Bass Preamp with Cab Simulation
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Pre-Owned Darkglass Microtubes B7K Ultra V2
The Darkglass Microtubes B7K Ultra V2: Brutality Meets Precision Control
Bass Preamp and Overdrive Powerhouse
A perfect combination of brutality and clarity, the Microtubes B7K Ultra V2 delivers defined and powerful saturation in an intuitive format. Designed for both studio and live use, this is not just a distortion pedal. It is a complete tone shaping command center. From crisp and punchy clean preamp tones to obliterating high gain distortion, it handles everything in between with authority and control. This pre-owned unit shows light wear on the bottom of the enclosure, purely cosmetic and not affecting performance. It is fully functional and ready to step into any serious bass rig.
Four Band EQ with Selectable Mid Frequencies
The four band active equalizer provides plus or minus 12dB of boost or cut across the spectrum, giving you surgical control over your sound. Bass is centered at 100Hz while treble sits at 5kHz. The low mids and high mids each feature three selectable frequency points, allowing you to dial in exactly the right punch, growl, or cut for your mix. The Attack and Grunt toggle switches further refine how high and low frequencies interact with the saturation circuit. Whether you want tight modern aggression or thick vintage weight, this unit responds instantly to your touch.
Studio Ready Direct Output with Cab Simulation
The balanced XLR direct output with switchable cabinet simulation makes this pedal equally at home on stage or in the studio. Engage the cab sim for a polished, mix ready tone straight to a PA or interface, or bypass the digital section entirely for zero latency operation. A master volume control governs the overall level and doubles as a DI level control, while the dedicated footswitch allows independent engagement of the overdrive section for seamless transitions between clean and driven tones.
Headphone Output and Aux In for Practice
The integrated headphone output with IR cabinet simulation transforms this into a complete standalone practice solution. The 3.5mm Aux In allows you to connect a phone or laptop for backing tracks, making late night sessions easy and inspiring. The internal stereo headphone amplifier can drive a minimum load of 16 ohms, with level controlled via the master volume. Blend, Level, and Drive controls allow precise control over saturation amount and clean signal mix, ensuring your low end stays intact while adding as much grind as you dare.
Specifications
• Width 5 inches• Length 3 3/4 inches• Height 2 1/4 inches• Weight 0.95 lb• Bass plus or minus 12dB at 100Hz• Low Mids plus or minus 12dB selectable at 250Hz, 500Hz, 1kHz• High Mids plus or minus 12dB selectable at 750Hz, 1.5kHz, 3kHz• Treble plus or minus 12dB at 5kHz• Four band equalizer with six selectable mid frequencies• XLR output with switchable cab sim• Headphone output with IR cab sim• Dedicated footswitch to engage the overdrive section independently• Master volume to control overall unit level• Attack and Grunt toggle switches• Aux In jack for backing tracks• 9V DC regulated adapter required, center negative
Includes original box and manual. Power supply not included.
This bass preamp and overdrive pedal ships fully insured with signature required.

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