a relatively small acoustic space this might be a great speaker for your system. Take a look at the review for all the details that led me to this conclusion.