Guitar tube amps are one of the few types of technology in the world today that still utilize vacuum tube technology. This technology utilizes round, low wattage, glass tubes. The creation of the transistor changed a lot in the electronics industry.
The technological landscape of the world moved away from vacuum tube amps in general in the 1970s. However, instrument amplifier and preamp technology continued to use this style. They supply a sound quality that is hard to acquire otherwise.
The guitar amp tube is normally arranged in line via an AB push-pull connection class. This is to improve its efficiency. This type of setup will necessitate the usage of another triode or even a dual triode. These triodes are used to split the phase signal. The most often utilized guitar amplifier tubes in this technology are beam tetrode or pentode type vacuum tubes. Sometimes beam tetrode tubes are known as "kinkless tetrodes".
A few of the higher power output models will utilize parallel sets of paired output tubes in this manner. Most of the amplifying stages work via an open-loop. This excludes the driver stage due to the light negative feedback from the power transformer's secondary end.
Electric guitar tube amp has several advantages over how a solid-state amp, such as the Line 6 Flextone III Plus, operates. They are easy to fix in comparison to the solid-state amplifier due to the fact that a vacuum tube is much easier and less expensive to replace in a sound system than a transistor. The specification 'drift' for tubes is much lower than semiconductor style transistor systems as well. Tubes are better able to handle high heat and higher stereo power output, for instance.
This has lead to the continued popularity of guitar amp tubes with many home studio or garage musicians. It is a lot easier to replace the parts of such an amplifier compared the the solid state guitar amp or a modeling amp.
While a solid state circuitry and amps in general do have replaceable parts as well they usually need to be repaired by professional engineers because ample testing is required. A blown tube is easy to spot in comparison.
Electric amplifiers are used for many other types of instruments despite being known as guitar tube amps by many. The electric guitar is one of the most prolific instruments to still use them, but drummers, keyboard players, even vocalists will hook up microphones to one.
In the case of vocalists they will need to keep the microphones away from the amp to reduce noise distortion though. Some even go as far as to buy drum kits and craft them while crafting their own amplifiers from tube amp kits. Tube amp kits are quite popular in and of themselves. They allow people to tinker with creating their own modern or vintage sound systems.
One of the most popular tube amp kits on the market is the simple Marsh Amplification 5F1 Tweed Champ Kit. When these tube kits are purchased from an authentic Marsh Amplification dealer they come with everything needed to actually build this highly popular tweed era single-ended amp and the company is noted to standby their product.
The kit includes a solid narrow panel tweed cabinet made of pine, eight inch ceramic speaker, metal oxide and carbon composition resisters, TAD style filters, O.D. couple caps, etc. They also come with a complete eighteen page instruction booklet.
The reason this kit is so popular is the simplicity of the design and the lower level price range. They typically cost between four hundred and four hundred fifty dollars - still very affordable for most musicians for the cost under $500 price range.
There is more to an amp than merely selecting a few bits and pieces, then placing them together. This is a dangerous practice that involves high voltage electrical current that is powerful enough to kill the careless builder. Directions and safety guide should be followed thoroughly.
The simplest of small size guitar tube amp devices can be soldered together in a few minutes. However, more advanced versions will require intricate work with input signal, tone control, preamp stage, selectable power attenuator additions, noise canceling filters, and several other functions.
The more advanced the amplifier the greater the range of skill that will be necessary to build it. There are many classes and amplifier lessons you can take to learn advance stuffs on how they operate. An item along the lines of the Messa/Boogie vacuum tubes and bass amplifiers, for example, will prove to be far more challenging for the novice builder. It comes with fully independent 3-channel Triple Rectifier® guitar amp head, selectable Bias switch, five button footswitch, and external switching jacks - not something every beginner knows well about.
However, with greater challenge comes greater reward. The end result of creating such a modern take on vintage guitar tube amps will be superior quality guitar amplifiers that that can hold their own on any stage whether it is at a heavy metal Rock 'N' Roll concert or at a backyard barbecue party.
Return from Guitar Tube Amps to Amplifier Reviews