Item # 210095 | Customer Ratings: ( 4 Based on 2 reviews)

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SOVTEK 5881WXT Matched Power Tubes
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The Sovtek 5881WXT power tube is the same as the 5881 but with a full-size base for easy installation in vintage amp designs. Used by Fender, Crate, Carvin, and amplifier manufacturers.

These Sovtek 5881WXT tubes are in platinum matched sets. Sovtek's platinum matching process consists of a 24-hour tube burn-in period followed by a bias (plate) current measurement in milliamps.

Product Reviews
(Based on 2 reviews)
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  • Disappointed

    As reviewed by gamjamm on 10/16/2009

    I cant believe these tubes were matched. First off,my duet consisted of one tube having a single "O" getter while the other had double "tophat" getters. This by itself does not mean the tubes still cant be matched but you would think they would sent out similar tubes when in sets. Secondly, one tube ran much "hotter than the other. I thought maybe it was my amp so I swapped them around to no avail. I ended up having to bias much colder than I wished just to keep the "hot" tube out of the red. The sound suffers but until I get a real matched pair I will have to live with it. I recommend not going with the sovtek matching system,get a reputable tube amp tech. or groovetubes to match them.

    10 of 14 people found this review helpful.
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  • Sovtec Soft Duet

    As reviewed by David on 1/22/2015

    Received the tubes quickly and they performed perfectly. Best price I could find - very satisfied. Their store is also excellent if you ever get a chance to visit one. Large selection of guitars and easy to try them out.

    0 of 0 people found this review helpful.
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PO Box 4769
Westlake Village, CA 91359
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