With the Tanto 1 which I had owned, I had much better results with a high power ss integrated than with tubes especially with the bass response. With the tube integrated, bass was ordinary for a large floorstanding 2-way but with a 150w/ch ss amp - HOLY SH%$!! I had to take things off shelves as they would rattle when the speakers were playing. Simply amazing! SS amp was a Tact M2150 which I would HIGHLY recommend. Can pick up used models for @ $1200 ... the S2150 is essentially the same amp but w/o the volume control wheel and is available occassionally used ofr under $1000. Volume on the S version must be adjusted by remote control. If you only use digital sources, this amp is tough to beat in my experience.
Jeff
Jeff