The EICO 667 is a compact, efficient tube tester designed for serious hobbyists and technicians alike. Built in the 1960s, this unit supports a wide range of vintage tube types and is ideal for checking tube condition quickly and accurately. It also comes with a one-year warranty for your peace of mind. See warranty details here.
Restoration:
- Capacitors replaced – capacitors prone to failure replaced
- Resistors Replaced – resistors affecting calibration and accuracy replaced
- Calibration and test – calibrated to factory specifications and tested with known quality tubes
- Check Solder Joints – many EICO 667 tube testers were kits and the solder joints were checked and fixed as needed
Key Features:
- Dynamic Conductance Testing – is more sensitive than basic emissions testers
- Wide Tube Compatibility – tests most Octal, Loctal, Compactron and 7-, 9-pin tubes
- Shorts & Leakage Checks – built-in switch matrix for simple diagnostics
- Compact, Bench-Friendly Design – great for small workspaces or portable use
- Analog Meter – large, clear merit scale for quick assessments
- Line Voltage Adjustment – ensures consistent and accurate readings
- Internal Roll Chart – easy setup for hundreds of tube types
Condition:
I have fully restored and calibrated this tube tester. All failure prone capacitors replaced, contacts cleaned, and unit verified with known-good reference tubes. Includes updated power cord.
The EICO 667 is a dependable tester perfect for audio techs, restorers, and collectors looking for a reliable solution without the complexity of high-end mutual conductance testers.
The deck on this tube tester is very clean.
The case shows signs of wear but I don’t think the tube tester was used that much. The wear on the case is probably from years of storage.
The manual is available to download here
The EICO 667 tube tester is $325 with free shipping to the lower 48 states.
Contact Me if you are interested in this tube tester.
