Soundblox® Pro Bass Envelope Filter

Soundblox Pro Bass Envelope Filter

The Soundblox Pro Bass Envelope Filter is an evolution of its hugely popular predecessor, the standard Soundblox BEF. As before, there are 22 different envelope filter effects to choose from including 2 Pole and 4 Pole Low Pass variations, Single Peak, Triple Peak, Peak/Notch variations, as well as Phaser settings. Each of these settings can be further modified with a variety of control options including positive/negative filter sweeps, sweep range, attack and decay speed settings, or frequency range selection.

In this Pro version, users are able to choose from four different modulation sources including standard envelope filter sweeps, selectable LFO wave forms, a passive expression pedal and the Hot Hand motion sensing ring. An expression pedal input can be used to control filter modulation like in a standard wah pedal or a wide variety of parameters including sweep range, effect selection, LFO speed and more. As in our other Pro Series pedals, the BEF Pro features three footswitches to hold six customizable presets but also includes an option for Tap Tempo LFO on one of the footswitches.

Good god what did you guys put in that thing! The Source Audio BEF is nasty good. I've had 9 filters before this one, full size old sheet metal Qtron & Micro version, Mutron III (reissue), Moog MF-101, Bassballs nano, Dr Q nano, EBS bassIQ & my current filters, full size Bassballs & Lovetone Meatball....you win!

The BEF to me is better sounding as a stand alone envelope filter than the Meatball, big statement...but the Meatball still wins for filtering other pedals, I like how organic it is. Although the BEF & Multiwave Bass distortion are made for each other, happy customer!”

—Mike Walle

The versatility of my Source Audio Bass Envelope Filter has allowed it to take the place of several filters on my board. It has a wide array of tones that range from traditional to wild and formant-like, and they all retain a wet filter sound while avoiding volume spikes. The BEF also works fantastically with other pedals- it's an important element in creating a broad range of different synth sounds when combining it with octaver and fuzz pedals.”

—Bryan Tyler

Bass Envelope Filter Pro Interface

Roll your mouse over hot spots (+) on the panel controls and ports to learn about each one.

Soundblox Pro Bass Envelope Filter Top Panel

Selects between a range of different filter sounds.

Adjusts the direction and breadth of the filter sweep

Adjusts the center point of the filter sweep.

Adjusts the speed of the envelope filter attack and decay or selects Hot Hand axis.

Lo-retain mixing algorithm adjusts balance of wet and dry signal.

Selects between preset banks A and B.

7-Band graphic equalizer saved per preset.

Selects between envelope filter, LFO and Hot Hand modes.

Enables tap tempo for LFO mode.

Saves and recalls 6 programmable user presets.

Saves and recalls 6 programmable user presets.

Saves and recalls 6 programmable user presets.

I/O Ports

Roll your mouse over hot spots (+) on the ports to learn about each one.

Soundblox Pro Bass Envelope Filter I/O Ports

For connecting an optional Hot Hand sensor, wired or wireless.

Guitar (or other instument) input.

Control filter modulation and much more.

Allows external access to presets and paramters.

Output to amplifier or other effects.

For daisy-chaining multiple Hot Hand-enabled pedals together.

Accepts a 9V DC power supply.

Soundblox Pro Bass Envelope Filter Features & Specifications

  • 22 Filter Sounds including 2 Pole Low Pass, 4 Pole Low Pass, Single Peak, Triple Peak, Peak & Notch, and Phasers.
  • Positive and Negative filter sweep with variable range and sensitivity.
  • Wet/Dry Mix knob featuring our signature low-end preserving algorithm ‘Lo-Retain™’.
  • 4 modulation sources including envelope, LFO, expression pedal and Hot Hand.
  • Tap tempo speed control for LFO.
  • State-of-the-art DSP — Our proprietary 56-bit Digitial Signal Processor, the SA601, and crystal clear 24-bit converters.
  • 6 user presets — Easy to configure user presets in two banks selectable via 3 footswitches for quick access of your favorite sounds.
  • 7-Band Equalizer — Ultra precise 7-band equalizer for in-depth tone control saved per preset.
  • Extended Control — An expression input allows for control of a wide variety of pedal parameters. A MIDI input also allows external access to presets and parameters.
  • Motion Control — All Soundblox and Soundblox Pro pedals are ‘Hot Hand Ready®’ and can be used with any Hot Hand motion sensor to extend the capabilities of the unit.
  • Active Analog Bypass — Bypass is fully routed around the DSP and active input ensure zero signal degradation.
  • 9V DC power supply included.
  • Dimensions: 7 in./17.8 cm (length not including I/O jacks) x 6 in./15.25 cm (width) x 2 in./5 cm (height, including knobs).