6L6GC Double Mica

The JJ 6L6GC Double Mica is a factory modified version of JJ’s standard 6L6GC. We worked closely with JJ on the development of this tube, and it’s available exclusively at Eurotubes.

Since the dawn of tubes mechanical noise has been a problem. With modern compact combo amps the power tubes are often placed ground zero next to the internal speaker. The back-waves and mechanical excitation from this will eventually lead to tube rattle. Whether you’re dealing with vintage tubes, modern tubes, tube tubes, the only 100% cure for tube rattle is switching to a proper head/cab configuration. Short of that we have the Double Mica 6L6GC and 6V6S, which are engineered specifically to mitigate tube rattle in combo amps.

The JJ 6L6GC Double Mica sounds and performs identically to the standard JJ 6L6GC, but with radically reduced susceptibility to mechanical noise (tube rattle) in combo amplifiers. With that in mind we only suggest these tubes for combo applications, as there’s no other benefit to using them beyond mitigating the mechanical noise that occurs due to the abusive nature of combo amps.

General JJ 6L6GC info: The JJ 6L6GC is a modern replacement for all classic 6L6 applications, including 5881’s where space allows. These tubes also hold up well in high plate voltage applications such as Bogner and MusicMan amps.

The JJ 6L6GC is beautifully made and it sounds as good as it looks. The lows are deep, big and round. The mids are very harmonically rich and natural while the highs are thick, creamy and very detailed. This tube has a tight and muscular response. This is THE tube for Peavey, Fender, Mesa, Soldano, Bogner ect.

A note for Ampeg users. We regularly use the JJ 6L6GC in Ampeg applications that originally ran 7027’s. Most of the 7027 equipped Ampeg’s are wired up to accommodate either 7027’s or 6L6GC’s ,and the JJ 6L6GC meets all 7027 specifications aside from the extra pin #1 and pin #6 internal jumpers. For all other 7027 applications JJ builds their 6L6GC with a 7027 specific pin out and we generally have them in stock for an additional cost.

After a 24 hour burn in all power tubes are tested for noise and matched at multiple operating points for plate current (± one milliamp) and transconductance. Please leave us a note in the comments section as to what amp they’re going into and or if you’re looking for a specific grade.