Current filter
4 tubes, matched as quad 7027 is a beam power pentode with an octal base and power of 30 W. Suitable for Hi-Fi and guitar amplifiers. Very similar to 6L6, but with different pinout.
Files:
Single tube, not matched 7027 is a beam power pentode with an octal base and power of 30 W. Suitable for Hi-Fi and guitar amplifiers. Very similar to 6L6, but with different pinout.
2 tubes, matched as pair Improved JJ EL34, with a modified cathode. Hint: if you replace an EL34 with an E34L you should also check the bias.
4 tubes, matched as quad Improved JJ EL34, with a modified cathode. Hint: if you replace an EL34 with an E34L you should also check the bias.
Single tube, not matched Improved JJ EL34, with a modified cathode. Hint: if you replace an EL34 with an E34L you should also check the bias.
R.F. DOUBLE TRIODE E88CC is the European Name of 6922/6DJ8. It is often used for Hi-Fi applications. It provides very smooth mids and high end with a lot of detail. Files:
ECC802S is a long plated 12AU7 medium gain pre-amplifying double triode. Long plate provides a very rich and full sound from the deep bass to the high end. All JJ gold preamp tubes are selected within a close tolerance and handtested for best sound and quality. Furthermore all pins are gold plated to achieve best electrical contact. Files:
Sonically similar to the "normal" JJ 12AX7, but the overall sound is "fuller" and "stronger" with a more powerful bass. Visually, compared to the normal JJ 12AX7, the long anode plates stand out, as well as a slightly higher current. Suits well in guitar and bass amps, but also in audio and high-end areas. Note: Tubes equipped with long plates are commonly associated with a "warmer" or "richer" sound, whereas those with shorter plates tend to deliver a "tighter sound". However, tubes featuring long plates exhibit increased sensitivity to vibrations and mechanical disturbances, rendering them less ideal for critical applications.
Sonically similar to the "normal" JJ 12AX7, but the overall sound is "fuller" and "stronger" with a more powerful bass. Visually, compared to the normal JJ 12AX7, the long anode plates stand out, as well as a slightly higher current. Suits well in guitar and bass amps, but also in audio and high-end areas. All JJ gold preamp tubes are selected within a close tolerance and handtested for best sound and quality. Furthermore all pins are gold plated to achieve best electrical contact. What about the sound? It is still the famous and well known JJ brownsound - warm and smooth. Note: Tubes equipped with long plates are commonly associated with a "warmer" or "richer" sound, whereas those with shorter plates tend to deliver a "tighter sound". However, tubes featuring long plates exhibit increased sensitivity to vibrations and mechanical disturbances, rendering them less ideal for critical applications.
COMBINATED DOUBLE TRIODE ECC832 is 12DW7 pre-amplifying double triode. It combines 12AX7 and 12AU7, where the 12AX7 is used as 1st stage and the 12AU7 as 2nd stage. Files:
R.F. DOUBLE TRIODE ECC99 is a 9-pin double triode usually used as a driver for directly heated power triodes (i.e. 300B and 2A3), but in some applications can be used as power tube (headphones amps, small power amps...).
Datasheet
R.F. DOUBLE TRIODE ECC99 is a 9-pin double triode usually used as a driver for directly heated power triodes (i.e. 300B and 2A3), but in some applications can be used as power tube (headphones amps, small power amps...). All JJ GOLD preamptubes are selected within a close tolerance and handtested for best sound and quality. Furthermore all pins are gold plated to achieve best electrical contact.
PENTODE EF806S is a substitution for the EF86. It is a 9-pin pentode often used in microphones and in some amplifier designs can also be used on pre-amplifying stages. Files:
2 tubes, matched as pair Standard EL34 made by JJ with a smooth and dizzy sound. Limiting Values:
4 tubes, matched as quad Standard EL34 made by JJ with a smooth and dizzy sound. Limiting Values:
Single tube, not matched Standard EL34 made by JJ with a smooth and dizzy sound. Limiting Values:
2 tubes, matched as pair EL34 II has fuller low mids and low end but does not lose headroom in the high end. Stronger than regular JJ EL34 but not as aggressive as the JJ E34L.
4 tubes, matched as quad EL34 II has fuller low mids and low end but does not lose headroom in the high end. Stronger than regular JJ EL34 but not as aggressive as the JJ E34L.
Single tubes, not matched EL34 II has fuller low mids and low end but does not lose headroom in the high end. Stronger than regular JJ EL34 but not as aggressive as the JJ E34L.
Single unit, not matched
The EL509S is a modified version of the original EL509/EL519. Does not have a top plate-cap and has an 8-pin octal base. Can handle 700V and 42W plate dissipation. Popular in OTL applications.
JJ EL84 #05 - Soft Plus
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