Description | Econco Division, a wholly owned subsidiary of CPI, has been a recognized leader in rebuilt power tubes since 1969. Its 40,000 square-foot facility incorporates state-of-the-art testing systems which ensure production consistency and product reliability. Tubes sent in for rebuild are given a complete internal inspection and failure analysis. They are then rebuilt by hand and retested to the original tube specifications. Econco maintains an extensive inventory of rebuilt tubes for immediate shipment to their worldwide customer base.