 Musiciansfriend | THD Triode Yellow Jacket for Uni-Bivalve Duet
The YJUNIV is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s i… $100.00 - Buy online In stock
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 Musiciansfriend | THD Triode Yellow Jacket for Uni-Bivalve Single
The YJUNIV is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s i… $100.00 - Buy online In stock
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 Musiciansfriend | THD YJ20D Yellow Jacket Cathode Duet Non Power Reducing
An adapter that permits the use of an EL84 power tube in place of a 6V6 in cathode-bias amps without dropping the power. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, screw the ground wires u… $118.00 - Buy online In stock
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 Musiciansfriend | THD Triode Yellow Jacket for 6V6 Amps Duet
The YJ20S is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s in… $118.00 - Buy online In stock
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 Musiciansfriend | THD Triode Yellow Jacket for 6V6 Amps Single
The YJ20S is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s in… $118.00 - Buy online In stock
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 Musiciansfriend | THD Triode Yellow Jacket for 6L6/EL34/6550 Amps
The YJS is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s into… $118.00 - Buy online In stock
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 Musiciansfriend | THD Triode Yellow Jacket for Cathode Biased Amps
The YJC is an adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in cathode-biased amps. There are no adjustments to make and no modifications necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s… $118.00 - Buy online In stock
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 Musiciansfriend | THD YJSHORTD Yellow Jacket Short Standard Duet
An adapter that permits the use of an EL84 power tube in place of a 6L6, EL34, or 6550 in grid-bias amps. There are no adjustments to make and no modifications are necessary. You simply plug the Yellow Jacket into the amp's output tube sockets, plug the provided EL84s into the Ye… $144.00 - Buy online In stock
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 Musiciansfriend | THD Hot Plate Attenuator
The THD Hot Plate Attenuator is a power attenuator and noise reducer that lets you attain the incredible sound of your amp running at high output and full distortion but at recording, small club, and neighbor-friendly volumes. It also makes a perfect dummy load.A power attenuator… $329.00 - Buy online In stock
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 Musiciansfriend | THD 2x12 Ported Extension Cabinet
The THD 2-12 Extension Cabinet is the key to the magic between your fingers and your ears. Delivering a sound that is deep, smooth, clear, focused, and sweet, this cabinet truly is a vital element for improving the tone chain.The Ported Extension Cab is a bass-reflex design cabin… $679.00 - Buy online In stock
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 Musiciansfriend | THD UniValve 15W Class A Amplifier Head
The THD UniValve 15W Class A Amplifier Head delivers tones from smooth and clear to warm and full to aggressive overdrive. The single-ended Class A circuit design uses the highest-quality parts and hand-built construction for clean and faultless operation.The single output tube c… $999.00 - Buy online In stock
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 Musiciansfriend | THD 4-12 Guitar Speaker Cabinet Black
The THD 4-12 Cab is a bass-reflex design cabinet with a slot-port in the rear instead of the more common tube port in the front. Unlike a tube-port, there is no chance of "whistling through the slot-port in THD's cabinets. The slot-port being shallow, but wide, gives a lot of rea… $999.00 - Buy online On order
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 Musiciansfriend | THD Univalve Rackmounted Guitar Amp Head
The THD UniValve Rackmounted Guitar Amplifier Head is a single-ended class A amplifier head with a single output tube that can be switched at will among many octal-based power tubes, including 6L6, EL34, 6550, KT90, KT88, KT77 and KT66, for different tones without re-biasing the … $1119.00 - Buy online On order

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 Musiciansfriend | THD BiValve-30 30W Class A Amplifier Head
The THD BiValve-30 30W Class A Amplifier Head is a pure Class A design with 2 output tubes wired in parallel and combined through a special output transformer to deliver up to 30W. It accepts almost any type of output or preamp tube without bias adjustment even in combination for… $1529.00 - Buy online In stock
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 Musiciansfriend | THD BiValve Rack-mounted Guitar Amp Head
Like the UniValve, the THD BiValve Rack-mounted Guitar Amp Head is a single-ended pure Class A design. However, it has two output valves that are wired in parallel and combined through a special output transformer to deliver up to around 30 watts. You can use almost any output va… $1629.00 - Buy online On order

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 Musiciansfriend | THD Flexi-50 50W/20W Class AB Amplifier Head
The precision, hand-built, single-channel THD Flexi-50 50W/20W Class AB Amplifier Head can operate loaded with almost any preamp and power tubes in any combination. It's the only amplifier you need to own. Whether you strive for English overdrive, California clean, or Texas punch… $1999.00 - Buy online In stock
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 Musiciansfriend | THD Flexi 50 Rack-mounted Guitar Amp Head Red
The THD Flexi-50 Rack-mounted Guitar Amp Head is a precision hand-built 50-watt Class-AB amplifier with foot-switchable overdrive/boost, foot-switchable master volume control and the ability to use almost any preamp and power tubes in any combination, including 6L6, EL34, 6V6, 6C… $2129.00 - Buy online On order

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