This is a great, cheap filter. It sounds weird with the resonance up - very unique. It's not "the best" but has character and is a lot of fun.
TAKAAB 3LFO - Three Adjustable LFOs in one Eurorack Synthesizer Module (6HP)
14 Mar, 2019
Cheap and Cheerful
This module has some limitations, but you need to remember that it doesn't cost much!
Each of the LFOs has a different range of speeds with the top one being either audio rate or the kind of speed you would use for vibrato, the bottom one doing slow modulation and the middle one somewhere in between. The saw tooth is useful as a modulation source and the pulse makes a useful clock.
The main downside is that the voltage range is not very high only going a couple of volts above and below zero. This means that you come across the occasional module that won't accept the pulse as a clock/trigger. The upside to this is that you can sometimes get away without attenuating the triangle wave when you normally would have to attenuate other LFOs.
Overall this is very good value for money and gives you 3 LFOs in a small space. There are definitely better modulation sources than this but they will cost more and take up more space in the rack.