This amplifier not offered a big step forward with their SR1a, but also could serve as an endgame amplifier for some oThe Raal | Requisite HSA-1b amplifier that just took their pioneering SR1a ribbon backed ear-speakers to a whole new level. This amplifier not offered a big step forward with their SR1a, but also could serve as an endgame amplifier for some of the power-hungry planar magnetic headphones like the Abyss Phi TC AB-1266 and the Hifiman Susvara. Talk about win-win.
You can find my review here for this amplifier: https://headphone.guru/the-new-raal-requisite-hsa-1b-headphone-speaker-amplifier-the-pinnacle-of-personal-audio/
– Peter Pialis
