FK Rig changelog

FK Rig · Early access · All changelogs

1.1.0 - 27 October 2026

The amps sound much closer to the real thing. We measured the high-gain amps against recordings of real amps and corrected the circuits where they were off.

• Tighter, less muddy high gain. Grid current and blocking are now calculated as a real circuit in every tube stage, also behind the tone stack - chords stay defined. Affects 16 amps.
• New Tight control (0-10) on seven high-gain amps: a high-pass in front of the distortion, matched to the measurements. 5 is the amp's tuned value.
• Power amp and speaker: the phase inverter is a real tube stage and limits on its own; the power amp's output impedance follows the negative feedback as on the real amp. Less boom between 80 and 160 Hz, more punch on low notes.
• Master on modern high-gain amps spread out: the power amp no longer saturates from 2-3, palm mutes keep their punch. Factory presets are converted and sound the same.
• Gain curves per amp: several amps now crunch in the lower part of the range instead of saturating right away. German Fire gets the channels Lead and Ultra.
• Less aliasing: pre-amps and power amp with anti-aliasing; the heaviest amps calculate at 176.4 kHz or more except in Eco.
• Presets: loading a preset or project now rebuilds the chain right away (before, the previous chain could keep playing, often with its delay).
• Labels on pedals and amps no longer overlap; switches show name and position on two lines.
• About window in the license area with version and third-party notices.
• Fixed: the standalone application no longer crashes at start under JACK/PipeWire (amp setup about five times faster). Linux: the plugin no longer crashes when loaded in FK Audio Suite.
• Windows standalone without ASIO for now (WASAPI and DirectSound); inside a DAW its driver is used.

1.0.0 - 23 October 2026

The first release version.

• 24 amps calculated from their circuits, among them seven new high-gain amps and four FK originals; every amp shows whether it follows a schematic, is inspired by one or is an FK original.
• 22 vintage pedals calculated from their schematics: overdrives, distortions, fuzzes (with the guitar's volume control in front - the fuzz cleans up when you roll back), compressors, phasers, chorus, flanger, analog delay, octave, tremolo and vibe.
• Cabinets calculated physically from enclosure, speaker, microphone, position and room: 12 cabinets, 15 speakers, 7 microphones, 4 rooms with stereo room microphones. Amp and cabinet act on each other.
• Amp Builder: build an amp from tube stages, tone stacks, phase inverter and power amp, play it and save it as .fkamp. Every amp of the catalogue can be the starting point.
• Effect Builder: design a pedal from 16 circuit blocks; controls appear on the pedal by themselves. Ten factory circuits as starting points.
• Quality Eco, Standard, High and Render (Render automatically on offline export).
• License area: several keys side by side, overview of all keys on this computer, checked offline.
• English and German user interface.
• Window fits every screen, also on laptops with 150 % scaling.
• Delivery: Linux VST3 archive with install script and standalone AppImage; Windows installer and zip; no Visual C++ runtime needed.
• Lite with Tweed 59 and British 800, three cabinets, gate, compressor and overdrive.