I got this 300B IA from Willsenton, last week with my LS II's, and the sound was amazing, and captivating. can be had under 1500 online. Not my first tube amp by any means,, but the cheapest so far, and it does hold it's against the 4-6 k tube amps I have from Cary Audio and Dennis Had, and others.
Willsenton R300 Single-ended Integrated 300B tube amplifier& Power amp : China-hifi-Audio audiophile tube amplifier online store, Willsenton, Boyuurange Reisong, Muzishare Integrated Amplifier, power amp, preamp, SoundArtist Speaker for sale [MUIA9832276] - $983.18 USD