Sovtek 5881WXT Power Vacuum Tube (Matched)
The Sovtek 5881WXT vacuum tube is a reliable beam tetrode delivering a warm, round tone that "sweetens" any vintage or modern guitar tube amp design. Built to rigid military standards, the Sovtek 5881WXT power tube will tolerate higher voltages than most other 6L6 tubes. This tube is commonly found relabeled by Fender and Groove Tubes to GT-6L6B. Mesa Boogie relabels them STR425.
From our review of the Sovtek 5881-WXT tube: "Solid construction and good performance. While not outstanding, the 5881WXT is probably the most commonly used tube of its type. Many amp manufacturers have been using these reliable workhorses as original equipment components. A good choice for general purpose use but not as rich in harmonic content as other tubes in this class. If you like to run your guitar straight into the amp, there are better choices. If you prefer to run through a bunch of rack equipment or like major crunch and overdrive sounds then this tube will work well."
Other Sovtek tubes6L6 Tube Types
Additional Information and Downloads
Reviews:
6L6 Tube Review
Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System
Downloads:
Sovtek 5881WXT Datasheet (PDF)
Download Adobe Acrobat PDF reader
Warranty Information and Return Policy
Warranty Period: 3 monthsAll our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
7 reviews
Good tube for a good price
by Frank
I use them with my Traynor amps, good performance for a good price. A good middle-of-the-road tube when you don't want to spend too much yet still want some quality. When they start "popping" you know it's time to replace them.
Definitely Durable
by Bill
This tube sounds ok, and has held up great over 5 years. The amp has seen some heavy bumps and bruises, but these Sovteks hold up. Reliable indeed... They were the stock tubes in my amp, and they keep going back in when others fail.. I can count on these to work.