Gold Lion KT77 / EL34 No Cryo Reviews

4.9 Rating 76 Reviews

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2058 Wright Avenue
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“I replaced some JJ's with these. All I can say is wow!!”

Helpful Report

Posted 7 years ago

“So far so good. Still breaking in. Very nice controlled sound so far. Really excel in midrange, which I was missing in my stock Primaluna tubes. The clarity of the midrange makes these tubes excellent for home theater, since dialogue is very clear. The highs are a little bright at this point, but I imagine that will mellow with use. Might be a problem with overly bright speakers or integrated amp. Otherwise the highs are very expressive and "extended", but not overly so. The bass is nice and clear and controlled , but realistic. Overall I am very happy.”

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Posted 7 years ago

“The sound good and look good. Not sure about "durability" however. Out of 8 installed in my Manley Snappers less than six months ago, 2 have failed (one ran away, the other lost its bias).”

1 Helpful Report

Posted 8 years ago

“These are fantastic in my Hovland Sapphire. I like EL34 tubes but the KT77 works wonders in this application. I have purchased many tubes from Kevin over the years; plan on doing the same for years to come. Great service, fast shipping, great communication”

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Posted 8 years ago

“Have not used these as yet But have 12 pairs functioning for over a year in VTL ichibans. The tube is a good sub for the originals, cost effective and apparently reliable. Matching is really good and a nice offering for the price.”

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Posted 9 years ago

“These are really great tubes. I use them in place of my EL34's , the one thing good about the KT77's there a little thin than EL34's , my power tubes are reseat in the amp a little so the KT77's give me some air and venting around the tubes for heat to escape.. They are very durable well built they look great and feel little exotic the glass looks like crystal and the labeling is sexy gold lions have a very nice tube glow nice to look at...the boxes are really cool.. First off Kevin and upscale do a great with the tubes 72 hr. burn in you feel safe and confident with the tubes , they hold bias perfect and my amp works like it's suppose to like clock work. The KT77's have good holographic sound and imaging and after 100- 200 hrs the tubes do come alive the bass is magic it sweeps across the sound stage. You don't need a 50,000 dollar amp to sound good these tubes make a low cost amp. sound great the tubes look and feel like you own a really expense exotic amp..The one thing cool about Upscale Audio is there in high end audio world so there going to give good stuff thats how I feel also with these power tubes Upscale gives great instructions on tubes on there web sight very helpful .. Thanks!!”

1 Helpful Report

Posted 9 years ago

“I ordered a pair of Gold Lion KT77s via on-line. The system is very user-friendly. After my payment cleared, the shipment was here in 1 or 2 days. Excellent packing as well. My amp sounds smoother, clearer, and the bass is more extended (at about 50 hours) than with the EL34s that I used before. I am very satisfied with my purchase and will be shopping here again for any other tubes in the future!”

Helpful Report

Posted 10 years ago

“I'm using a set in a totally modified Dynaco ST70 with a beefed up power supply and the VTA 6SN7 driver board. I sprang for the Cryo treatment for the KT77s. I can't say what that did for the sound as I don't have an untreated set to compare them to. What I can say is these tubes sounded very good right out of the box. It probably helps that Kevin burns them in for 72 hours. After just the first 2 albums the bass has more extension and the sound stage has opened up. Very good balance of warmth while being very detailed. Vocals are outstanding. I have a set of original Mullards in excellent condition. Once the Amp is well burned in I will do an A-B test and I'll do a follow up report. I wanted to try these because I'm running a set of Gold Lion KT66s in my McIntosh MC40 amps and they are the best sounding I've had in those amps to date. Considering the high cost of NOS KT77s I believe these are an excellent alternative. BTW these have great looks and quality built with heavy glass very similar to NOS tubes.”

Helpful Report

Posted 11 years ago