The GE 6SN7 GTA vintage tube was an upgraded version of the 6SN7GT. It offered a max heat rating of 450V with 5 watts per system with a 7.5-watt total. This vintage tube was used mainly for use as an audio transmission device for televisions and amplifiers. Today, they are helping to restore vintage tube televisions and AM radios back to their original condition. It is inspected prior to being shipped out to locate any filament leakage that can greatly affect the audio results of the tube. Installation instructions are included with special help for troubleshooting any issues that may arise after installation is completed.