I've recorded a new demo comparing the Community and Full versions of Iron Stack.
This comparison focuses on one specific feature: the cabinet model.
The Community Edition uses a static cabinet response, while the Full version includes a dynamic cabinet model that reacts to signal energy and load.
The demo gradually increases both MASS and POWER, starting from a light crunch, moving into more extreme settings, and finally returning to a cleaner sound with a large amount of MASS applied.
At lower settings the difference is subtle, but as the amount of low-frequency energy increases, the two cabinet approaches begin to diverge quite noticeably.
The goal here isn't to showcase a particular tone, but to demonstrate what happens when a cabinet model is pushed into situations where a traditional static response may struggle.
Demo:
Iron Stack Community Edition:
https://budrinlabs.com/ironstack
As always, feedback is welcome. I'm particularly interested in whether you hear a meaningful difference between the static and dynamic cabinet approaches, and if so, where it becomes noticeable.
Iron Stack Released — A Breathing Wall-Gain Machine
VST, AU, AAX, CLAP, etc. Plugin Virtual Effects Discussion
Moderator: KVR Moderators (Main)
Iron Stack Released — A Breathing Wall-Gain Machine
2026-05-27T14:12:48+00:00
Iron Stack 0.1.0 — a responsive wall-gain amplifier built around overload, pressure and recovery dynamics.
Originally developed as an experimental branch of the amplab engine, Iron Stack slowly evolved into its own standalone project focused on massive nonlinear gain behavior and reactive cabinet dynamics.
Instead of aggressively removing low-end to keep high gain “clean”, Iron Stack lets the system overload, choke, recover and reorganize itself in real time. Sustained chords can literally fall apart and pull themselves back together while the cabinet struggles under master pressure.
The result feels less like a static amp snapshot and more like a huge nonlinear machine under load.
Sound-wise it ended up somewhere between:
* giant transistor stacks
* overdriven tube amps
* doom/sludge walls of gain
* industrial machinery barely holding together
Features:
* evolving nonlinear gain behavior
* dynamic overload recovery
* responsive cabinet breakup/stress
* highly reactive master section
* standalone app + plugin
No neural captures.
No IR obsession.
Just pressure, overload and controlled collapse.
Latest Demo:
https://youtu.be/5Zu40aaHm40
Project site:
BudrinLabs Iron Stack
Changes:
v0.2.0:
* reworked cabinet response under heavy master pressure
* smoother and more believable high-frequency overload behavior
* reduced harsh “digital itch” during saturation
* improved low-end collapse/recovery dynamics
* more elastic and reactive sustain behavior
* better integration between cabinet stress and gain topology
v0.2.1
* Added mirrored Windows audio output for the standalone version, allowing realtime demo/video recording while monitoring through ASIO devices.
* Reworked cabinet response under heavier overload conditions.
* Improved cabinet collapse/recovery behavior during sustained low-frequency pressure.
* Adjusted upper breakup response for smoother overload transition under extreme saturation.
v0.3.0
* New industrial-style front panel with drawn controls, toggle switches and status lamps
* Added standalone utility section with Noise Gate, Reverb and Cab Sim switching
* Added lightweight Freeverb-style room reverb, implemented inside the DSP engine
* Noise gate added for noisy single-coil setups and direct standalone recording
* Dynamic bypass retuned for smoother low-gain behavior and tighter high-gain lows
* Cabinet overload now has more usable headroom before speaker breakup
* Edge control now shapes both the high-end voice and the dynamic bypass response
* Improved low-gain feel and reduced “cold fizz” artifacts
* Updated cabinet behavior for a wider playable range before the speaker starts falling apart
v0.4.0
* Reduced input level for humbuckers and high-output pickups
* Less unwanted low-gain breakup and crackling
* Removed clicks and sudden sound drops while turning controls
* Smoother, more natural real-time control response
* Improved low-end control to prevent bass from overwhelming the distortion
* Wider and more useful midrange adjustment
* Reduced harsh high-frequency fizz
* Better cabinet headroom at clean and low-gain settings
* Added a free experimental Android version for use with USB audio interfaces (available on Project Site
)
Iron Stack was originally developed as an experimental branch of the amplab engine.
Main amplab thread:
https://www.kvraudio.com/forum/viewtopic.php?t=630286
kbudrin
https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=807768
Jump to
- The Main Forums
- ↳ KVR Studio Manager
- ↳ Getting Started (AKA What is the best...?)
- ↳ Instruments
- ↳ Effects
- ↳ Hosts & Applications (Sequencers, DAWs, Audio Editors, etc.)
- ↳ Guitars
- ↳ Mobile Apps and Hardware
- ↳ Soundware
- ↳ Samplers, Sampling & Sample Libraries
- ↳ Hardware (Instruments and Effects)
- ↳ Modular Synthesis
- ↳ Sound Design
- ↳ Production Techniques
- ↳ Music Theory
- ↳ Computer Setup and System Configuration
- ↳ DSP and Plugin Development
- ↳ DIY: Build it and they will come
- ↳ Music Cafe
- ↳ Sell & Buy (+Special Offers, Deals & Promos)
- ↳ KVR Experts
- ↳ KVR Developer Challenge 2026
- ↳ Everything Else (Music related)
- ↳ Off Topic
- ↳ Off Topic Classics
- ↳ Machine Learning and AI for Music Creation
- Official Company Forums
- ↳ 2getheraudio
- ↳ accSone
- ↳ Acon Digital
- ↳ AcousticsampleS
- ↳ AcousModules
- ↳ Agitated State
- ↳ AIR Music Technology
- ↳ AMG
- ↳ Ample Sound
- ↳ Antares Audio Technologies
- ↳ Apisonic Labs
- ↳ APU Software
- ↳ apulSoft
- ↳ AriesCode
- ↳ Arts Acoustic
- ↳ Arturia
- ↳ Audjoo
- ↳ AudioSpillage
- ↳ Audiority
- ↳ Best Service
- ↳ Big Tick
- ↳ Bitwig
- ↳ Controller Scripting
- ↳ Blue Cat Audio
- ↳ Cherry Audio
- ↳ CWITEC
- ↳ Embertone
- ↳ energyXT
- ↳ Eventide
- ↳ Expert Sleepers
- ↳ forward audio
- ↳ Future Audio Workshop
- ↳ FXpansion
- ↳ g200kg
- ↳ Harrison Mixbus
- ↳ HG Fortune
- ↳ Homegrown Sounds
- ↳ HoRNet Plugins
- ↳ Ilya Efimov Production
- ↳ Image Line
- ↳ Impact Soundworks
- ↳ Indiginus
- ↳ Insert Piz Here
- ↳ Ju-X
- ↳ Kirk Hunter Studios
- ↳ Kirnu
- ↳ Kong Audio
- ↳ Krotos
- ↳ Kuassa
- ↳ KV331 Audio
- ↳ LennarDigital
- ↳ Les Productions Zvon
- ↳ Liqube Audio
- ↳ Loomer
- ↳ LVC-Audio
- ↳ Maizesoft
- ↳ Manytone Music
- ↳ Media Overkill (MOK)
- ↳ MeldaProduction
- ↳ Mellowmuse
- ↳ MIDIMood
- ↳ moForte
- ↳ Mozaic Beats
- ↳ mucoder
- ↳ MusicDevelopments
- ↳ Tips & Tricks
- ↳ MusicLab
- ↳ MuTools
- ↳ New Sonic Arts
- ↳ NUSofting
- ↳ Oli Larkin Plugins
- ↳ Orange Tree Samples
- ↳ patchpool
- ↳ Photosounder
- ↳ PlugInGuru
- ↳ Polyverse Music
- ↳ Precisionsound
- ↳ Premier Sound Factory
- ↳ Psychic Modulation
- ↳ Realitone
- ↳ Resonance-Sound
- ↳ Reveal Sound
- ↳ Roger Linn Design
- ↳ rs-met
- ↳ S3A: Spatial Audio
- ↳ SaschArt
- ↳ Smart Electronix
- ↳ sonible
- ↳ SonicBirth
- ↳ Sonic Reality / eSoundz.com
- ↳ Soundiron
- ↳ SPC Plugins
- ↳ Sugar Bytes
- ↳ TAL Software
- ↳ Tokyo Dawn Labs
- ↳ Tracktion
- ↳ Tweakbench
- ↳ u-he
- ↳ u-he Linux support
- ↳ UJAM
- ↳ United Plugins
- ↳ VAZ Synths
- ↳ Virharmonic
- ↳ xoxos
- ↳ XSRDO - SynthCraft
- ↳ ZynAddSubFX
- Site Stuff
- ↳ Site Stuff
- Archived Forums
- ↳ AlgoMusic
- ↳ easytoolz
- ↳ Elevayta
- ↳ Hollow Sun
- ↳ LinPlug
- ↳ Muse Research and Development
- ↳ Shuriken
- ↳ SoHa Sound Design
- ↳ Soniccouture
- ↳ Topten Software
- ↳ Valhalla DSP
- ↳ CK Modules & VST
- ↳ Sennheiser AMBEO
- ↳ Muon Software
- ↳ Westgatesounds.net
- ↳ Squaredheads
- ↳ Sonigen
- ↳ CFA-Sound
- ↳ Back In Time Records
- ↳ Livelab.dk
- ↳ Skytopia
- ↳ audioD3CK
- ↳ Inspire Audio
- ↳ Krakli
- ↳ Drumdrops
- ↳ Futucraft
- ↳ OverTone DSP
- ↳ RaXnTraX
- ↳ solar3d-software
- ↳ Signaldust
- ↳ Soundemote
- ↳ ReleaseLab (Powered by Artist Expansion)
- ↳ Wolfgang Palm
- KVR Forum index
- All times are UTC
- Delete cookies
