5751 can be used in most 12AX7 circuits to achieve more headroom. It has a lower gain than the standard 12AX7. Good to rope the gain of a high gain amplifier.
ECC81 is 12AT7 medium gain pre-amplifying double triode. Can be also used as replacement for 12AX7 in many applications. Very smooth and warm sound. Very low microphonic. Good for phase inverters or reverb drivers.
ECC83S is 12AX7 high gain pre-amplifying double triode. Thanks to its design it also peforms with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end.
ECC83S is 12AX7 high gain pre-amplifying double triode. Thanks to its design it also peforms with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end.
6V6 S is a beam power pentode with octal base and a maximum plate dissipation of 14W. It has fat low end and full mid tones with very good tone separation and a smooth, clean high end. Known to be a very powerful 6V6 due to its robust construction. In general, a very balanced tone. It can be used also in some 6L6 amplifiers
6L6GC is a beam power pentode with an octal base and power of 30W for use in 6L6 amplifiers. It has a lot of headroom and a fat, solid tone. Thanks to its robust construction it is very reliable