Reyes 303 + Kill Filter
Key Features
- Component-modeled 1959 Harmony H303 Class A tube circuit calibrated from real hardware voltage measurements
- Reyes 303 one-knob saturation path built around a 12SQ7 triode preamp and 50L6 pentode output stage
- Dynamic tube drive that responds to input gain instead of applying a fixed distortion curve
- Kill Filter combines DJM-style resonant high-pass/low-pass sweeps with Reyes 303 tube coloration
- Momentary full-kill switch and MIDI-assignable controls for performable filter drops and automation moves
- VST3 and AU plugin formats for Windows and macOS
Description
Reyes 303 and Kill Filter are two compact effects from Reyes Amplifonics built around the developer's component model of a rebuilt 1959 Harmony H303 tube amp. Reyes 303 gives you the raw Class A tube circuit as a one-knob saturation tool, while Kill Filter turns the same tube color into a performable DJ-style filter effect.
The amp model is based on a 12SQ7 triode preamp feeding a 50L6 pentode output stage, calibrated from voltage measurements taken on the physical circuit. That topology gives Reyes 303 a direct, touch-sensitive drive character that moves from smooth even-harmonic warmth into thicker pentode compression as the input level rises.
Kill Filter uses a super-resonant high-pass/low-pass filter, a momentary full-kill switch, and MIDI-assignable controls for automation-heavy sweeps. Because the signal also passes through the Reyes 303 saturation model, the filter can add texture to drums, synths, bass, or full loops instead of sounding like a clean utility EQ.
Both plugins are deliberately simple: Reyes 303 is best driven by a gain or pedal plugin before it, while Kill Filter is designed for hands-on motion. They ship as VST3 and AU plugins for Windows and macOS through the developer's WooCommerce product pages.
Frequently Asked Questions
What is the difference between Reyes 303 and Kill Filter?
Reyes 303 is the raw Harmony H303-inspired tube circuit as a simple saturation plugin. Kill Filter adds a resonant high-pass/low-pass filter and full-kill switch, then runs the signal through the Reyes 303 saturation model for extra color.
How should I drive Reyes 303 for stronger saturation?
The developer recommends placing a gain plugin or pedal emulation before Reyes 303 to push more level into the modeled preamp stage. The input drive determines how hard the virtual 12SQ7 preamp and 50L6 power tube respond.
Does Kill Filter work as a performance effect?
Yes. Kill Filter is designed around MIDI-assignable controls, automation, a momentary kill switch, and resonant sweeps, so it can be played live on loops or automated across transitions.
Are these the same as the paid Triode plugin?
No. Triode is the expanded paid version with extra gain, an impulse-response loader, an oscilloscope, and a spectral viewer. Reyes 303 provides the core circuit, and Kill Filter uses that circuit as coloration inside a filter effect.
