Brand new Ruby KT88-VSTR, solid plate, triple getter. These are manufactured in the Chinese Shuguang factory and are among the finest current production KT88's available with excellent reliability, focused soundstage, wide linear frequency response, and tight focused low end. We sold these previously as the Penta Labs KT88SC's. Same tube as the Preferred Series KT88.
- MC275 Review by Gene
- I bought a quad of Ruby KT88V-STR for my McIntosh MC275 and they are terrific. I'm so impressed that I was wondering if you had a recommendation of a 12AX7 tube for my McIntosh C2300 pre-amp and my EAR 834P phono amp. Thank you. Gene (Posted on 5/15/16)
- I like these tubes Review by Stew
The tubes sound great. I love the way they pump out the bass and crystal clear vocals!
I have about 30 hours listening to them and the bias is holding good.
Thanks for the great customer service and super fast shipping.
Stew (Posted on 5/13/16)
- Hifi Review by Sherod
So far I have about 50 hours on the new Ruby tubes. They seem to sound as good as the previous Penta KT88sc I had in before. They have held their bias perfectly. I hope you will have sufficient stock for a while. Have a great weekend.
(Posted on 3/19/16)