Tubes for the Dynakit Mark III Mono Amplifier

Tubes for the Dynakit Mark III Mono Amplifier

While you can select any of the vacuum tubes presented below to complete your tube set for the Dynakit Mark III amp, Dynakit recommends the following ...

  • 5AR4 - Mullard, Tungsol, Genalex, Sovtek
  • 6AN8A - NOS
  • 6550 - Tungsol
  • KT88 - Mullard, JJ
  • It is highly recommended that you purchase a matched pair of power tubes for this amp.

The Dynakit Mark III Mono Amplifier amplifier requires the following components:

× 1
5AR4
5AR4
Solid State Rectifier - Yellow Jacket® YJR, For 5AR4, 5U4, 5Y3
Vacuum Tube - 5AR4 / GZ34, JJ Electronics
Vacuum Tube - 5AR4, Sovtek
Vacuum Tube - 5AR4 STR, Tube Amp Doctor
Solid State Rectifier - For 5AR4, 5U4, 5Y3 Tubes
Vacuum Tube - GZ34 / 5AR4, Mullard Reissue
Vacuum Tube - 5AR4, Tung-Sol Reissue
Vacuum Tube - 5AR4 / GZ34 / U77, Genalex Gold Lion
Vacuum Tube - 5AR4 / GZ34, Classic Series, Psvane
Please make a selection above.

The YJR is a direct plug-in replacement adapter for use in most amplifiers that use 5AR4/GZ34, 5U4, 5Y3 or similar full-wave rectifier tubes. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel.

The JJ Electronic GZ34 / 5AR4 is rugged rectifier at a reasonable price. JJ has a reputation for building sturdy tubes and this one is no exception. Users report that the JJ GZ34 / 5AR4 is a reliable rectifier in their Vox, Fender, and hifi amplifiers.

Octal rectifier tube (Max DC output current = 250 mA)

Tube Amp Doctor 5AR4 Rectifier, Premium Selected. A faithful reproduction of the Mullard/VALVO GZ34. Pure power and the typical sag is the distinguishing characteristic of the most popular guitar amps of the 1960s guitar heroes till today.

Solid State Rectifier Direct plug-in replacement for 5AR4, 5U4 and 5Y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer. Use when less 'sag' is desired in the power supply; just switch back to the tube rectifier when 'sag' is desired.

Premium directly heated heavy duty rectifier Diode. Re-issue of the most popular rectifier valve ever built by Mullard. Helps extend the life of the other valves in the amplifier by allowing them to heat up before plate voltage is applied.

  • Low internal voltage drop & controlled heater warm up time
  • Excellent choice for both Hifi and instrument amplification
  • Replacement/upgrade for all 5AR4/GZ34 types
Tung Sol 5AR4 rectifier tube. Made in Russia. Premium directly heated heavy duty rectifier Diode. Helps extend the life of the other valves in the amplifier by allowing them to heat up before plate voltage is applied. Tung-Sol tubes reflect the best in vintage construction with unsurpassed tone and reliability.
  • Low internal voltage drop & controlled heater warm up time
  • Excellent choice for both Hifi and instrument amplification
  • Replacement/upgrade for all 5AR4/GZ34 types

Genalex Gold Lion U77 / GZ34 full-wave rectifier tube. Made in Russia.

The Psvane 5AR4 is a high quality heater-cathode twin diode designed for full-wave rectifier operation. Its high output current and small size make this octal-base tube a great choice for compact amplifiers. The Psvane 5AR4 is a great choice for a reliable 5AR4 / GZ34 replacement. The Psvane Classic Series is focused on the reproduction of popular vacuum tubes found in classic audio equipment. When designing the Classic Series, Psvane collected the most sought-after NOS tubes and analyzed each element of their construction, incorporating the most effective manufacturing techniques to produce stable tubes with excellent sound. Whether used in guitar amplifiers or hifi stereo systems, the Psvane Classic Series vacuum tubes excel in all applications. Psvane has been producing high quality vacuum tubes since 2011. The Psvane team originally formed in Shuguang’s high-end tube division but eventually split off to form their own brand.

$14.95 × 1
$21.95 × 1
$29.80 × 1
$34.20 × 1
$9.95 × 1
$58.70 × 1
$51.00 × 1
$62.90 × 1
$25.35 × 1
× 2
6550
6550
Vacuum Tube - 6550, Electro-Harmonix - Matched Pair
Vacuum Tube - KT88, Electro-Harmonix - Single
Vacuum Tube - KT88, JJ Electronics, Blue Glass - Single
Vacuum Tube - 6550, JJ Electronics - Apex Matched Pair
Vacuum Tube - 6550WE, Sovtek - Apex Matched Pair
Vacuum Tube - 6550, Tung-Sol Reissue - Apex Matched Pair
Vacuum Tube - 6550, JJ Electronics - Apex Burned-In Matched Pair
Vacuum Tube - 6550, Electro-Harmonix
Vacuum Tube - 6550, JJ Electronics
Vacuum Tube - 6550, Tung-Sol Reissue
Vacuum Tube - 6550WE, Sovtek
Vacuum Tube - KT88, JJ Electronics
Vacuum Tube - KT88, Mullard Reissue
Vacuum Tube - 6550A, Classic Series, Psvane
Please make a selection above.

Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.

Electro-Harmonix KT88 Vacuum Tube High power kinkless-tetrode for use in amplifiers such as the Marshall Major. This tube is a favorite of audiophiles. Can be used in place of 6550 for a more "round" bass signature.

Blue glass envelope. A sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. This tube has a tone that is warm and lively with a detailed and balance response.

The JJ Electronic 6550 is a robust tube built in the rugged fashion that JJ is famous for. At 35 Watts, these tubes have a warm round tone with a thick and defined low end. The JJ 6550 is an excellent choice for bass heads, tube organs, and Hi-Fi amplifiers.

The Sovtek 6550WE was designed to be the finest 6550 ever produced. Thicker plates, improved heat dissipation, higher transconductance, and increased linearity are just some of the inherent aspects of the new Sovtek super 6550s. The resulting performance advantages include 5% higher output power, increased reliability, greater headroom, and superior tone. The 6550WE features a metal-ringed base for increased power-handling capabilities.
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

The JJ Electronic 6550 is a robust tube built in the rugged fashion that JJ is famous for. At 35 Watts, these tubes have a warm round tone with a thick and defined low end. The JJ 6550 is an excellent choice for bass heads, tube organs, and Hi-Fi amplifiers.

Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.

The JJ Electronic 6550 is a robust tube built in the rugged fashion that JJ is famous for. At 35 Watts, these tubes have a warm round tone with a thick and defined low end. The JJ 6550 is an excellent choice for bass heads, tube organs, and Hi-Fi amplifiers.

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
The Sovtek 6550WE was designed to be the finest 6550 ever produced. Thicker plates, improved heat dissipation, higher transconductance, and increased linearity are just some of the inherent aspects of the new Sovtek super 6550s. The resulting performance advantages include 5% higher output power, increased reliability, greater headroom, and superior tone. The 6550WE features a metal-ringed base for increased power-handling capabilities.

A sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. This tube has a tone that is warm and lively with a detailed and balance response. The JJ KT88 is an excellent choice for Hi-Fi stereo equipment as well as guitar amplifiers. It can be used in place of 6550 tubes.

Premium Octal beam Tetrode, an exact copy of the KT88 valve manufactured by Marconi-Osram for Marshall in the late 1960s and 70s. Powerful, balanced and detailed soundstage with full bass.
  • Direct replacement for any 6550 types
  • Excellent replacement output valve for the Marshall Major, retains the original sound
  • Equally well suited for hifi

The Psvane 6550A is a beam pentode with an octal base rated for up to 42W of plate dissipation. The Psvane 6550A is designed specifically for audio spectrum power-amplification and can deliver plenty of power in a push pull configuration with smooth and balanced response. The Psvane Classic Series is focused on the reproduction of popular vacuum tubes found in classic audio equipment. When designing the Classic Series, Psvane collected the most sought-after NOS tubes and analyzed each element of their construction, incorporating the most effective manufacturing techniques to produce stable tubes with excellent sound. Whether used in guitar amplifiers or hifi stereo systems, the Psvane Classic Series vacuum tubes excel in all applications. Psvane has been producing high quality vacuum tubes since 2011. The Psvane team originally formed in Shuguang’s high-end tube division but eventually split off to form their own brand.

$137.90 × 1
$68.70 × 2
$71.85 × 1
$116.90 × 1
$137.70 × 1
$147.00 × 1
$119.80 × 1
$67.35 × 2
$56.95 × 2
$72.00 × 2
$67.35 × 2
$59.95 × 2
$72.20 × 2
$59.95 × 2
× 1
6AN8A
6AN8A
Vacuum Tube - 6AN8A, Triode, Pentode
Please make a selection above.

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 × 1
Total price for all components:
$0.00
Currently selected components:
5AR4:Not selected
6550:Not selected
6AN8A:Not selected