6L6 / 5881 / KT66

2 tubes, matched as pair

5881 Tube by JJ

4 tubes, matched as quad

5881 Tube by JJ

Single tube, not matched

5881 Tube by JJ

JJ 6L6 - #16 - Mesa RED

• Corresponds to Mesa Color Code RED
• Price for one tube.

JJ 6L6 - #17 - HOT GRADE

• Hot Grade, works perfect with most 6L6 amps
• Recommended for Peaveay 5150 and similar
• Price for one tube.

JJ 6L6 - #19 - Mesa GREEN - GRAY

• Corresponds to Mesa Color Code GREEN - GRAY
• Price for one tube.
• Very Strong!

Maximum quantity per order: 1 quad tubes, matched as quad

KT66 is a beam power pentode with an octal base and power of 25W. It has a powerful sound with a lot of headroom.

Files:

• Datasheet

Bias probe for indirect measurement of quiescent bias current of a tube. The adapter is inserted between the tube and the socket and gets connected to a standard voltmeter (not included). Pay attention to the quality of the measuring device and sufficiently charged batteries!

2 tubes, matched as pair

The Sovtek 5881 delivers a warm, round tone that "sweetens" any vintage or modern guitar amp design. Chances are if an amp uses 6L6-style output tubes, it has Sovtek 5881's in its sockets. Built to rigid military standards, the 5881 will tolerate higher voltages than any other 6L6. In fact, they're frequently used as replacements for the old 7027 model in vintage Ampegs.

4 tubes, matched as quad

The Sovtek 5881 delivers a warm, round tone that "sweetens" any vintage or modern guitar amp design. Chances are if an amp uses 6L6-style output tubes, it has Sovtek 5881's in its sockets. Built to rigid military standards, the 5881 will tolerate higher voltages than any other 6L6. In fact, they're frequently used as replacements for the old 7027 model in vintage Ampegs.

Single tube, not matched

The Sovtek 5881 delivers a warm, round tone that "sweetens" any vintage or modern guitar amp design. Chances are if an amp uses 6L6-style output tubes, it has Sovtek 5881's in its sockets. Built to rigid military standards, the 5881 will tolerate higher voltages than any other 6L6. In fact, they're frequently used as replacements for the old 7027 model in vintage Ampegs.

Sovtek 6L6 WXT+ / STR430 - #16 - Mesa RED

• Corresponds to Mesa Color Code RED
• Price for one tube.

Sovtek 6L6 WXT+ / STR430 - #17 - HOT GRADE

• Hot Grade, works perfect with most 6L6 amps
• Recommended for Peaveay 5150 and similar
• Price for one tube.

Sovtek 6L6 WXT+ / STR430 - #19 - Mesa GRAY

• Corresponds to Mesa Color Code GRAY
• Price for one tube.

2 tubes, matched as pair

The 6L6WXT+ features larger plate dimensions and 20 percent higher output than the Sovtek 5881WXT. Extremely low noise and a excellent detailed and harmonic sound, plenty of power and very easy to handle - even while using in "hot" setups.

4 tubes, matched as quad

The 6L6WXT+ features larger plate dimensions and 20 percent higher output than the Sovtek 5881WXT. Extremely low noise and a excellent detailed and harmonic sound, plenty of power and very easy to handle - even while using in "hot" setups.

Single tube, not matched

The 6L6WXT+ features larger plate dimensions and 20 percent higher output than the Sovtek 5881WXT. Extremely low noise and a excellent detailed and harmonic sound, plenty of power and very easy to handle - even while using in "hot" setups.