Listening to the SR1a + HSA-1b right now and it’s always a pleasure. It’s hard to listen to other headphones anymore, good as they are. In my speaker-based system I have a very nice DAC with headphone amp, listen with HEDDphones, which are really fantastic, but it’s just not the same.
I listen to a mix, but mostly acoustic or classical guitar, solo piano and space/ambient/psybient - all are served well with the SR1a earspearkers.
The DAC connected to the RAAL system is a Resolution Audio Cantata 3.0, originally purchased in 2007 and upgraded since then. I recently had DSD 128 capability added and while I have few DSD albums they sound amazing; they are clearly better than even high res recordings and the RAALs communicate that.
I originally purchased the SR1a ear speakers with the Schiit amp, and recently switched to the HSA-1b. I prefer the HSA-1b. The Jot R had an energy in the treble that my ears did not like. To be fair, it sounds fantastic and drives the RAALs perfectly. But overall the HSA-1b sound better rounded: treble that does not grate and better bass.
Back to original point, there are a lot of very good headphones out there, but the experience of the RAALs is so very different that the concept of headphone changes.