If your happy with the 4x Mini LFE and want to have full CM then you could keep them and get the LFE / TST units with an additional amp. Buy them all together or gradual upgrade to such. Below is example given with stereo only in pedals: Simvibe Chassis Mode Soundcard (Green Socket) Set to Stereo 2 Channels = Pedals *(possible future upgrade to quadraphonic using rear channels) Extension Mode Secondary Soundcard (Green Socket) Seat = LFE Seat Back = Shifter Create layers and alter controls per "output channel" (Chassis/Seat/Shifter) for the device being used regards the tones and settings you should apply. Sim Shaker Wheels (SSW) 1 Soundcard only needed (Asus DGX) recommended Configure Audacity (audio tool for creating effect wav files) using effects only in the first 4 channels Front Left & Front Right = Pedals (Mini LFE or ADX) Center = (Seat TST) Sub = (Seat LFE) This is not hard to do but like Simvibe requires some learning in how to use the software and playing around with different tones used for the effects. Unlike Simvibe you simply place the waveform your using in only the channels you want that effect to happen. Then you can adjust the amplitude (strength) of the waveform and save them as (in this case a 4 channel file). Once you spend time with a few simple tutorials and look at how the default settings are used. It is not that hard to learn how to use Audacity. I have learned a lot by trial and error (yes over many hours) and improved how effects feel greatly. SSW Community Possibilities: Some of us are working on high-quality wav files and create a series of effect files ready to go pre-configured for 1-6 channel users. This is nothing official or linked to @andre but is community-based to help users get the most out of SSW and give easy access to quality experience from it. We also apply a unique profile for the amplifiers (iNuke DSP Series) that outputs the frequencies to suit the tactile hardware being used. These are not needed but having control of tuning to match the characteristics and abilities of the tactile used is desirable and beneficial. So far good results seem to be happening but more specific fine-tuning is possible. Currently, I am testing with others on the following tactile hardware. ADX TST 239 / TST 329 / TST 429 Buttkicker Advance Buttkicker BK-LFE It would be good to find someone willing to offer feedback and do tests that owns Buttkicker Mini LFE with iNuke DSP amps. As these are popular but we want to get the most out of them and avoid the piston pang issue. The solution is not with (acoustic foam sales gimmick) used in the Mini lfe SE but controlling what causes it to happen via the iNuke DSP. Goals? What is possible is making available to the community profiles they just load that offer very good performance on the hardware they own. These include: Tuned iNuke profiles to match the tactile hardware Tuned EQ profiles to match individual cars for "audio tactile" (if being added) High-quality waveforms created for each effect in SSW for 1-6 channel configurations Still some ways to go and its not been decided yet if such is kept more private or shared in the community. Dreaming? I do have some interest in possibly for the future, building/designing 8020 cockpit components that are developed and tested to give the best installation and isolation. I see so many guys building brilliant wheel rims etc and think hey nobody's building seat/pedal sections specifically made/tested for tactile installation to easily install onto their 8020 rigs. Certainly, none of the companies selling such rigs offer high-end tactile solutions that are buy and bolt on.