The AT1000 is notoriously strict with these sweep tubes. These rarely test as NOS even before they've been used!
Your tubes have been fully tested on a computer-regulated, USA-made Amplitrex AT1000 on Fixed Bias setting with WEAK results. They have also passed shorts and gas tests, but did not meet our requirements for a used, good tube because of weak results in GM or plate current or both. They might work in some circuits, but performance is NOT guaranteed. The tubes might have mechanical wear or have the label rubbed off - these are very old! Tubes that test used good or like new (tNOS) are often available in a separate listing. Only tNOS and Used Good tubes are eligible for our 60-day performance guarantee.
OPTIONS (use offer feature in Reverb):
Want a regular white box? $1 extra per tube
Want a tube that's packed in its original box? $3 extra per tube
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 5 months ago |
|---|---|
| Condition | Poor (Used) Poor condition gear may not work properly but can still perform most functions.Learn more |
| Brand | |
| Model |
|
| Categories | |
| Year |
|
| Made In |
|
Product safety information may be available here.






