The AT1000 can test many popular audio and industrial tubes. Some tubes require an optional socket adapter to test. There is a list of tubes here.

The limited warranty covers parts and labor for a period of one year after purchase. See Warranty for details.

No. Unlike vintage tube testers the AT1000 uses precision components in carefully designed circuits to provide stable, repeatable, precision measurements. Calibration is normally not required unless certain components are replaced. Calibration is proven to remain within specifications for longer than 12 years of normal use.

The AT1000 will test tubes right out of the box without a computer. A PC computer can be connected via standard USB, to provide computer controlled testing, plotting tube characteristic plate curves, and saving and printing of test results. Test result labels can be printed with an optional Brother QL Series label printer. The software is not directly Mac compatible. The PC software is provided free of charge and without warranty with the purchase of an AT1000.

Tubes and/or tube sections (example: 12AX7 twin triode) can be matched by comparing Emission and/or GM measurements, and grouping pairs, quads, etc. with comparable results.