Tung-Sol 6550 No Cryo Reviews

4.8 Rating 34 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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David Arnovitz

Verified Reviewer

“Easily biased all eight tubes with one adjustment on three tubes after one hour. After that, they hold perfect bias. Huge sound improvement over my old 6550’s. I waited way too long to replace. So these tubes restored the ear pleasing sounds emanating out of the mono blocks. I was so pleased with the cost. Saved about 350.00 USD over what CJ quoted me. I am ordering another 12 tubes but they do not discount their tubes. With great prices on most tubes, I am fine with that. Shipped quickly and safely. Very smooth on line experience. Only exception is you have to look around the site to find what you are looking for. But overall, great products with reviews and a quick ship. All good here.”

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Posted 4 years ago

Richard Kimberly Heck

Verified Reviewer

“I've used these for some time in a VTL MB-185 (original model). They seem to me to be the best of the current production 6550s---and, of course, I trust Upscale Audio to provide me with the best possible tubes.”

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Posted 4 years ago

Craig Parrott

Verified Reviewer

“Paired with nos RCA 7199 preamp tubes my ca. 1962 HH Scott LK-150 could not sound any better,but,it probably will over time.”

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Posted 4 years ago

Author didn't leave any comments.

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Posted 4 years ago

“Ken Davis was a great help making my tube selection. I laughed, I cried, I took his advice. I'm glad I did! But now I have 3 Prima Luna branded KT-88s. How can I use these or add a matching 4th? Thanks again'”

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Posted 4 years ago

“Tubes are performing as expected - they seemed to be pre-tested and matched. In any cases happy so far”

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Posted 4 years ago

“Run hot but superlative sound.”

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Posted 5 years ago

“Awesome sounding tubes my amp never sounded better”

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Posted 5 years ago