Spinlight Studio · Paradox FX Series overviewParadox FX Series · Rhythmic & stereo filtering
Mod Filter
Make filtering part of your arrangement.
Choose the frequency range, filter type and sweep shape, then let Mod Filter turn a steady part into a rhythmic one. Go from smooth auto-wah to repeating ramps and stereo sweeps, with tempo sync when you want the filter locked to your track.
More than a filter sweep
A static part can do a lot more.
Mod Filter changes how a part develops without asking you to rewrite it. Define where the sweep opens and closes, add resonance to emphasize that motion, then choose a sine, triangle or sawtooth cycle that suits the groove. The same controls can give a sustained sound a slow sweep or make a repeating part feel like it has a new rhythm.
Hear Paradox | Mod Filter
Min & Max frequency
Keep the sweep where it works.
Set the minimum and maximum frequencies to define the filter’s travel. Open the range for a dramatic sweep, or bring the limits closer together when you want the effect concentrated on one part of the spectrum.
Resonance emphasizes the cutoff as it moves. Adjust it alongside the frequency range to choose how clearly that sweep stands out against the original part.
- Defined sweep limits
- Adjustable resonance
- Wet/dry blend
LFO shape & timing
Choose the rhythm of the sweep.
Sine gives you a rounded cycle, triangle moves at a steadier rate, and the rising or falling sawtooth shapes give you a ramp with a reset. You can choose an opening or closing pattern instead of making every sweep move the same way.
In free-running mode, LFO Tempo and Period set the timing. Turn Sync on to use your DAW tempo and a note division instead, so the filter repeats with the track.
- Four LFO shapes
- Free-running or DAW sync
- Musical note divisions
Four filter types
Change the filter and hear a different part.
Low-pass opens and closes the top end, high-pass moves through the low end, band-pass gives the sweep a vowel-like quality, and notch sends a moving cut through the spectrum. Each gives the modulation a different role in the arrangement.
Advanced shaping
Give left and right different points in the cycle.
L/R Phase offsets the left and right LFO phases while keeping the same modulation rate. That lets the filter travel differently on each side of the stereo signal, rather than making both sides open and close together.
LFO Smooth softens either sawtooth shape toward a triangle. Use it to make a repeating ramp less abrupt, then set the Mix control for as much filtered audio as the part needs.
- Stereo LFO phase offset
- Sawtooth smoothing
- Four filter modes
Demos & walkthroughs
See Paradox in action.
Spinlight Studio · Paradox FX Series overviewCustomer reviews
What Mod Filter users are saying.
“good”
“Magic for synth leads.”
“Amazing!!!!”
A few useful answers
Frequently asked questions
Which filter types are included?
Low-pass, high-pass, band-pass and notch. Each uses the modulation to move its cutoff through the chosen frequency range.
Can the filter sync to my DAW?
Yes. With Sync enabled, DAW tempo and the selected note division set the cycle. The free-running Tempo and Period settings are overridden.
Can I choose the sweep limits?
Yes. Min Freq and Max Freq define the sweep range, so it can stay focused or travel across a broader part of the spectrum.
Does L/R Phase invert the audio?
No. It offsets the left and right modulation phases. It does not invert audio polarity.
Does LFO Smooth affect every shape?
No. It blends the rising and falling sawtooth shapes toward a triangle. It has no audible effect on sine or triangle.
Can I try the complete plugin?
Yes. The fully functional 14-day trial requires no credit card, and updates are free for life.

