Guyatone Ultron Auto Wah

248 Rock Hill Drive, P.O. Box 760
Rock Hill, NY 12775
Phone/Fax 845-796-3616

Guyatone Ultron Auto Wah
Guyatone Optical Series Model GST-U05

With optical circuitry based upon the vintage Mutron III envelope filter, the Ultron Auto Wah takes the soul of that classic effect and adds a variety of new and useful control features that set it apart from any other unit on the market. With the Ultron three types of classic wah filter effects are available – Envelope Filter (filter effect controlled by pick attack), Auto Wah (filter effect controlled by internal oscillator), or Manual Wah (filter effect controlled via external expression pedal). For all three effect types the frequency range, direction and intensity of the filter effect are completely adjustable via the Threshold, Frequency, Drive and Peak controls on the unit’s front panel. At the heart of the Ultron is Guyatone’s proprietary CPU controller which allows for quick selection of the Ultron’s primary effect function. Six Effect Modes are easily accessible from the unit’s front panel, and each Effect Mode features a Sub-Mode that can be accessed with a quick press of the Control Footswitch. If that wasn’t enough, the last two Modes also feature Bonus Modes that allow for manual selection of the oscillator Waveform via an external expression pedal. The Six Effect Modes are as follows: MOMENTARY WAVE – Functions as an Envelope Filter or, when Control Footswitch is pressed and held, an oscillator-controlled Auto Wah. WAVE TAP –Functions as an oscillator-controlled Auto Wah with rate determined by tap tempo function of Control Footswitch. PEDAL WAH/TOUCH – Functions as a Manual Wah with filter position controlled by the optional external expression pedal in Main Mode. Three selectable tapers (Linear/Audio/Reverse Audio) are available for the treadle. In Sub-Mode unit functions as an Envelope Filter. PEDAL DEPTH/TOUCH - Main Mode varies Frequency Depth using the optional Expression pedal or functions as Envelope Filter in Sub-Mode PEDAL SPEED1/TOUCH – Main Mode varies the speed of the Wave Form oscillation with the optional Expression Pedal over a range of 70-1000 mS. In Sub Mode the unit functions as an Envelope Filter. PEDAL SPEED 2/TOUCH – Main Mode varies the speed of the Wave Form oscillation with the optional Expression Pedal over a range of 70-4000 mS. In Sub Mode the unit functions as an Envelope Filter. Via these multiple Effect Modes, the user can achieve a limitless variety of filtering effects that can all be toggled through and tweaked in real time. The Ultron’s CPU also offers six selectable waveforms when the unit is used in the oscillator-controlled Effect Modes - a variety of Triangle, Sawtooth, and Square Waves are available for quick selection via the unit’s front panel. In addition, the oscillator’s rate can be displayed in BPM or Milliseconds allowing for precise syncing to song tempo or external devices. Like the Mutron III, the Ultron features selectable High Pass, Band Pass and Low Pass filters, allowing for use with a wide variety of instruments and input signals. Additionally, the Ultron features a Notch Filter setting which creates a “mid-scoop” effect particularly useful for Funk and Slap Bass. The Ultron’s Range control offers similar improvements over the original Mutron, featuring the standard Hi and Lo ranges as well as the new Mid frequency range, which allows for much more precise positioning of the filter effect. The Ultron’s operation ranges can be further tweaked for use with specific instruments via an array of internal DIP switches.

$446.25
Includes UPS Ground Shipping
in Continental U.S.
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Combining the functionality of digital control with the unsurpassed warmth of analog audio, the Guyatone Optical Series models are designed to meet the needs of the professional musician in a real world performance environment. No longer is it necessary to bring a suitcase full of pedals to a session or to search through menu screens during a gig to achieve the sounds you are after. Practical, versatile, portable and intuitive, the Guyatone Optical Series offer a plethora of essential analog tones in a compact, easy-to-use package.

The Guyatone Optical models feature 100% analog audio paths based around custom-made photocouplers that are hand-selected at exacting tolerance ranges. All audio control parameters are easily accessible and adjustable from the units’ front panels, making menu scrolling a thing of the past. Based upon some of the most desirable vintage circuits, the Guyatone Optical effects take these classic sounds of the past and launch them into the future by offering improved performance and additional features.

At the heart of each Optical model is a proprietary CPU controller that was custom-designed by Guyatone. This CPU features a digital oscillator with 6 selectable waveform patterns whose rate is controllable via tap tempo or the manual Speed control. Rate can be displayed in BPM or Milliseconds, allowing the Guyatone Opticals to be easily synced to song tempos, external digital signal processors and generators, or each other. In addition, several different effect parameters may be assigned to the optional CV controller pedal for real-time manual adjustment.

By combining classic and cutting-edge technologies Guyatone has developed a series of effects that are a true wonder of the audio processing world. The Guyatone Optical Series - truly in a class by themselves.