Svetlana 6550C Power Vacuum Tube (Matched)

1 Review
SKU: NSV-6550

Availability: Usually ships within 24 hours.

USD $‎71.95

Need matched power tubes? Don't worry! Price includes matching in any quantity you need for no extra charge. Need a matched pair? Just order "2" tubes. For a matched quad order "4" tubes. Matched sextets and octets are available as well.

The Svetlana 6550C vacuum tube is a tube manufactured at the New Sensor Corp. owned Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. Use it to replace all other 6550 power tubes and KT88 tubes. Solid construction and build quality. When Vacuum Tube Valley reviewed this tube they suggested it to be the best budget 6550 tube available. They noted its smooth, liquid bass, natural sound, and openness.

Other Svetlana tubes6550 Tube Types

Additional Information and Downloads

Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System

Svetlana 6550C Datasheet (PDF)

Download Adobe Acrobat PDF reader

Warranty Information and Return Policy

Warranty Period: 3 months

All 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

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Big sound!


I've used these for years on my Fender Bassman
300. The most powerful amp I have ever owned.
The sound was organic and 3D. Much better than
stock Sovtek. I used a ring on them which reduces
vibration and micro phonic effect, because you
know a bass amp is not a picnic for tubes.
This application is rough time and this amp played
in studio almost everyday but did not get out
much. The tubes suffered about 2 years of this
abuse. Not bad! I'm telling ya, it's rated 300W on
the back of the amp, but when those tubes glow,
the lights are dimming. That's the juice they can
take. Compared to a solid state amp, 6 of those
tubes can produce equivalent of 900W. Nothing
sounds like tubes.