The new GT12AX7M is as close to an exact reissue of the original Mullard 12AX7/ECC83 dual triode preamp tube as we could develop. Some people feel this is one of the ultimate vintage 12AX7 tubes.
The Groove Tubes 12AX7M is a dual-triode vacuum tube based on the highly sought after Mullard 12AX7, which went out of production in the late 60's.
Its unique triple mica design reduces tube hum and microphonics, and gives performance stability under the most demanding conditions, such as high gain tube guitar amps sitting on 4x12 cabs.
This tube delivers rich, harmonically complex tone and midrange warmth that is just not available in any other currently manufactured tube today.
The new 12AX7M is an excellent choice as a replacement tube for any amplifier design using a 12AX7, ECC83, or 7025 preamp tube. “Of course, the real test is how it sounds,” continued Pittman. “Our new 12AX7M will really ‘wake up' an old (or new) Fender, Ampeg, or Marshall tube amp!”
