Groove Tubes have improved harmonic balance, longer life, matched gain to frequency response ratios and require no rebiasing when replaced in color-coded sets. Red - clean; blue - dirty; white - medium.
Groove Tubes have improved harmonic balance, longer life, matched gain to frequency response ratios and require no rebiasing when replaced in color-coded sets. Red - clean; blue - dirty; white - medium.
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.
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.