Welcome

Thanks for joining fedDSP.

Our mission is simple: to capture the unpredictable, non-linear magic of analog hardware and bring it into the digital domain without compromise. We don't just model circuits; we model the behavior, the quirks, and the sound that makes hardware unique.

We hope these tools inspire you to create something new.

License Key Activation

All fedDSP plug-ins require a valid license key to operate.

Purchase: After purchasing a plug-in from fedDSP.com, you will receive a license key via email. You can also find this key at any time in your Account page, by creating an account using the same email used to make your purchase.
Install: Download and install the plug-in for your operating system (macOS or Windows) from our Downloads page.
Activate:
- Open your DAW and load the plugin.
- On the first launch, you will see an activation screen.
- Copy your full key including BEGIN and END lines and paste into the activation screen. It should look like this:
```
  -----BEGIN fedDSP LICENSE-----
  (full license key)
  -----END fedDSP LICENSE-----
```
If either BEGIN or END line is missing, the license will not work.
- Click Activate.
- You're ready to make music.

If you have any problems with installation, please see our installation FAQ.

Our End User License Agreement permits you to activate your license on up to 3 separate machines.

fedDSP User Interface

All fedDSP plugins share a common set of interface controls designed to speed up your workflow.

Top Bar

The top bar of every fedDSP plugin provides access to global settings and preset management.

fedDSP logo: The fedDSP logo on the top left allows easy access to license management, as well as a direct link to this manual.
< >: preset left / right (quick navigation).
Preset Selector: Click to open full preset list. You can save, load, and organize your own user presets here. User presets are stored in the user AppData/presets location.
A/B Compare: Switch between two different states of the plugin to compare settings instantly.
Copy A > B: Copies the settings from state A to state B.
Undo / Redo: Stepped undo functionality to track back through your tweaks.
+: Access to the Advanced Panel, allowing deeper control of the plugin when you need it.
BYP: Bypass button, instant, no click.

Keyboard Shortcuts

FedDSP finally brings keyboard shortcuts to the world of audio plugins! Speed up your mixing with these standard keyboard modifiers.

(Please note that shortcuts work only when the plugin window itself is focused, so click anywhere on the plugin UI first before using the shortcut key.)

m, toggles between the MODE of the plugin (on FIERY this toggles classic and vintage, on PHATurator it toggles PHAT, PHATTER or CLEAN, etc).
a, toggles between State A and State B (A/B).
c, copies the current state into the other state instantly (fast A→B or B→A copy).
b, bypasses the plugin (same as top-bar BYP).
i, opens the Advanced Panel (same as top-bar +).
p, opens the preset list.
Shift + → or Shift + ←, change preset: right = next preset, left = previous preset.

Other UI Tips and Tricks

Reset to Default: Double-click any knob or slider to reset it to its default value.
Fine Tune: Hold Shift while dragging a knob to adjust the value in smaller increments.
Manual Entry: Right-click (or control-click) a control to type in a specific value.

KONVIKT

KONVIKT is a zero-latency, extremely CPU-light amp simulator that includes two amp heads, a dual cab section, three pedals, and three effect units.

FEATURES

KONVIKT is built around real playing and real feel. Instead of trying to replicate existing analogue circuits, we set out to find the most true-to-life response possible in a guitar plug-in, and refined the result the only way we know how: with hands and ears.

AMPS TAB

777

The 777 is the cleaner half of KONVIKT. It can stay pristine and modern, or be pushed into a mid-forward British crunch with the authentic harmonic resonance Kon uses to ground the band's more melodic, atmospheric moments. Expressive, flexible, and an excellent pedal platform, the 777 is just as useful for low-gain shaping as it is for full rhythm and lead setups that need a clearer touch.

VOL1 controls the first preamp stage, adding more front-end bite and attack saturation.
VOL2 controls the second preamp stage, in series after VOL1, adding more harmonic density and sustain.
BASS, MIDDLE, and TREBLE control the 3-band tone stack of the 777.
MASTER controls the power amp drive.
OUTPUT controls the amp output level.
PRESENCE controls the amount of post-power amp high-end boost.
DEPTH controls the amount of post-power amp low-end boost.
POWER toggles the amp bypass state. When the LED is on, the amp is active.

7170

The 7170 is the aggressive heart of the suite, delivering the high-gain saturation and barrel-chested low end that has become a staple of the Malevolence sound. The dual-gain structure is designed to keep complex, technical riffs audible under heavy saturation, allowing you to blend raw aggression with the specific bloom and low-end movement Kon demands from a touring head.

GAIN controls the main preamp gain and drives the majority of the 7170 saturation.
BLOOM controls a specific saturation stage designed to emphasise the bloom and low-end movement of the sound.
BASS, MIDDLE, and TREBLE control the 3-band tone stack of the 7170.
MASTER controls the power amp drive.
OUTPUT controls the amp output level.
PRESENCE controls the amount of post-power amp high-end boost.
DEPTH controls the amount of post-power amp low-end boost.
POWER toggles the amp bypass state. When the LED is on, the amp is active.
AMP ICON at the bottom right switches between 777 and 7170.

Advanced Panel

ADVANCED (+) PANEL shows or hides the advanced amp controls.
ADVANCED HPF toggles a high-pass filter before the amp. It is active by default, which is how the amp is intended to work. Turning it off lets more low end hit the preamp, increasing saturation.
ADVANCED TIGHT changes the low-mid response before the amp. On 777, it cuts some low mids to create more space. On 7170, it changes the preamp distortion character for a tighter, lower-gain, clearer response.
ADVANCED BRIGHT changes the high-end voicing before the amp. On 777, it adds a brighter top-end lift. On 7170, it adds an extra saturation stage before the preamp for a more aggressive sound.
ADVANCED SAG changes the feel and response of the amp for a softer, more power-amp-like push.
ADVANCED 6L6/EL84 switches between two power amp flavours: 6L6 for a tighter modern sound with more headroom, or EL84 for more midrange emphasis and a more saturated response.
ADVANCED SAFE toggles a transparent zero-latency limiter that prevents the full plug-in output from exceeding -0.003 dB.

PEDALS TAB

KAMI

KAMI is a streamlined compressor designed to manage dynamics before they hit the saturation stages.

COMP controls the amount of compression applied to the incoming signal. It includes a soft auto-gain behaviour so you can compare settings without large volume jumps.
LEVEL controls the pedal output level.
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

RAIJU

RAIJU is an overdrive pedal designed to tighten the low end before the 7170, or to push the 777 into a more aggressive voice.

DIST controls the amount of saturation applied to the incoming signal.
TONE controls an advanced tilt EQ, darker anticlockwise and brighter clockwise.
BARK controls an aggressive mid-range boost to add more attack and bite.
LEVEL controls the pedal output level.
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

SHI

SHI is a frequency-focused saturation pedal that lets you target a specific frequency range and saturate only that area before blending it back into the chain.

DRIVE controls the amount of saturation applied to the selected frequency range.
FREQUENCY selects the frequency range being targeted by the saturation stage.
LEVEL controls the balance between the dry signal and the saturated signal.
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

CABS TAB

The dual cab section lets you load two cabs at the same time. Each cab has its own controls.

CAB SELECTOR chooses the cab for that slot.
VOL controls the output level of the cab.
DELAY is a time-alignment control in milliseconds.
ON/OFF toggles the cab on or off.
PH flips polarity.
XY BLEND blends the two cabs together while keeping levels matched.
RANDO randomises both selected cabs.
ROOM controls the send to the room-style reverb.
8 BAND GRAPHIC EQ boosts or cuts each band by up to +/-12 dB. The bands are 60 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, and 8 kHz.
HPF controls the high-pass filter cutoff frequency.
LPF controls the low-pass filter cutoff frequency.
UNMUD controls a dynamic EQ that helps reduce low-frequency build-up, especially during palm-muted high-gain playing.

RACK/SFX TAB

TIME

TIME is an analogue-style delay/echo with dedicated vibrato and chorus modulation.

TIME controls delay time in milliseconds when SYNC is off, or rhythmic subdivisions when SYNC is on.
FEEDBACK controls the amount of delay repetition. The range runs from 1% (one repeat) to 150%, where values above 100% self-oscillate.
VIBRATO/CHORUS chooses the type of modulation applied to the repeats.
DEPTH controls the amount of modulation applied to the repeats.
M/S sets the delay mode: M for mono and S for stereo. In mono-to-mono, the delay is locked to M.
MIX controls the wet/dry balance.
LEVEL controls the output level of the rack unit.
POWER toggles bypass. When the LED is on, the unit is active.

FLOOD

FLOOD is a hall-style shimmer reverb built for cinematic scale and atmosphere.

PREDLY controls how long the signal waits before the reverb starts.
DECAY controls the length of the main hall reverb.
SHIMMER controls the balance between the hall reverb and the shimmer layer.
HPF controls the high-pass filter applied to the wet reverb signal after the reverb stage and before MIX.
LPF controls the low-pass filter applied to the wet reverb signal after the reverb stage and before MIX.
MIX controls the wet/dry balance.
POWER toggles bypass. When the LED is on, the unit is active.

CIRCLE

CIRCLE is a flexible modern chorus that adds spatial width and movement.

RATE controls chorus speed in Hz.
DEPTH controls the intensity and thickening of the chorus effect.
MIX controls the wet/dry balance.
PRE/POST changes the position of CIRCLE in the chain. PRE places it before TIME and FLOOD; POST places it last.
POWER toggles bypass. When the LED is on, the unit is active.

GLOBAL SETTINGS

INPUT controls the level fed into the plug-in.
GATE controls the gate threshold. Attack and release are pre-set for transparency, so this is a single-knob gate.
OUTPUT controls the final output level leaving the plug-in.
TUNER shows or hides the tuner.
M/DM/S selects the operating mode. Mono-to-mono and mono-to-stereo are locked to M. Stereo-to-stereo lets you switch between DM (dual mono) and S (stereo).
ICONS indicate state by colour: white means active, dark grey means bypassed, and the selected icon appears white with a dot above it. Single-click an active icon to select it, and double-click it to bypass it.

TUNER

440 Hz sets the tuner reference frequency. Default is 440 Hz, with a range from 390 Hz to 470 Hz.
TUNER switches between relaxed mode (default, tuner text appears black) and fast mode (tuner text appears blue).
MUTE mutes the plug-in output while tuning.

fedZEP

fedZEP is a zero-latency, extremely CPU-light amp simulator that includes two amp heads, a dual cab section, three pedals, and three effect units.

FEATURES

fedZEP is built around real playing and real feel. Instead of trying to replicate existing analog circuits, we set out to find the most true-to-life response possible in a guitar plug-in, and refined the result the only way we know how: with hands and ears.

AMPS TAB

CLEAN takes tone sculpting to a new level, from sparkly cleans to edge-of-breakup tones.

CRUNCH explores distortion from crunchy, chunky rhythm sounds to huge walls of rock guitar tone.

VOL1 controls the first gain stage of the preamp, with more front-end bite and attack saturation.
VOL2 controls the second gain stage, in series after VOL1, adding more harmonic density and sustain.
BASS, MIDDLE and TREBLE control the 3-band tone stack of the selected amp.
MASTER controls the power amp drive.
OUTPUT controls the amp output level.
PRESENCE controls the amount of post-power amp high-end boost.
DEPTH controls the amount of post-power amp low-end boost.
POWER toggles the amp bypass state. When the LED is on, the amp is active.
AMP ICON at the bottom right switches between CLEAN and CRUNCH.

Advanced Panel

ADVANCED (+) PANEL shows or hides the advanced amp controls.
ADVANCED HPF toggles a high-pass filter before the amp. It is active by default, which is how the amp is intended to work. Turning it off lets more low end hit the preamp, increasing saturation.
ADVANCED TIGHT toggles a low-mid cut before the amp. It is off by default. Turning it on gives a leaner character.
ADVANCED BRIGHT toggles a high-end boost before the amp. It is off by default. Turning it on gives a brighter, more percussive attack.
ADVANCED SAG changes the feel and response of the amp for a softer, more power-amp-like push.
ADVANCED EL84/6973 switches between two power amp flavours: EL84 for a slightly more modern British-style sound, and 6973 for thicker mids with a heavier vintage character.
ADVANCED SAFE toggles a transparent zero-latency limiter that prevents the full plug-in output from exceeding -0.003 dB.

PEDALS TAB

SNAPPER

SNAPPER is a compressor pedal designed to help you get more sustain and attack out of your signal.

SQUASH controls the amount of compression applied to the incoming signal. It includes a soft auto-gain behavior so you can compare settings without large volume jumps.
SNAP controls the attack and release behavior. Clockwise is slower; anticlockwise is faster.
LEVEL controls the pedal output level.
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

ELEGANTE

ELEGANTE is an overdrive pedal designed to push the front end harder and add bite.

DIST controls the amount of saturation applied to the incoming signal.
TONE controls an advanced tilt EQ, darker anticlockwise and brighter clockwise.
BARK controls a very aggressive mid-range boost.
LEVEL controls the pedal output level.
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

MORSO

Inspired by classic guitar pedals from the 70s and 80s, MORSO delivers thick, unruly distortion in two distinct flavours, with a switch between vintage fullness and a more aggressive top end.

DIST controls the amount of saturation applied to the incoming signal.
LEVEL controls the pedal output level.
MODE switches between MORSO (top position, thicker character) and MORSONE (bottom position, more aggressive tone).
BYPASS toggles the pedal bypass state. When the LED is on, the pedal is active.

CABS TAB

The dual cab section lets you load two cabs at the same time. Each cab has its own controls.

CAB SELECTOR chooses the cab for that slot.
VOL controls the output level of the cab.
DELAY is a time-alignment control in milliseconds.
ON/OFF toggles the cab on or off.
PH flips polarity.
XY BLEND blends the two cabs together while keeping levels matched.
RANDO randomises both selected cabs.
ROOM controls the send to the room-style reverb.
8 BAND GRAPHIC EQ boosts or cuts each band by up to +/-12 dB. The bands are 60 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, and 8 kHz.
HPF controls the high-pass filter cutoff frequency.
LPF controls the low-pass filter cutoff frequency.
UNMUD controls a dynamic EQ that helps reduce low-frequency build-up, especially during palm-muted high-gain playing.

RACK/SFX TAB

ECO

ECO draws from classic 70s tape echoes, where repeats carry tone, movement, and a little unpredictability.

TIME controls delay time in milliseconds when SYNC is off, or rhythmic subdivisions when SYNC is on.
FEEDBACK controls the amount of delay repetition. The range runs from 1% (one repeat) to 150%, where values above 100% self-oscillate.
VIBRATO/CHORUS chooses the type of modulation applied to the repeats.
DEPTH controls the amount of modulation applied to the repeats.
M/S sets the delay mode: M for mono and S for stereo. In mono-to-mono, the delay is locked to M.
MIX controls the wet/dry balance.
LEVEL controls the output level of the rack unit.
POWER toggles bypass. When the LED is on, the unit is active.

WHOLE LOTTA VERB

WHOLE LOTTA VERB sits between a classic plate and a hall reverb, combining two stages to create a distinctive sense of space and sustain.

PREDLY controls how long the signal waits before the reverb starts.
DECAY controls the length of the first reverb stage.
TAIL controls the dry/wet level of the second reverb stage, added in series after the first.
HPF controls the high-pass filter applied to the wet reverb signal after the reverb stage and before MIX.
LPF controls the low-pass filter applied to the wet reverb signal after the reverb stage and before MIX.
MIX controls the wet/dry balance.
POWER toggles bypass. When the LED is on, the unit is active.

DOUBLE DENIM

DOUBLE DENIM is a chorus that adds width, motion, and vintage character without blurring the performance.

RATE controls chorus speed in Hz.
DEPTH controls the intensity and thickness of the chorus effect.
MIX controls the wet/dry balance.
PRE/POST changes the position of DOUBLE DENIM in the chain. PRE places it before ECO and WHOLE LOTTA VERB; POST places it last.
POWER toggles bypass. When the LED is on, the unit is active.

GLOBAL SETTINGS

INPUT controls the level fed into the plug-in.
GATE controls the gate threshold. Attack and release are pre-set for transparency, so this is a single-knob gate.
OUTPUT controls the final output level leaving the plug-in.
TUNER shows or hides the tuner.
M/DM/S selects the operating mode. Mono-to-mono and mono-to-stereo are locked to M. Stereo-to-stereo lets you switch between DM (dual mono) and S (stereo).
ICONS indicate state by colour: white means active, dark grey means bypassed, and the selected icon appears white with a dot above it. Single-click an active icon to select it, and double-click it to bypass it.

TUNER

440 Hz sets the tuner reference frequency. Default is 440 Hz, with a range from 390 Hz to 470 Hz.
TUNER switches between relaxed mode (default, tuner text appears black) and fast mode (tuner text appears blue).
MUTE mutes the plug-in output while tuning.

PHATurator

PHATurator is a multi-stage saturation and tonal-shaping plugin designed to add weight, presence and musical character while staying light on CPU.

Multiple analogue-inspired stages (TUBE, TAPE, FET, PUNCH, PHAT, WARMTH) allow you to blend to taste, from subtle warmth to absolute madness.

MAIN INTERFACE

Multiple analogue-inspired stages (TUBE, TAPE, FET, PUNCH, PHAT, WARMTH) you can blend to taste, from subtle warmth to absolute madness.

FET, detector-driven FET dynamics (76 style feel) for punch and control.
TUBE, classic tube saturation to make everything fuller.
TAPE, great for vintage glue, tasty saturation and width.
PUNCH, fast and punchy large format British console saturation: tight low end, snappy transient and an assertive upper mid band.
PHAT, fuller low-mid punch and pleasing compression-like behaviour. This is a very loudness-friendly kind of saturation.
WARMTH, thick, transformer rich 70s British class A preamp vibe: bigger lows, creamy low mids and a sweet forward presence.
MIX (global), lets you do in-plugin parallel processing.
HPF, Butterworth HPF when in clean mode, PHAT and PHATTER add resonance to it. This HPF is pre-saturation, so it helps to shape the saturation character.
LPF, Butterworth LPF pre-saturation, so it helps to shape the saturation character.
DEPTH, subtle or not-so-subtle low end enlarger. It’s a combination of EQ and very kind saturation that enlarges (or thins out) the low end. Very powerful.
TONE, when CLARITY is ON this is a carefully fine tuned high shelf to brighten up any source without harshness, when CLARITY is OFF this becomes a tilt EQ to make the source brighter or darker.

ADVANCED PANEL

MODE, toggles three behaviours: CLEAN it does what it says on the can, PHAT subtle transformer like saturation + small resonance on the HPF frequency and PHATTER dual transformer saturation + accentuated resonance on the HPF frequency.
LIMITER MODE (OFF / SAFE / AGGRO), is a lightweight but mega powerful post-output limiter to avoid final clipping (-0.003 dB final clip). Use SAFE for transparent control, AGGRO for fast peak control.
CLARITY/TILT, changes the TONE character: when in CLARITY mode the TONE is more shelf-y, when it’s in TILT mode the tone behaves more like a fine tuned tilt, that helps make the source brighter or darker.
AUTO GAIN, RMS based auto trim that keeps perceived loudness steady after heavy processing, making A/B comparisons fast and reliable.
MIX (global), lets you do parallel processing in-plugin.
OUTPUT HPF/LPF (global), is a second set placed on the output of the plugin, right before the limiter in the wet path.

ELEGANTE

ELEGANTE is a zero-latency, CPU-light saturation and utility plugin that can be used for mixing, tracking and creative duties.

Loosely inspired by the classic TS-style overdrive, this plugin is built around an original circuit that captures the legendary mid warmth and amp-pushing feel. From there, it goes further with expanded controls for deeper tone shaping, flexible EQ, pre and post filtering, polarity flip, and precise high pass and low pass filters. The result is a guitar overdrive with true TS soul that also shines as a creative mixing tool for tracking and sound design. Classic character with modern versatility.

MAIN INTERFACE

DIST controls the amount of saturation injected in the signal.
TONE controls a clever tilt/LPF with variable Q to shape the EQ of the source before saturation.
LEVEL boosts or reduces the volume post saturation stage.
BARK adds some "bark-y" mid range, to make every source feel more in your face.
INPUT controls the signal coming into the effect and OUTPUT controls the signal coming out of the effect.
POWER TOGGLE toggles the effect on and off.

ADVANCED PANEL

MONO / DUAL MONO / STEREO changes behaviour based on the track format. Mono instance: the MONO button is shown but it's disabled, because there is no option available. Stereo instance (2 channels), you may select between: DUAL MONO, where left and right channels are processed independently - or STEREO, where both channels are linked and the limiter will apply the same gain reduction, helping keep the stereo image stable.
LIMITER MODE (OFF / SAFE / AGGRO) is a post-clamp lightweight but mega powerful post-output limiter to avoid final clipping (-0.003 dB final clip). Use SAFE for transparent control, AGGRO for fast peak control.
PH toggles the polarity. The button shows "PH 0" for normal polarity or "PH 180" for reverse polarity (180°).
FILTERS toggles the position of HPF and LPF in the signal chain. The button shows "FILTERS: PRE" to indicate that the HPF andLPF are processed before the pedal, or "FILTERS: POST" to indicate that the HPF and LPF are processed after the pedal.
MIX controls the mix between the dry signal and the processed signal.
TIME OFFSET applies a micro-delay (0 to 6ms) to the processed sound. This allows you to time-align the wet and dry paths, ensuring optimal phase coherency when blending them together with the MIX control.
HPF adjusts the cutoff frequency of the HPF. The range is 20Hz to 2,000Hz.
LPF adjusts the cutoff frequency of the LPF. The range is 2,000Hz to 20,000Hz.

MORSO

MORSO is a zero-latency, extremely CPU-light vintage distortion and tonal shaping plugin for mixing, tracking, and creative duties.

It features parallel mix control, pre/post HPF and LPF routing, limiter, polarity flip, and sample delay.

Inspired by classic guitar pedals from the 70s and 80s, MORSO offers two modes:

MORSO: thicker, unruly distortion.
MORSONE: bitey and pushy alternative.

It also includes expanded controls for deeper tone shaping: flexible EQ, pre/post filtering, polarity flip, and precise HPF/LPF controls. The result is a distortion plugin that also shines as a creative mixing tool for tracking and sound design.

MAIN INTERFACE

DIST controls the amount of saturation injected in the signal.
LEVEL boosts or reduces volume after the distortion stage.
SWITCH selects one of two modes: MORSO (thicker 70s/80s-inspired character) or MORSONE (more bite and aggression).
INPUT controls the signal entering the effect.
OUTPUT controls the signal leaving the effect.
POWER TOGGLE enables or bypasses the effect.

ADVANCED PANEL

MONO / DUAL MONO / STEREO adapts to track format. Mono shows MONO disabled. Stereo allows DUAL MONO (independent L/R) or STEREO (linked channels with shared limiter gain reduction).
LIMITER MODE (OFF / SAFE / AGGRO) is a lightweight post-output limiter to avoid final clipping (-0.003 dB final clip). Use SAFE for transparent control and AGGRO for faster peak control.
PH toggles polarity. The button shows PH 0 (normal) or PH 180 (inverted).
FILTERS toggles HPF/LPF position in the chain: FILTERS: PRE (before pedal) or FILTERS: POST (after pedal).
MIX blends dry and processed signal.
TIME OFFSET applies a micro-delay (0 to 6ms) to the processed sound. This allows you to time-align the wet and dry paths, ensuring optimal phase coherency when blending them together with the MIX control.
HPF cutoff range: 20 Hz to 2,000 Hz.
LPF cutoff range: 2,000 Hz to 20,000 Hz.

SNAPPER

SNAPPER is a zero-latency, extremely CPU-light compression and utility plug-in for mixing, tracking, and creative duties.

It features a parallel mix knob, pre or post HPF/LPF routing, limiter modes, polarity flip, and sample delay for phase experimentation.

Inspired by classic compressor guitar pedals, SNAPPER is built around an original circuit that captures the snap and punch of OTA compression with variable linked attack/release and soft analog-style saturation. It then extends this workflow with deeper tone-shaping tools, flexible filtering, and advanced routing so it works as both a pedal-style processor and a modern mixing utility.

MAIN INTERFACE

SQUASH controls the amount of compression injected into the signal and includes soft auto-gain behavior.
SNAP controls linked attack/release. Turning clockwise gives slower, smoother movement; turning anti-clockwise gives very fast, snappy response.
LEVEL boosts or reduces volume after the saturation stage.
INPUT controls the signal entering the effect, and OUTPUT controls the signal leaving the effect.
POWER TOGGLE enables or bypasses the effect.

ADVANCED PANEL

MONO / DUAL MONO / STEREO adapts to track format. Mono instances show MONO disabled. Stereo instances can run DUAL MONO (independent L/R) or STEREO (linked channels with shared limiter gain reduction).
LIMITER MODE (OFF / SAFE / AGGRO) is a lightweight post-output limiter to avoid final clipping (-0.003 dB final clip). Use SAFE for transparent control and AGGRO for faster peak control.
PH toggles polarity. The button shows PH 0 (normal) or PH 180 (inverted).
FILTERS toggles HPF/LPF position in the chain: FILTERS: PRE (before compression) or FILTERS: POST (after compression).
MIX blends dry and processed signal.
SAMPLE DELAY offsets one side for phase and width experimentation.
HPF cutoff range: 20 Hz to 2,000 Hz.
LPF cutoff range: 2,000 Hz to 20,000 Hz.

SHI

SHI is a saturation and tone-focusing plug-in that features targeted harmonic enhancement across a selected frequency range.

Inspired by the immediacy of small-format hardware, this plug-in is built to bring sounds into focus by adding harmonic energy exactly where it matters. It features zero latency, minimal CPU load, and a simple three-knob layout. Controlled with AMOUNT, DRIVE, and FREQUENCY, SHI can move from subtle bloom and lift to bold weight, midrange punch, or top-end urgency. It goes further as a creative mixing tool for guitars, drums, bass, loops, and sound design, adding size and character without getting in the way of the mix.

MAIN INTERFACE

DRIVE controls the amount of saturation applied to the selected frequency range.
FREQUENCY selects the frequency range being targeted by the saturation stage.
AMOUNT controls the blend between the dry and processed signal.
INPUT controls the signal coming into the effect.
OUTPUT controls the signal coming out of the effect.
POWER TOGGLE toggles the effect on and off.

ADVANCED PANEL

MONO / DUAL MONO / STEREO behaves based on the track format. Mono instances show MONO disabled. Stereo instances can run DUAL MONO, where left and right channels are processed independently, or STEREO, where both channels are linked and the limiter will apply the same gain reduction to help keep the stereo image stable.
LIMITER MODE (OFF / SAFE / AGGRO) is a post-clamp lightweight but powerful post-output limiter to avoid final clipping (-0.003 dB final clip). Use SAFE for transparent control and AGGRO for fast peak control.
PH toggles the polarity. The button shows PH 0 for normal polarity or PH 180 for reverse polarity (180°).
FILTERS toggles the position of HPF and LPF in the signal chain. The button shows FILTERS: PRE to indicate that HPF and LPF are processed before the pedal, or FILTERS: POST to indicate that HPF and LPF are processed after the pedal.
MIX controls the mix between the dry signal and the processed signal.
HPF adjusts the cutoff frequency of the HPF. The range is 20Hz to 2,000Hz.
LPF adjusts the cutoff frequency of the LPF. The range is 2,000Hz to 20,000Hz.

Support & Bug Reporting

If you encounter any issues while using our plugins, we are here to help.

Do take a look at our support page for common problems and solutions.

Our Discord channel is another excellent resource to get real time help from fedDSP staff and the wider community.

How to Report a Bug

Alternatively, if you have a bug, please send an email to support@feddsp.com, or report it in our Discord bugs page. Please make sure that you include the name of the plugin, your OS, DAW version, and steps to reproduce the bug. We appreciate you taking the time to let us know about any bugs that you find.