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In this KT88 tube, a new geometry is utilized to reduce odd order harmonics for a sweet top end while the peak power is extended to improve low frequency response. A new glass formula body ensures long life and improved reliability.

The KT88 Mullard is an exact copy of the KT88 valves that were manufactured by Marconi-Osram for Marshall in the late 1960s and 1970s. Excellent replacement output valve for the Marshall Major to retain the original sound or for any amp where you want a warm, lush sound.

KR Audio KT88 Matched Quad. IN STOCK! These KT88’s are the best brand we have ever tested. Beautifully open, dynamic tight bass, gorgeous mids and highs, with a sweetness that all tube aficionados are looking for.

New 4x Genalex Gold Lion KT88 | Matched Quad / Quartet / Four Power Tubes | Free Ship

The JJ KT88 is a modern replacement for all classic KT88 applications. They can also be used in place of 6550's when space allows. Tonally these tubes sound exactly like they look, huge! As with the original GEC's, the JJ KT88's can develop 50 watts per tube in the right push-pull applications (Ampeg, Hiwatt, Sound City).

Electro-Harmonix KT88 Vacuum Tube High power kinkless-tetrode for use in amplifiers such as the Marshall Major. This tube is a favorite of audiophiles. Can be used in place of 6550 for a more "round" bass signature. Reverb has your back if your …