JJ ELECTRONICS KT77, matched quartet

JJ's KT77 has great power handling capabilities and exceptional sound, resulting a tube with a surprising value for money. It can be used in any amplifier that mounts this stock tube, it can also replace any EL34 or 6CA7.

Works great on vintage guitar amps sourced from the EL34, like Marshall's. It is a great replacement in HiFi amplifiers that carry the EL34 of origin, since it provides the same presence in bass and mids as these, but with an extension and exceptional definition in highs.