Darkglass Electronics Microtubes B7K Ultra

The Darkglass Electronics Microtubes B7K Ultra, introduced in 2016, is an advanced bass preamp and overdrive pedal designed as an upgrade to the original B7K. Created by the Finnish company Darkglass Electronics, the B7K Ultra builds on its predecessor's reputation for delivering pristine clean tones, aggressive overdrive, and unparalleled tonal flexibility. The Ultra model adds several new features, including a master volume control, a separate footswitch for engaging distortion, and expanded EQ options, making it a favorite among professional bassists across genres.

Historical Development

Origins: The B7K Ultra was developed in response to user feedback on the original B7K. It retained the core Darkglass overdrive circuitry while introducing enhanced tone-shaping capabilities.
Features: Key additions include a 4-band EQ with sweepable midrange frequencies, "Attack" and "Grunt" switches for treble and bass saturation control, and a balanced XLR output with optional cabinet simulation. Later iterations added features like USB connectivity for impulse response (IR) loading and headphone/auxiliary inputs for practice use.
Impact: The B7K Ultra became a flagship product for Darkglass Electronics, solidifying its status as a leader in modern bass gear.

Notable Players

John Stockman (Karnivool): Known for using the B7K Ultra to craft his powerful and articulate bass tones.
Nolly Getgood (Periphery): A prominent advocate of Darkglass products, he uses the pedal for its clarity and versatility in progressive metal.
Liam Wilson (The Dillinger Escape Plan): Utilized the B7K Ultra for its ability to cut through dense mixes with precision.

Popular Settings

The B7K Ultra offers immense tonal flexibility, with popular settings including:

Modern Metal Tone: Drive at 2:00, Blend at 50%, Bass at 1:00, Low Mids at 500Hz boosted slightly, Treble at 2:00, Attack switch on "Boost," Grunt switch on "Fat."
Clean Preamp: Drive off, Blend fully clean, Bass and Treble flat, Low Mids at 1kHz slightly boosted for clarity.
Aggressive Overdrive: Drive at 3:00, Blend at 70%, Bass boosted slightly, High Mids at 1.5kHz boosted heavily for cutting presence.

Legacy

The Microtubes B7K Ultra has become a benchmark in bass tone shaping. Its ability to function as a standalone preamp or integrate seamlessly into larger rigs has made it indispensable for touring musicians and studio professionals alike. With its combination of analog warmth and modern versatility, the B7K Ultra continues to define the sound of contemporary bass music.