# Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.
Vacuum Tube - 12BA6 / HF93, Pentode, Remote Cut-Off
Pentode amplifier having a remote control grid characteristic and utilizing the miniature construction. As a RF amplifier, it is characterized by high transconductance and low grid-plate capacitance.
$8.90 Vacuum Tube - 6SJ7, Pentode, Sharp Cut-Off Metal sharp-cutoff pentode designed for use as a biased detector or high-gain amplifier.$6.90
Vacuum Tube - 12AX7 / ECC83, Svetlana
The Svetlana 12AX7 is a premium 12AX7 tube from Russia. Known for their smooth drive and clarity, these tubes are praised by both guitar players and HiFi users alike. The Svetlana 12AX7 is compatible in any 12AX7 or ECC83 position. “Svetlana tubes are quite simply the absolute best. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. Be sure to insist on genuine Svetlana vacuum tubes the next time you retube -- you'll be getting the absolute best possible tubes for any demanding application.” -Svetlana
$16.95 Vacuum Tube - EL34B, Tung-Sol Reissue Premium high-voltage power pentode, featuring improved materials and workmanship over the original EL34B. Higher impedance design with increased touch responsiveness. • Unique clipping characteristic with a hint of 6L6 sound • Velvety-smooth in HiFi applications, full & rich-sounding in guitar amps • 6CA7 equivalent Starting at$26.50
Vacuum Tube - EL84, Electro-Harmonix
Tube measurements are as follows:
• Height: 2.75” (without pins)*
• Diameter: 0.87” *

*Note: Due to the method of production in regards to the glass, measurements may vary slightly.
Starting at $12.95 Vacuum Tube - EL34 II, JJ Electronics, Pentode A different construction of the classic EL34 tube that offers a different tonal palette than the original. This tube has a more compact plate structure than standard EL34’s. The JJ EL34 II has an increased low to low-mid end with plenty of headroom to spare. The JJ EL34 II is stronger than the original but not harsh sounding in any way. Starting at$16.00
Vacuum Tube - 5881 / 6L6WGC, Sovtek
The 5881 is a very reliable tube that is widely used in many current production tube amplifiers. It has a warm tone with good 'bite.' This modern version is able to tolerate higher voltages than its 5881 / 6L6 cousins. The Sovtek 5881 delivers a warm, round tone that "sweetens" any vintage or modern guitar amp design. 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. Extremely consistent from piece to piece.
Starting at $20.65 Vacuum Tube - 6BA6 / EF93, Pentode, Remote Cut-Off Miniature remote-cutoff pentode primarily designed for use as a high-gain radio-frequency or intermediate-frequency amplifier. Features include small size, low grid-plate capacitance, and high transconductance$6.90
Vacuum Tube - 6K7G, Pentode, Remote Cut-Off, RF
The 6K7G is an indirectly heated pentode of the vari-mu (remote cut-off) type for use in the RF or IF stages of radio equipment.
$3.13 Save 50% Originally:$6.25
Vacuum Tube - 6V6GT, Chinese
Chinese 6V6GT Available in Singles, Matched Pairs or Matched Quads - please select from list.
Starting at $13.02 Partially Out of Stock Vacuum Tube - 5881, Tung-Sol Reissue Russian made reissue of the original Tungsol. The 5881 is the electrical equivalent to types 6L6 and 6L6G except that the plate and screen dissipation ratings have been increased approximately 20 percent. It embodies a complete mechanical redesign which results in greater resistance to shock and vibration. Starting at$23.65
Vacuum Tube - 5751, Tube Amp Doctor, Premium Selected
Low-noise Tube for Best Clean Tone! The TAD Selected 5751 is Tube Amp Doctor's first choice for noticeably improved clarity, smoothness, and a true vintage tone character for most guitar amps!
$24.95 Vacuum Tube - 6100 / 6C4WA, Philips ECG, Triode, Medium-MU Philips ECG, Triode, Medium-MU$4.95
Save 50%
Originally: $9.90 Vacuum Tube - 6AV6 / EBC91, Dual Diode, Triode Miniature duplex-diode, high-mu triode intended primarily for use as a combined detector, amplifier, and automatic-volume-control tube in radio receivers. The triode section incorporates a high amplification factor$5.90
Vacuum Tube - 5670 / 2C51W, Triode, Dual
Miniature medium-mu twin triode each section of which as a separate cathode connection. The tube is suited for use in a wide variety of general-purpose amplifier and mixer circuits as well as numerous multi-vibrator and oscillator applications.
$4.90 Vacuum Tube - 6550, Tung-Sol Reissue Copy of the original type 3 Tung-Sol 6550 made in the 1960s. Triple getter, carbonized screen, and gold plated grid. The current production benchmark of the classic 6550. Made in Saratov, Russia Starting at$45.95
Vacuum Tube - 5749 / 6BA6W, Pentode, Remote Cut-Off
Miniature remote-cutoff pentode intended for use as a high-gain radio frequency or intermediate-frequency amplifier. Its remote-cutoff characteristic makes it suitable for use in circuits to which it is desired to apply automatic-gain-control.
$4.90 Vacuum Tube - 6AN8A, Triode, Pentode Medium mu triode and a sharp cutoff pentode. The pentode section may be used as an IF amplifier or a reactance tube; the triode section is well suited for use in low-frequency-oscillator, sync clipper, sync separator, and phase splitter circuits.$15.90
Vacuum Tube - ECC99, JJ Electronics
The JJ Electronic ECC99 is a noval based dual triode. This tube features a rugged construction and is also available with gold pins. The ECC99 is typically used as a driver for power triodes in 2A3 and 300B amplifiers but can also be used as a power tube in small amps and headphone amps. This tube can also be a functional replacement for 5687, E182CC, 6840, and 6BL7 tubes. Note: Sockets on some of these types could have a different set-up.
Starting at $15.95 Vacuum Tube - 12AU7A / ECC82, Tube Amp Doctor, Premium Selected The Perfect Choice for Stereo Audio Applications - Ideal as a Balanced Driver. Latest revision providing great musical performance and rich tone. This TAD 12AU7A / ECC82 has especially strong systems which are selected to provide two symmetric triodes. The perfect choice for stereo audio applications and ideal as a balanced driver.$22.95
Vacuum Tube - 6BE6 / EK90, Heptode
Miniature heptode primarily designed to perform the combined functions of the mixer and oscillator in superheterodyne circuits in both the standard broadcast and FM bands.
$6.90 Vacuum Tube - 6SK7, Pentode, Remote Cut-Off, RF Remote-cutoff pentode. It is designed for use as a high-gain radio-frequency or intermediate-frequency amplifier in a radio receiver.$6.90
Vacuum Tube - 6L6WXT+, Sovtek
Higher in gain than the 5881WXT, with full base.
Sovtek is proud to announce the release of their new 6L6WXT+ vacuum tube. Modelled after the vintage RCA 6L6GC "blackplate," the Sovtek 6L6WXT+ features larger plate dimensions and improved grid structure for increased power handling capabilities. The 6L6WXT+ also features mica spacers with metal springs to eliminate tube rattle and microphonics. The Sovtek 6L6WXT+ yields a 20% higher output than the Sovtek 5881WXT and offers superior tone and overall performance to any 6L6 or KT66.
Starting at $24.95 Vacuum Tube - KT77, JJ Electronics A reproduction of the original tubes that captures the sound that made the KT77 famous. In their typical fashion, JJ has built this tube in a solid construction that is robust and highly reliable. This tube has more headroom than a typical EL34. This is an excellent tube for adding more power to the sound of an EL34 amp. Starting at$19.95
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