I love this module, and it's surprisingly versatile. The ability to input different signals to the LP, BP and HF inputs can lead to some really interesting sounds, although using them individually they also sound and work great. The filter itself has a very unique and warm character, the LP in particular has a lovely "fuzziness" about it. As with a lot of the Doepfer modules a bit of creativity will get a lot out of a very affordable module. I have had this module for about 6 months now and I am still enjoying experimenting with different modulation sources and combinations of inputted signal. A great character filter and great value for money.