Tubes for the Dynakit ST 70 Stereo Amplifier

Tubes for the Dynakit ST 70 Stereo Amplifier

While you can select any of the vacuum tubes presented below to complete your tube set for the Dynakit ST 70 amp, Dynakit recommends following...

  • 5AR4 - Mullard, Tungsol, Genalex, Sovtek
  • 7199 or 6GH8A with adapter - NOS
  • EL34 - JJ
  • 6CA7 - EH
  • KT77 - Genalex
  • It is highly recommended that you purchase a matched quad of power tubes for this amp.

The Dynakit ST 70 Stereo 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
$34.95 × 1
$9.95 × 1
$58.70 × 1
$51.00 × 1
$62.90 × 1
$26.95 × 1
× 2
7199
7199
Vacuum Tube - 6GH8A, Triode, Pentode
Vacuum Tube - 7199, Triode, Pentode
Adapter - use 6GH8A Instead of 7199 tube, 6GH8A Included
Please make a selection above.

Miniature tube which contains a sharp-cutoff pentode and a medium-mu triode. Each section has a separate cathode and is electrically independent.

Triode-pentode designed primarily for high fidelity audio applications. The pentode section is particularly suited to preamplifier service while the triode section is intended for use as a phase inverter.

Includes:

  • (1) T-7199-ADT
  • (1) T-6GH8A
$6.90 × 2
$69.90 × 2
$15.95 × 2
× 4
EL34
EL34
Vacuum Tube - E34L, JJ Electronics, Blue Glass - Single
Vacuum Tube - EL34, Electro-Harmonix - Single
Vacuum Tube - KT77, Genalex Gold Lion - Matched Pair
Vacuum Tube - KT77, Genalex Gold Lion - Matched Quad
Vacuum Tube - EL34, JJ Electronics - Apex Matched Pair
Vacuum Tube - EL34, JJ Electronics - Apex Matched Quad
Vacuum Tube - E34L, JJ Electronics - Apex Matched Pair
Vacuum Tube - E34L, JJ Electronics - Apex Matched Quad
Vacuum Tube - 6CA7, JJ Electronics - Apex Matched Pair
Vacuum Tube - 6CA7, JJ Electronics - Apex Matched Quad
Vacuum Tube - KT77, JJ Electronics - Apex Matched Pair
Vacuum Tube - KT77, JJ Electronics - Apex Matched Quad
Vacuum Tube - EL34 II, JJ Electronics, Pentode - Apex Matched Pair
Vacuum Tube - EL34 II, JJ Electronics, Pentode - Apex Matched Quad
Vacuum Tube - EL34, Electro-Harmonix - Apex Matched Pair
Vacuum Tube - EL34, Electro-Harmonix - Apex Matched Quad
Vacuum Tube - EL34, Mullard Reissue - Apex Matched Pair
Vacuum Tube - EL34, Mullard Reissue - Apex Matched Quad
Vacuum Tube - EL34B, Tung-Sol Reissue - Apex Matched Pair
Vacuum Tube - EL34B, Tung-Sol Reissue - Apex Matched Quad
Vacuum Tube - 6CA7, Electro-Harmonix - Matched Pair
Vacuum Tube - 6CA7, Electro-Harmonix - Matched Quad
Vacuum Tube - EL34, JJ Electronics - Apex Burned-In Matched Pair
Vacuum Tube - EL34, JJ Electronics - Apex Burned-In Matched Quad
Vacuum Tube - E34L, JJ Electronics - Apex Burned-In Matched Pair
Vacuum Tube - E34L, JJ Electronics - Apex Burned-In Matched Quad
Vacuum Tube - 6CA7, JJ Electronics - Apex Burned-In Matched Pair
Vacuum Tube - 6CA7, JJ Electronics - Apex Burned-In Matched Quad
Vacuum Tube - EL34C, Classic Series, Psvane - Apex Matched Pair
Vacuum Tube - EL34C, Classic Series, Psvane - Apex Matched Quad
Vacuum Tube - 6CA7, Electro-Harmonix
Vacuum Tube - 6CA7, JJ Electronics
Vacuum Tube - E34L, JJ Electronics
Vacuum Tube - EL34, JJ Electronics
Vacuum Tube - EL34, Mullard Reissue
Vacuum Tube - EL34B, Tung-Sol Reissue
Vacuum Tube - KT77, JJ Electronics
Vacuum Tube - KT77, Genalex Gold Lion
Vacuum Tube - EL34 II, JJ Electronics, Pentode
Vacuum Tube - EL34C, Classic Series, Psvane
Please make a selection above.

Blue glass envelope. The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

Superior "Black base" high-voltage power pentode. Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s. Perfect EL34 for vintage equipment and for improved performance of modern amps. Extremely musical and predictable, with a sound that is rich, smooth, and detailed without being edgy.

Genalex Gold Lion KT77 beam-power tetrode tube. Made in Russia. A beam tetrode with an absolute maximum anode dissipation rating of 32 watts. The KT77 is designed for use in the output stage of an af amplifier. Two valves in Class AB1 give a continuous output of over 70 W.
Genalex Gold Lion KT77 beam-power tetrode tube. Made in Russia. A beam tetrode with an absolute maximum anode dissipation rating of 32 watts. The KT77 is designed for use in the output stage of an af amplifier. Two valves in Class AB1 give a continuous output of over 70 W.

Another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

Another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.

A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.

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.

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.

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.

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.

Superior "Black base" high-voltage power pentode. Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s. Perfect EL34 for vintage equipment and for improved performance of modern amps. Extremely musical and predictable, with a sound that is rich, smooth, and detailed without being edgy.

Superior "Black base" high-voltage power pentode. Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s. Perfect EL34 for vintage equipment and for improved performance of modern amps. Extremely musical and predictable, with a sound that is rich, smooth, and detailed without being edgy.

Premium high-voltage power pentode. An extremely faithful reissue of the XF2 Mullard EL34 from the 1960s.

Premium high-voltage power pentode. An extremely faithful reissue of the XF2 Mullard EL34 from the 1960s.

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

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

Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.

Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.

Another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

Another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.

A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.

The Psvane EL34 is a high quality octal power tube with a maximum plate power of 25W. Psvane improved the plate structure of the classic EL34B to produce a tube with increased reliability. The Psvane EL34C offers classic British tone in any amp. 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.

The Psvane EL34 is a high quality octal power tube with a maximum plate power of 25W. Psvane improved the plate structure of the classic EL34B to produce a tube with increased reliability. The Psvane EL34C offers classic British tone in any amp. 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.

Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.

A true to form reproduction of a classic tube that will work in most EL34 amps. The 6CA7 is often considered the American cousin to the British EL34. Sonically, this tube is closer to a 6L6 than an EL34 but without the sometimes harsh high end of the 6L6.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

Another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

Premium high-voltage power pentode. An extremely faithful reissue of the XF2 Mullard EL34 from the 1960s.

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

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.

Genalex Gold Lion KT77 beam-power tetrode tube. Made in Russia. A beam tetrode with an absolute maximum anode dissipation rating of 32 watts. The KT77 is designed for use in the output stage of an af amplifier. Two valves in Class AB1 give a continuous output of over 70 W.

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.

The Psvane EL34 is a high quality octal power tube with a maximum plate power of 25W. Psvane improved the plate structure of the classic EL34B to produce a tube with increased reliability. The Psvane EL34C offers classic British tone in any amp. 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.

$30.69 × 4
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Total price for all components:
$0.00
Currently selected components:
5AR4:Not selected
7199:Not selected
EL34:Not selected