Vacuum Tubes for Audio, Hifi, Guitar amplifiers, Industrial, HAM Radio, and just about any other application you can imagine! We have over 80,000 vacuum tubes in stock and ready to ship! All tubes are tested prior to shipment and are covered by our 30 day warranty! Tubes Unlimited 6527 Kury Ln,Houston, Tx 77008 (713)471-5408 www.nosvacuumtubes.net read full review »