Like New: Open box product with no signs of use.
Replaced the R-F-T ECC81 Vacuum Tube
GE ECC81 replacement vacuum tube for use in the TELEFUNKEN AR-51 and AR-70 STEREO microphones. GE ECC81 vacuum tube for use in the TELEFUNKEN AR-51 and AR-70 STEREO microphone systems. This tube replaced the R-F-T ECC81 that was used from 2009 to the end of 2014 in both microphones. Also known by their US military designation of 6201, these tubes were built in the USA by General Electric.