Here’s a wonderful amp — it’s Class A but as it’s on the smaller side and only puts out 12Wpc it won’t act like a space heater and deliver the sonic goods…
https://www.usaudiomart.com/details/650057786-valvet-e3-stereo-single-ended-amplifier/
This AVA amp would also be worth a look…
https://avahifi.com/products/vision-set-120-power-amplifier
Hope this helps, and best of luck.