The Super Tube offers switchable 9- or 18-volt operation. In Classic 9-volt, the ST-9 runs at the incoming supply voltage, greatly extending battery life. When switched to Stabilized 18-volt setting, Maxon’s proprietary DC-DC voltage doubler circuit increases the headroom, frequency range, and dynamic response of the ST-9. Stabilized operation is recommended for musicians who use external DC power supplies.
The ST-9 Pro+ also features a new Classic/Low-Boost Mode switch. This switch selects between two different sets of clipping diodes for more tube-like distortion characteristics. In addition, the “Low Boost” setting also boosts Low (+12dB at 100Hz) and Mid (+4dB at 500Hz) frequency ranges, making it ideal to “thicken up” the sound of single coil pickups or generally beef up your lows for a fatter sound.
With the ST-9’s controls and voltage options an almost unlimited variety of overdriven tones can be dialed in. Whether you play Blues, Rock or Metal, the ST-9 Pro+ Super Tube offers a plethora of tube-like tones in a flexible, compact package.
Features:
Level – Determines overall output level of pedal
Drive – Controls amount of distortion
Tone – A Hi-cut/Hi-boost tone circuit that controls hi-frequency range of signal.
Mid Enhance – Controls midrange boost frequency
New Classic/Low-Boost Mode switch
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