After extensive research and engineering, New Sensor Corp. has reissued the famed Genalex Gold Lion KT77 vacuum tube. This tube has been recreated down to the finest detail for exceptional performance and sound quality.

For audiophiles, the Genalex/Gold Lion KT77 power tubes have full, yet tight and dynamic lows. They have great clarity in the mid-range as well, and extended highs. Many audiophiles that have previously enjoyed the Winged “C”/SED EL34 tubes have reported that these KT77 tubes are noticeably better.

From our review in guitar amps: “The Gold Lion KT77 is a drop in replacement for an EL34 or 6CA7. The sound however is not typical of an EL34 or 6CA7. It is more of a hybrid. The tube delivers all the mid punch you would expect in an EL34 but also has a top end that is more open and bright. It’s definitely got a bit of a 6L6 designed into it. I tested it in Marshall 2205 50w head and was able to get that 70’s rock sound but with some bias adjustment could also dial in a VOX-like chime.”