Service and upgrade LS 2B Mkll

Looking to have my Audio Research LS 2B Mk ll Serviced and upgraded . Who should I send it to?

aaddmann02-18-2026 4:37pm

mattmiller Details Discussions Posts This discussion Message User 1,620 posts 02-19-2026 at 02:15am Copy Comment URL Report Comment Edit Delete Audio Classics in Vestal New York Should be of help with that. https://www.audioclassics.com/ 607-766-3501 Mike Sastra is the guy Matt M
wharfy Details Discussions Posts This discussion Message User 562 posts 02-19-2026 at 10:47am Copy Comment URL Report Comment Edit Delete @aaddmann - ARC LS2B MKIl was my entry into ARC products. With the right NOS 6922 the sound was/is sublime. Have you read one person's experience upgrading their LS2B MKII? I did this and the differences were not small- David http://www.audioreview.com/product/amplification/preamplifiers/audio-research/ls2.html?p=1#reviews
aaddmann OP Details Discussions Posts This discussion Message User 12 posts 02-19-2026 at 05:23pm Copy Comment URL Report Comment Edit Delete @mattmiller - Thank you. I contacted Audio Classics, unfortunately they don't work on any Audio Research equipment. @wharfy - Thank you .