Mullard 12AT7 ECC81 Preamp Tube This Mullard 12AT7 ECC81 preamp tube is a very good choice for Hi-Fi preamps, driver stages, and guitar amp reverb circuits. The Mullard 12AT7 is original production from Great Britain. When should I use a Mullard 12AT7 Preamp Tube? This 12AT7 sounds great in hi-fi tube audio preamps and amplifiers where it’s low noise and smooth sound really shine. This tube will suit many Fenders as well as vintage Marshalls – check out our tube sets here. The Mullard 12AT7 Preamp Tube type is equivalent to the European ECC81 tube and can be used in any 12AT7 or ECC81 circuit. For more technical information on the 12AT7 ECC81 vacuum tube, read here.
