TheMicrotubes B7K takes the powerful dynamic saturation circuit of the B3Kand adds a four-band equalizer and a balanced line driver for evengreater versatility. Designed for both studio and live use, it willtake your direct sound to a whole new level.

Controls
Level: Sets the volume of the overdriven signal.
Drive: Sets the amount of saturation in theoverdriven signal.
Blend: Mixes the clean input signal with theoverdriven signal. The clean signal remains at unity gain while thevolume of the overdriven signal is set by the Level knob, allowing forfine control of the blend ratio.
Grunt Switch: Sets the amount of low frequencycontent to saturate by selecting between three different bass boostlevels before the clipping stage.
Attack Switch: Sets the amount of treble content tosaturate: The œBoost setting emphasizes the treble content extraclarity and presence. The œFlat position leaves this registeruntouched while the œCut position will reduce the amount of highfrequencies being saturated. This addition helps to keep the trebleportion of the signal under control, specially useful when playing withnew strings and/or cabinets with tweeters. (Low: +-12dB @ 100Hz / LowMid: +-12dB @ 1kHz, Hi Mid: +-12dB @ 2.8kHz / Treble: +-12dB @ 5kHz)

• Direct Output: A balanced version of the 1/4" output,useful for running into PA's or studio mixing consoles
• WARNING: The Microtubes B7K has a current draw of30mA. Only use a regulated 9V DC adapter with a center-negative plug.Due to ecological reasons it does not accept batteries. Unregulatedpower supplies and/or higher voltages may result in suboptimal noiseperformance and even damage your unit, voiding the warranty.
• Dimensions: 12 x 10.7 cm (4.72" x 4.21")