I owned a Bryston 4B-ST (havent heard the SST) with PSB Stratus Goldi speakers. At a recommendation of a trusted dealer, I dropped the Bryston and bought a Spectron Musician II. The Spectron was clearly head and shoulders above the 4B-ST (not even close). Now Im using the Spectron with the La Folias and it is a great match! The Spectron has great power to control the 11 rear woofer and is also very clean and neutral. This combination must have great front-end components and cables to take advantage of what is possible.
What is nice about the La Folias is, you can listen to jazz with female vocals at moderate levels and they sound great, you can also rock at extremely loud levels equally as well, as long as you can afford to throw a lot of clean power at them.
With great (or proper) recordings, the La Folias will disappear. I literally could hear no sound coming from the La Folias but from in-between and around themeven at loud levels.