Enhance the tone and versatility of your bass guitar with the Tone Capsule Onboard Bass Preamp from Darkglass Electronics, active electronics that can be installed in your bass for enhanced control. The Tone Capsule preserves your instrument's natural character while providing improved control over bass, high-mid, and low-mid frequencies.

Each of the three aforementioned frequency bands can be adjusted by ±12 dB on the included potentiometers. The pots can be wired in different configurations to accommodate instruments with a range of setups, including those with two volume controls, blend and volume control, and/or bypass switches. Finally, the Tone Capsule supports use with either one or two 9V batteries in series, allowing for 9 or 18V operation respectively (batteries and clips not included).