I ran into Steven at the RMAS in 2013, ultimately I purchased his demo pair of 108’s….full range 85.5db and 300lbs each….they like power and sound exceptional. A few years pass by and I find the need for a smaller more power efficient speaker and after talking to Steven I purchased the Fifty90’s to run with a Melody 300b integrated amp…. Very nice w/ a 22 watt amp. He also recommended the Vayus speaker, very similar to the Fifty90’s but better fullness in the bottum response….89.5db ..I own 3 different models of Steven’s gear …..I recommend that you call directly