Audio Tubes Direct is an Authorized Tung-Sol, Electro-Harmonix, Genalex, Mullard & Sovtek Dealer. We have over 4000 successful transactions on multiple websites with a 100% feedback rating. Platinum (Factory) Matched refers to tubes tested and matched by the manufacturer (Genalex). All preamp tubes have been tested for Gain (Mu), Transconductance (Gm) and microphonics on the industrys most reliable, voltage controlled testing equipment and exceed all manufacturer specifications. They are guaranteed from the manufacturer to be new and free from any defects in materials or craftsmanship and are backed by our 30 Day Warranty.
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