[Serge44]

http://www.amwindow.org/tech/htm/irec.htm
http://www.machmat.com/sales/index.htm
http://www.quickar.com/
http://www.partsconnexion.com/ - один из наиболее крупных и надежных магазинов
http://www.percyaudio.com/
http://store.triodestore.com/tubes.html
http://www.surplussales.com/
http://thetubestore.com/
http://www.tubesandmore.com/
http://www.vintagetubeservices.com/Dampers.htm
http://www.welbornelabs.com/