Microtubes B7K V2

The Darkglass Microtubes B7K V2 bass preamp pedal features the following technical specifications:

- Input Impedance: 500kΩ
- Output Impedance: 1kΩ
- Current Consumption: ~26mA
- Voltage: 9V DC (Center Negative)
- Dimensions: Width: 94 mm / 3¾″, Length: 120 mm/ 4¾″, Height: 46 mm / 1¾″
- Weight: 320 g / 0.7 lb

Key features and controls include:
- Blend: Mixes the clean input signal with the overdriven signal
- Level: Sets the volume of the overdriven signal
- Drive: Sets the amount of saturation in the overdriven signal
- Grunt Switch: Sets the amount of low frequency content to saturate
- Attack Switch: Sets the amount of treble content to saturate
- Low, Low Mids, Hi Mids, and Treble controls with adjustable frequency bands
- Ground Lift, Direct Output, and Parallel Output options for connectivity

It is important to note that the Microtubes B7K V2 has a current draw of 26mA and should only be used with a regulated 9V DC adapter with a center-negative plug to avoid suboptimal noise performance and potential damage to the unit.