FOUR 6SN7GTB Tung-Sol tubes. This is a gorgeous tube, fitting for amplifiers new or old. Super linearity, low noise, and full performance ratings make this one of the best 6SN7 tubes ever made. The sound signature is on par with 5692 types. Excellent driver tube in high-end audio applications.
These are burned in and then each section on these tubes is precision matched at real world voltages. Don’t rely on vintage test equipment that inaccurately test at a fraction of working voltage.
The results are labeled on each tube. Use these tubes for applications that demand matched tubes.
These are fully tested by the factory at real-world voltages with state-of-the-art testing equipment. These also come with the factory 90 day warranty.
I have been selling tubes for more than ten years, buy with confidence!