La serie Sovtek EL84 produce una distorsione imbattibile, morbida e calda. Sostituzione eccellente per amplificatori d'epoca come VOX AC-30 e simili, le Sovtek EL84 sono utilizzate da Fender, Crate e Peavey.

The JAN Philips 12AT7WC / ECC81 tube is a high quality military pre-amp tube that is preferred for guitar amps and high end audio. The JAN Philips 12AT7-WC is durable, reliable and provides great bang for the buck value. The 12AT7 tube type is equivalent to the European ECC81 tube and can be used in any 12AT7 or ECC81 circuit.