Svetlana SED "Winged C" 6550C

Home
Vacuum Tubes
Svetlana SED "Winged C" 6550C

Svetlana SED "Winged C" 6550C

Price:

$54.95

Rating:

( 6 product reviews )

Product Description

These have been quite possibly the best 6550C/KT88 tube type in production. But impossible to find in first-quality grade because the bulk of them were being bought by guitar-amp manufacturers. This left naughty-boy tube sellers offering "B" grade tubes which may work OK, may not, may have a shorter life, or go knows what. These tubes have been a personal favorite of Uncle Kevin for years. But the people responsible for getting them into the U.S. have been less than stellar in my opinion. So we bring them in direct from Russia. They are perfect as perfect can be. Leave it to Upscale Audio to get you these tubes in a way to make it safe and get you first quality. Such a harmonious and perfect tube. Happy days are here again.

Pricing above includes a 72 hours burn-in, and custom matching in any quantity you need at no extra charge.

All power tubes are Platinum Screened & Tested to the highest standards, including a 72-hour burn in process, and testing at real-world voltages.

Product Reviews

Winged Cs fly.

Posted by Mark

These may be the best 6550s I've ever heard in my Leslie speakers, including NOS. Power, headroom, balance, harmonics, presence -- it's all there. Yes, not cheap, but very much worth the cost. To fully appreciate them, use a good 12au7 tube (probably NOS) like Mullard, Telefunken, or Amperex.
prologue 7 monoblocks

Posted by Sheldon

I recently purchased the prologue 7 monoblocks by primaluna from Kevin here at Upscale.Amazing-I will take these amps over any other tubed product I have heard---incredible sound--build quality-and most important the guidance and support from Kevin & Jarod at upscale are second to none-----thank you Guys!!!
Buy from Upscale

Posted by Brad Farnsworth

I love these tubes. I had ought some from another vendor, and thankfully had my technician test them and install them. He said two of the drew excessive G2 which is a problem. I don't even know what that means. Upscale tests for that and the tubes are perfect.

Like anything in life there are all kind of scources.Upscale is my new scource.
detailed yet relaxed

Posted by kory

I have EH EL34 and the Prima Luna KT 88. The Winged 6550 are the best balance of the lot. Great detail, yet relaxed presentation.
Best 6550 in Current Production

Posted by Robert H. Levi

THe Winged C is the best 6550 in corrent production and rivals older NOS Mullards for full bodied, high definition, and neutrality. They get out of the way of the music and just sound right in more amps than any other tubes around. Not the most expensive in current production, just the best and most reliable and predictable. Don't take chances, just get these and don't look back.
Glad you welcomed back the SED

Posted by m.b. nestor

Theres not much i can say about the Winged C 6550C except that ive found them to be the absolute best. I had for years, for a long time, a nice supply of GE 6550A,which have always been the standard IMHO. They were cheaper than some of the other "celebrity" parts from Tungsol and Genlex and sounded AT LEAST as good. These 6550C are pretty much exact copies of the old GE, and Winged C tubes are seriously well made to commercial electronics standards. Buy'em, Get'em.

Warranty Information

Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.

Tubes being sent in for warranty must have a return authorization number from Upscale Audio. This RA number must be written on the outside of the box. Please also include a note in the box that has your name and telephone number, and please explain the issues with the tube. If this information is missing it will delay the shipment of your replacement tube.
Vacuum tubes being sent to Upscale Audio for warranty replacement must be shipped in a box with appropriate packaging to keep them from being damaged. Vacuum tubes returned to Upscale Audio using inadequate packing will have a voided warranty and will be refused at the customer's expense.

Exceptions to our warranty policy are as follows:

Upscale Audio reserves the right to refuse warranty at our disgretion based on the equipment being re-tubed. You will be notified of any change prior to your order being processed.
Using a tube in an application in which it was not meant to be used. If your amp calls for a 6550, and you decide you want to plug in a 6V6GT, Upscale Audio is not liable if the tube fails, and will not honor any warranty in such a situation.

Upscale Audio is not liable for any damage or injury caused by the improper use of its tubes or the use of an incorrect/incompatible tube type. If you are unsure of what tube or tubes your equipment uses, consult the manufacturer before making a purchase. Using an incompatible tube type may cause severe damage to your equipment and will void your tube's warranty.

vacuum tube returns for refund:

Vacuum tubes are electronic parts and are not refundable under any circumstances.