Tung-Sol 6550 No Cryo Reviews

4.8 Rating 36 Reviews

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Phone:

909.931.9686

Email:

joel.m@upscaleaudio.com

Location:

2058 Wright Avenue,
2058 Wright Avenue
California
91750

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“Just installed and biased these to replace a set of worn-out Golden Lion KT88s. So far, all is good. Very good clarity and dynamics. I'm not really familiar with KT88/6550s so can't give a very educated assessment. I ordered nine valves in case one was a dud. As it turned out the specs on one valve were way different from the others - perhaps this should have been picked up?”

1 Helpful Report

Posted 11 years ago

“Time to retube my Audio Research 130-SE, I went back to Upscale Audio because of their inhouse testing. I was advised to go with the Tung-Sol's over the Winged C's and decided to buy the cryoed Tung-Sol's. To my ears this is a bit like a Kt-88 meets an El-34 with the power of a 6550. Liquid midrange, controlled bass, a smidge of roll off in the highs. I should add both the EH and Winged C's sounded a bit dry compared to the Tung-Sol's.”

Helpful Report

Posted 14 years ago

“I have been rolling tubes through my Cary V12i special edition mono blocks with Jensen oil capacitors for sometime now. So for Xmas I called Kevin Deal for a recommendation and he said give the TS6550 a try (24 - tubes). Man was he right on. Kevin, "Get down with your bad self ! " The balance is the best I've heard on my Maggie 3.6's. The bass is very defined, the midrange is absolutely true, and the top end is clear, but not bright. A definite and substantial improvement over the EH KT88's, Sovtek EL34,s. 1,2,3,4,5,6,7... now I sit in my room and hear heaven, or close to it.”

Helpful Report

Posted 14 years ago

“This is the best my system has ever sounded since I replaced the EH KT88 with the Tung-Sol 6550. The bass is more dynamic and controlled, the mid-range is true, but the highs are missing a little bit of sparkle. However the balance is perfect for my system. Kevin Deal assured me that he knew what he was doing when he recommended these tubes for the Cary V-12 mono blocks (24 tubes) to drive my Maggie 3.6's speakers. Right now I'm tickled to death, and having an audiogasm. Thank you Kevin!”

3 Helpful Report

Posted 14 years ago