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--> Heading: Power 

 


Equivalent: 6L6GC, KT66

The Sovtek 5881 delivers a warm, round tone that "sweetens" any vintage or modern guitar amp design. Chances are if an amp uses 6L6-style output tubes, it has Sovtek 5881s in its sockets. Built to rigid military standards, the 5881 will tolerate higher voltages than any other 6L6. In fact, they're frequently used as replacements for the old 7027 model in vintage Ampegs. Extremely consistent from piece to piece, The Sovtek 5881 is the most reliable current production 6L6 available. Used by Marshall, Soldano, Solo, and others. The Sovtek 5881 has a heater voltage of 6.3 volts at 0.88 amperes. Maximum plate voltage is 250 volts while maximum plate current is 73 mA. The 5881 has a Transconductance rating of 6000 micromhos and a maximum output power of 5.8 watts.



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The Sovtek 5881WXT is the same as the 5881 but with a full size base for easy installation in vintage amp designs. Used by Fender, Crate, Carvin, etc.



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Equivalent: KT88

The Sovtek 6550WD and 6550WE were designed to be the finest 6550s ever produced. Thicker plates, improved heat dissipation, higher transconductance, and increased linearity are just some of the inherent aspects of the new Sovtek super 6550's. The resulting performance advantages include 5% higher output power, increased reliability, greater headroom, and superior tone. The 6550WE features a metal-ringed base for increased power-handling capabilities



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Hifi power triode.



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Mig 21 radarscope power tube. Any need to upgrade your old Mig 21 ? Otherwise used in Hifi.



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Simply the best 6L6 Sovtek...

Sovtek is proud to announce the release of their new 6L6WXT+ vacuum tube. Modelled after the vintage RCA 6L6GC "blackplate," the Sovtek 6L6WXT+ features larger plate dimensions and improved grid structure for increased power handling capabilities. The 6L6WXT+ also features mica spacers with metal springs to eliminate tube rattle and microphonics. The Sovtek 6L6WXT+ yields a 20% higher output than the Sovtek 5881WXT and offers superior tone and overall performance to any 6L6 or KT66. The ultimate 6L6, the WXT+ will improve the sound of any 6L6 guitar amplifier.



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Old Ampegs

Sovtek 7027s are available in platinum matched sets. Our platinum matching process consists of a 24 hour tube burn-in period followed by a bias (plate) current measurement in milliamps. Please specify matched tube grouping (ie. pair, quad, sextet, etc.) when ordering (no odd-quantity groups please).



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Equivalent: 6BQ5, 7189

The Sovtek EL84 series produce an unbeatable smooth, warm, distortion. Excellent replacements in vintage VOX AC-30s and the like, our EL84's are used by Fender, Crate, and Peavey.



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Equivalent: 6L6, 5881

Sovtek KT66s are available in platinum matched sets. Our platinum matching process consists of a 24 hour tube burn-in period followed by a bias (plate) current measurement in milliamps. Please specify matched tube grouping (ie. pair, quad, sextet, etc.) when ordering (no odd-quantity groups, please).



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Equivalent: 6550

The Sovtek KT88 was designed to offer the highest output power and the most reliable, linear performance available in a KT88. The unique tri-alloy plate structure of the Sovtek KT88 yields higher minimum plate current and higher transconductance while improving heat dissipation and reducing tube warm-up time. Its triple-carbonate Oxide Cathode allows the Sovtek KT88 to operate at full power for extended time periods without failure. These improved characteristics offer increased power output, higher amplification factors, and more precise tube matching with minimal drift while still maintaining tonal clarity.



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