The amp is a JVC AX-Z1010TN which I found out about via PFM in a long-running thread. The sound is very relaxed, natural and neutral. Even through my humble B&W speakers a good BBC broadcast via their HQ HLS stream through the amp's DAC I can tell something special is going on, so a high-end mini monitor or bookshelf speaker should improve things further.
I'm also hoping to get a classic CD player to finish the system, either a Marantz CD-94 MkII/95/99 or maybe a Victor XL-Z900 or similar.
Hopefully this helps.
Regards,
Nick