Source Audio Spectrum

A Legacy of Iconic Filters, Condensed in the One Series Range

The Spectrum Intelligent Filter follows in the footsteps of classic envelope filter and auto-wah pedals, while adopting the "studio-grade" approach dear to Source Audio: an extremely precise sound engine capable of emulating vintage behaviors (attack, decay, resonance) but also exploring routing and combinations impossible with a traditional pedal. Within the One Series range, it positions itself as a toolbox dedicated to groove and sweep effects, designed to move from an immediately playable sound to a highly advanced level of customization once you dive into editing.

A Pedal for Guitarists, Bassists, and Sound Designers Seeking Movement

The Spectrum is ideal if you are looking for a lively and responsive effect: funk, disco, fusion, alternative rock, psychedelic, electro, rhythmic ambient... On bass, it excels for percussive lines and synth-bass-like leads. On guitar, it adds a vocal and organic character, perfect for energizing a riff or transforming a clean tone into an animated texture. On keyboard and machines, it becomes a true sculpting tool, with filters that follow the signal envelope or behave as more programmed modulations. Live, its presets and external control facilitate quick transitions; in the studio, the precision of the settings allows you to fit the effect exactly "in the mix."

Controls, Neuro Editing, and External Control: A True Creative Platform

On the front panel, the Spectrum remains simple and effective with an interface of 4 potentiometers and a 3-position selector, plus a bypass footswitch: perfect for dialing in a sound in seconds. But under the hood, editing via Neuro unlocks a library of filters, very detailed envelope behaviors, as well as integration of octave and distortion to create signature presets. The pedal also offers a choice of true bypass or buffer bypass (useful depending on cable length and the rest of the pedalboard), as well as operating modes oriented toward presets or "WYSIWYG" (what you see corresponds to the actual potentiometer positions). On the control side, the dedicated input accepts an expression pedal or a compatible motion sensor to control a real-time assignable parameter (filter frequency, depth, mix, etc.). Finally, the USB connection opens the door to USB-MIDI, computer editing, and firmware updates.

Sound Character

The Spectrum delivers an expressive filter, with resonance capable of ranging from a subtle "wah" accent to a very pronounced peak for talkbox-like sounds, while maintaining excellent note clarity. The envelope tracking is particularly musical: the effect opens and closes with a natural sense of control, and the dynamics remain sensitive to right-hand nuances (or keyboard playing intensity). Adding octave and drive allows you to move from a vintage grain to more massive and modern textures, ideal for lead bass lines or rhythmic parts that need to "speak." Among users spotted on stage and in rigs are notably Adam Devonshire (IDLES), Carl Broemel (My Morning Jacket), and Ejima Harushi (Polkadot Stingray), proof of its versatility in contexts ranging from indie rock to more experimental rock.

Technical specifications

Effects	Octaver / Harmony, Multi-effects, Distortion / Overdrive / Fuzz, Envelope / Auto-wah	Type	sector
Technology	Digital	Use	electric guitar
Format	Pedal	Color	Purple
EQ	Tone

Effects combinable depending on presets	envelope filter, octave, distortion	USB-MIDI	USB class compliant compatible for integration with MIDI systems via USB
Footswitch	bypass	Audio inputs	2 x 6.35mm Jack (L/R) for mono or stereo operation
Indicator	status LED	Audio outputs	2 x 6.35mm Jack (L/R)
Potentiometers	Input (Sense), Depth (Mix), Freq (Res), Speed (Vol)	Control input	3.5mm TRRS mini-jack (expression pedal, compatible sensor, assignable control)
3-position selector	Tron / Dumpling / Thrust	USB port	mini USB (editing, updates, USB-MIDI)
Advanced parameters	detailed settings for filter, envelope, octave, and distortion	Chassis	anodized aluminum
Operating modes	Preset, Control, WYSIWYG	Dimensions	114 x 70 x 51 mm
Bypass switching	true bypass or buffer bypass (selectable in hardware options)	Weight	0.28 kg