The Meatwad "L'Enveloppe Filter Ultime"
Effects Loop !
True Bypass !
Sweep LED !
A Lovetone Meatball Clone: An envelope filter with unparalleled parameter control, true bypass, & a smaller footprint.

FollowerControls:

Attack - How Fast Sweep Begins
Decay - How Fast Sweep Returns
Sense - Follower Input Level
Trigger - Full, Half, or None
Sweeps Up or Down!

Filer Controls :

Resonance - Filter Quack
Intensity - Sets Idle Freq. and Limits Sweep Range
Six Frequency Settings! - High, Low, or Band Pass
FX Loop - Sweep Any Effects Without Losing Your Trigger!
Plus! Clean Blend! DC Jack! True Bypass ! Status LED !

Tips:
ATTACK and DECAY work together. If decay time is shorter than attack time, no sweep will happen.If short sweeps cause ‘ripple’ (glitchy sweeps) try turning up DECAY time and turning down SENSE.
RESONANCE turned way up may make VERY LOUD peaks or cause distortion. Use with care.
INTENSE controls both where the filter idles, (with no input, or weak input) AND how high it sweeps. I typically suggest starting with this all the way DOWN.
Use lower INTENSITY and RESONANCE settings along with half BW trigger for subtler effects.
BP setting only allows frequencies between upper and lower filter cut-offs to sweep, where LP only sweeps the high end and HP only sweeps the low end. For Bass, try LP setting.
ENV LED will display the envelope intensity. The brighter it is, the higher the filter frequency.
Many effects (such as distortion or compression) reduce envelope intensity. For best operation this effect needs your clean instrument signal at its input. If you want fuzz or distortion with your filter, put it in the FX LOOP. SEND goes to fuzz input, fuzz out goes to RETURN.