The original US-made mil. grade JAN version in TAD Premium NOS-selection quality. This tube is used in old Fender amps or hi-fi applications and produces a smooth reverb. It replaces the 6201, E81CC and ECC801 and upgrades ECC81 and 12AT7. Manufacturer: Philips USA as JAN 12AT7WC (6201)
All preamp tubes labeled Premium Selected have passed the following tests:
- Low Noise Test
- Microphonic Test
- Gain Test
- Sonic Tests
- Shock Tests
- Listening Tests
- Balanced Output Test
