EL34 / 6CA7 / KT77
EL34 BackgroundEL34 is a high voltage, high output audio power tube in a compact package. EL34 was used in classic Marshalls, known for its legendary British tone.
In HiFi audio, EL34 delivers exceptionally smooth mid-range, and is a very good match for female vocals and horns.
When to change EL34?EL34 dissipates a lot of heat in a compact form factor. This invariably wears out the tube, causing it to lose both output and frequency response. It is recommended that you replace power tubes at regular interval to get best results.
EL34 alternatives6CA7 and KT77 are drop-in replacement for EL34. They have different internals and different sonic quality, closer to that of beam tetrodes such as 6550.
Our EL34 stocksOur EL34 tubes are burned-in for 24 hours for maxmium stability. They are then precision matched under real operating condition to provide maximum results.
We stock EL34 Tubes in pairs (2 tubes) and quads (4 tubes). We often have sextet (6) or octet (8) sets available, so please inquire.
Not sure which one? Refer to our EL34 Guide.
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Chinese made EL34B is an excellent value. We burn-in and match them at operating conditions seen in amps like Marshall's and Mesa Boogie's where these tubes excel.
Price is for a matching quad of EL34B.
Excellent in guitar amps, Electro-Harmonix EL34 delivers drive and distortion in guitar amps at a very good price point. Price is for a matched pair (two tubes).
Matching set of 4 tubes.
Plug-in compatible with any EL34, but has slightly different parameter. Top choice amongst guitar players including Yngwie Malmsteen for clean yet thick tone. Excellent in audiophile applications with smooth but strong low mids. Price is for a matched pair.
Price is for a matching quad.
This is a brand new design EL34 produced in Russia. It has similar construction as EL34-SV, but has different grid windings which gives it a definitely unique sound in both guitar and HiFi amps.
The price is for a matched quad of EL34 Russian Mullard.
The price is for a matched sextet(6 tubes) of EL34 Russian Mullard.
This is the all-new Svetlana EL34 available only in US. Meticulous quality, excellent sonics. Awesome in guitar amps, and it sounds rich and smooth in HiFi Amps. Price is for a matched pair.
Price is for a matching quad of Svetlana EL34.
TungSol EL34B provides a full rich body in guitar amps. In audio application, it has velvet smooth mid-range supported by good bottom and top end balance. This is an excellent EL34 if you are looking to upgrade from tiring stock tubes in your amplifier.
Price is for a matched pair (two tubes).
Price is for a matched quad (4 tubes).
More headroom, very nice dynamics, good bass response. Excellent for audiophile application as well as bass amp. Price is for a?@matched pair.
Price is for a matching quad of SED EL34.
Electro-Harmonix version of Big Bottle 6CA7. This is different than the thin bottle EL34. It's a reproduction of Phillips 6CA7, bigger and more high power capable with tone closer to 6L6 voicing at EL34 output level. Price is for a matched pair.
Price is for a matched quad.
Electro-Harmonix version of Big Bottle 6CA7. This is different than the thin bottle EL34. It's a reproduction of Phillips 6CA7, bigger and more high power capable with tone closer to 6L6 voicing at EL34 output level. Price is for a matched sextet(6).
6CA7 JJ is a replacement for any EL34 / 6CA7 tubes. It sounds just a tad bigger and bolder than regular EL34, and is very solidly built. Price is for a matched pair, inquire about quads.
The Genalex Gold Lion KT77 is a high quality tube with rugged construction. This KT77 gets rave reviews from our customers. with excellent dynamics and good high end resolutions. In a guitar amp, it gives good mids but with nice open brightness of 6L6.
Price is for a matching quad (4 tubes) of Gold Lion KT77 tubes.
KT77 is an excellent sounding tube now available from JJ. It is a faithful reproduction of GEC KT77 which was designed specifically for audio purpose. KT77 can replace 6CA7 and EL34 tubes.
Note: Early production of JJ KT77 had thinner pins which caused issues in amps with worn sockets. Our current stock does not have this problem.
Price is for a matched quad (4 tubes) of JJ KT77.
- 12AT7 / ECC81
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