Antique Sound Lab is an interesting possibility. Chinese made, they offer 4 amps between $600 and $1100, and on up to $3000. Check divertech.com, which distributes several pretty good products. I don't have experience with them, but saw/heard at a show. Audion (British) makes the ETSE, a 12 watt single-ended with one EL34 per channel, and a volume control. I have one, and it's really excellent. Single ended vitality, well extended, but slightly soft...Check ossaudio.com.
