TAD Tube Amp Doctor 12DW7/7247, Premium Selected
Description:
Asymmetric double triode as used in select amplifiers such as many Swarts amps and the Dr. Z Surgical Steel.
Q: When does a preamp tube become a Premium Selected tube?
A: 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
TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties)
for the quality criteria mentioned above.
Product Information
Product Information
Shipping & Returns
Shipping & Returns


TAD Tube Amp Doctor 12DW7/7247, Premium Selected
TAD Tube Amp Doctor 12DW7/7247, Premium Selected
Description:
Asymmetric double triode as used in select amplifiers such as many Swarts amps and the Dr. Z Surgical Steel.
Q: When does a preamp tube become a Premium Selected tube?
A: 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
TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties)
for the quality criteria mentioned above.
Original: $24.50
-65%$24.50
$8.57Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description:
Asymmetric double triode as used in select amplifiers such as many Swarts amps and the Dr. Z Surgical Steel.
Q: When does a preamp tube become a Premium Selected tube?
A: 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
TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties)
for the quality criteria mentioned above.















