fedDSP has released fedZEP, a new guitar amp plugin built around two original amp designs, three preamp pedals, a dual-cab section, and a full FX rack.

fedDSP is a small team from Sheffield, UK, led by producer and engineer Federico Telesca. Over the past few weeks, we’ve covered their first three plugin releases: the MORSO vintage distortion, the SNAPPER OTA-style compressor, and the ELEGANTE Tube Screamer-style overdrive.

fedZEP brings all three pedals together inside a single amp plugin, alongside two new amp models and a collection of original effects, cabs, and utilities.

Rather than modeling a specific vintage amp, the fedDSP team set out to design two new amps shaped by their own playing and ear, tuned over twenty years of working with tube gear. The result is a pair of amps called CLEAN and CRUNCH.

CLEAN is built around two volume stages. VOL1 handles front-end bite and attack saturation, while VOL2 adds harmonic density and sustain, taking the amp from pristine cleans into touch-sensitive breakup. A full Bass/Mid/Treble stack joins Master, Presence, and Depth controls, with advanced settings for finer tone shaping.

CRUNCH handles the distorted side, with GAIN1 driving front-end grind and GAIN2 adding body and bloom. The EQ stack is paired with more aggressive Presence and Depth controls, making it well-suited for rhythm tones, lead work, and heavier walls of guitar.

My favorite part, though, is the Advanced panel, which adds deeper control over both amps, including a high-pass filter for tightening the front end, Tight and Bright switches, and a Sag control that adds power-stage compression.

You also get a Power Amp switch between EL84 openness and 6973 density, and a Safe mode that applies zero-latency peak limiting.

The three fedDSP pedals sit in front of the amp section. SNAPPER handles transient shaping and compression with a soft analog-style saturation, ELEGANTE tightens lows and lifts leads with a mid push, and MORSO offers two flavors of thick, vintage-style distortion.

The built-in FX rack is also pretty cool. It includes three modules.

ECO DELAY is a tape-style echo with tempo sync, mono or stereo operation, switchable vibrato or chorus modulation, and feedback that can be pushed past 100 percent into self-oscillation.

WHOLE LOTTA VERB is a custom reverb sitting between plate and hall, with HP/LP filters for shaping the tail.

DOUBLE DENIM CHORUS adds width and motion, with flexible placement before or after the other FX.

Cabs and EQ are handled by a dual-cab section with 25 curated speakers and user IR support, plus phase flip and time alignment tools for blending. There’s also an 8-band graphic EQ with HP and LP filters that lets you shape the tone without reaching for another plugin, and UNMUD acts as a dynamic palm mute suppressor to tame muddy frequencies and bass buildup.

Every section in fedZEP can be bypassed individually, so the plugin also works as a standalone multi-effect unit. It runs at zero latency, which makes it a realistic option for live use and tracking.

The plugin is native on Apple Silicon (M1 through M5), and each license includes three simultaneous activations.

fedZEP normally sells for £100, but fedDSP is running a launch promotion at £70 until May 1, 2026. The discounted price also includes a Founders’ Club membership. A free trial is available from the fedDSP Downloads page, offering the full plugin with an occasional short silence inserted. The license is perpetual, with free updates for as long as fedDSP is around.

fedZEP is available in Standalone, VST3, Audio Unit, and AAX formats for macOS, and Standalone, VST3 and AAX for Windows.

Download: fedZEP by fedDSP (£70 INTRO)

Last Updated on April 17, 2026 by Tomislav Zlatic.