Krank Revolution REP 120W Tube Guitar Amp Head (Black Black Grill)

Krank Revolution REP 120W Tube Guitar Amp Head (Black Black Grill) Reviews

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Prepare yourself for the second generation of Krank's flagship Rev Series One amps, the Rev +. Now with upgraded transformers and 6550 tubes in the power section, the Rev + packs a walloping 120W of power to produce an even bigger high gain sound than the original. The "Krank" channel features a 3-band EQ, volume, two footswitchable masters, gain, presence and parametric sweep control. The "Kleen" channel features a 3-band EQ, volume and a new "boost" button to add sparkle and drive. Other new features are an active effects loop. Also included are ohm and voltage selectors, line out, manual channel switch, and metal grille in black or chrome.

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May 24, 2011 20:22:06

THD Electronics UNI112BLK UniValve 1-12 Combo, Black, 120V

THD Electronics UNI112BLK UniValve 1-12 Combo, Black, 120V Reviews

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THD Electronics UNI112BLK UniValve 1-12 Combo, Black, 120V Feature

• The THD UniValve 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 amp
• "It's one of the world's best sounding, best looking and best made amps." - Guitarist Magazine
• "Just when you think there are no new tricks in the boutique world, THD has pulled a rabbit out of a hat with this baby. With its tonal range, smart features, and superb craftmanship, the UniValve is a bang-for-buck winner." - Guitar Player Magazine
• For every 1x12 combo amp sold, THD Electronics donates to American Forests to have two trees planted. Your purchase helps the environment!
• Hand-built in Seattle, WA.

This THD amp is a 15W, 1x12 combo version of the UniValve and features the same 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 amp. Likewise, the 2 preamp tubes can be any combination of 12AX7, 12AT7, 12AU7, 12AY7 or 12AZ7. The UniValve delivers tones from smooth and clear to very aggressive overdrive. It is easily capable of driving a 4 x 12" cabinet, yet quite small and light. The 15W THD UniValve amp has a built-in Hot Plate Power Attenuator that allows for full output distortion at almost any volume. And it doesn't cost as much as you might think.What is a Class A? Class A is a term given to an amp that runs its tubes at full current all the time, unlike most tube amps that alternate between running one set of tubes and the other set, each for one half of the wave. The set not in use is turned off by a positive swing of the grid voltage. Single-ended output stages always operate in Class A. Most push-pull amplifiers operate in Class AB when overdriven, even if they are in Class A while clean. The upshot is that Class A operation has its own unique tone characteristics that set it apart from other tube amp classes. Class A amps sound great at low volumes and even better as you turn them up. Thus, with the relatively low wattage of the THD UniValve, you can turn up the amplifier to take full advantage of its stunning output distortion tone without deafening anyone.Why the self-biasing feature? The UniValve tube amp's circuitry senses the current needs of the output tube and provides the correct bias voltage to the cathode of the output tube regardless of tube type or wear. This means that, without any trip to an amp technician, you can simply replace the output tube with one that has different sound characteristics. (Of course, you can also change the preamp tubes at will for e

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Apr 22, 2011 19:23:05

THD Electronics UNI15C UniValve Cage Head, Black, 120V

THD Electronics UNI15C UniValve Cage Head, Black, 120V Reviews

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THD Electronics UNI15C UniValve Cage Head, Black, 120V Feature

• The THD UniValve 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 amp
• "It's one of the world's best sounding, best looking and best made amps." - Guitarist Magazine
• This is the standard "cage head" version, complete with a perforated steel cage to protect the tubes while providing ample ventilation.
• "Just when you think there are no new tricks in the boutique world, THD has pulled a rabbit out of a hat with this baby. With its tonal range, smart features, and superb craftmanship, the UniValve is a bang-for-buck winner." - Guitar Player Magazine
• Hand-built in Seattle, WA.

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 can be switched at will with nearly any octal-based power tube for different tones without re-biasing the amp, and the 2 preamp tubes can be switched for any combination of 12AX7, 12AT7, 12AU7, 12AY7, or 12AZ7 tubes.The UniValve is easily capable of driving a 4x12" cabinet, yet is also small and light. Its built-in Hot Plate Power Attenuator lets you experience the indescribable freedom of wailing away with full output distortion at volume levels that are quiet enough to let your neighbors sleep.There are 2 inputs-one for high gain and one for low gain. With 12AX7 preamp tubes, the low gain input gives a wide range of sounds from Nashville clean and crisp to Memphis down and dirty. With the controls pegged and a relatively high-output humbucker, the low-gain input delivers a tantalizing Texas blues overdrive. Plug into the high-gain input for a whole new world-from early British Invasion tones to modern high-gain metal attack-but with none of the mush and confusion normally associated with high-gain tones.The controls include the traditional Volume, Treble, and Bass along with an Attitude control knob that determines how the driver stage responds to signal and how it drives the power tube. There are also controls for the Hot Plate, including a hard-bypass switch. The noise reduction circuit in the Hot Plate features a light bulb fixture on the front panel that glows when you play. There is an On-Off switch for the light bulb.On the back panel the UniValve has a transformer-isolated line out with an adjustable level control and a switch to choose line-level or instrument-level signal. The speaker outs on the UniValve can drive any speaker load from 2 ohms all the way up to 16 ohms. When t

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Mar 26, 2011 02:04:05