The Hickok 800 is a respected mutual conductance tube tester, providing accurate Gm readings along with tests for shorts, leakage, and emission. Compact, reliable, and easy to use, it makes an excellent choice for audio technicians, restorers, and collectors.
Restoration:
- New Meter – replaced the original factory meter
- Solid-state rectifier – replaced #83 tube rectifier for improved stability and reduced transformer loading
- Capacitors replaced – capacitors prone to failure replaced
- Resistors replaced – resistors affecting calibration and accuracy replaced
- Power Cord – new power cord for safety
- Calibrated and tested – calibrated to factory specifications and checked for accuracy across tube types
- New Roll Chart – 1970 edition for expanded tube coverage
- Manual – Copy of the Hickok 800A manual
Key Features:
- Tests newer Octal, Loctal, 7-pin and 9-pin miniature, and older style 4-pn, 5-pin, 6-pin and 7-pin tubes.
- Accurate mutual conductance (Gm) tube testing
- Tests for shorts, and leakage
- Compact and user-friendly design
- Restored and calibrated for dependable operation
- Case and panel in good condition with normal wear from age
Condition:
Electrically, this Hickok 800 is in excellent condition and has been calibrated for accurate operation. The case is solid and presentable with normal cosmetic wear for its age. I cleaned and tested all controls, switches, and sockets for smooth, reliable use.
This is a clean, restored Hickok 800 that is ready for service. A great choice for anyone needing a dependable, professional-grade tube tester.
The manual is available to download here





This Hickok 800 tube tester is $765 plus shipping to the lower 48 states only because of the weight.
Contact Me if you are interested in this tube tester.