Check out the Valvet E2. A bit over your price range but may be worth the stretch.
https://www.audiogon.com/listings/lis98ea7-valvet-e2-single-ended-class-a-amplifier-new-review-check...
https://www.audiogon.com/listings/lis98ea7-valvet-e2-single-ended-class-a-amplifier-new-review-check...