New Electronic Audio Experiments Longsword V4.6 Overdrive Guitar Effects Pedal

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From Electronic Audio Experiments:

The Electronic Audio Experiments Longsword is yet another contender in the endless void of op-amp based drive pedals—familiar but with some novel twists. Cascaded gain stages allow for the full range from clean boost to massive distortion, all without sacrificing tonal flexibility. The equalizer combines bass and treble shelving filters with an active, frequency-selectable midrange boost/cut control. This lets the user sculpt a diverse array of tones and carve out a niche in even the most dense of mixes. The Longsword has a broad frequency response which makes it work equally well with guitar, baritone, and bass.

Controls
Level: output volume
Drive: go from light grit to heavy overdrive
Low/High: James/Baxandall tone stack (shelving filters)
Mid: active midrange boost/cut
Shift: selects frequency controlled by Mid pot
Diode: selects between clipping diodes, to alter dynamics and headroom
-Up: MOSFET clipping, medium compression
-Center: no diodes, minimal compression
-Down: Silicon diode clipping, maximum compression
Boost (Footswitch): engages a front end mid boost
Boost (Knob): adds up to 20dB of gain when the Boost is engaged

Changelog
V4.6 (updated June 2026, serial #3253)
Added intelligent momentary/latching behavior to footswitches
Reduced switch pop when engaging Boost circuit

V4.5 (January 2021, serials #362-3252)
- New mechanical format (changed enclosure shape, knob spacing, jacks, etc)
- Added power supply over-voltage shutdown circuit and ESD protection
- Increased Low/High control crossover frequency by approximately 500Hz to reduce interactivity of High and Mid controls

V4
- New 6-knob layout
- Surface mount PCB
- Boost knob moved to exterior
- Soft-touch relay bypass switching

V3
- Added 9V to 18V (+/-9V bipolar) power supply for increased headroom
- Gain 1/2 setting replaced with Boost mode

V2.1
- Eliminated Range toggle, fixed at optimal intermediate setting

V2
- Added diode clipping switch
- Added “Gain 1/2” switch to access 2nd preset, accessible via internal trimpot

V1
- Initial release

Electrical Specifications
Bypass: Relay switching with true bypass
Input impedance @ 1 Khz: 500kΩ
Output impedance @ 1 Khz: 1kΩ
Power: 9V DC, 2.1 mm center negative barrel. The current draw is 75 mA.
We recommend a regulated, isolated power supply (not included) rated for 100 mA minimum. The PSU input is protected against reverse polarity and over-voltage up to 24V. Our pedals do not accept batteries.