I actually use the Herbie's under my DVD player with excellent results, but also use vibrapods under full range floorstanding speakers (with laminated or "security" glass between the carpet and the pods, which the speakers sit on) with excellent results. Please note, however, that this setup is all sitting on a hardwood over wood subfloor suspended floor. If you do searches at Audioasylum, for example, you will actually find a great number of audiophiles who prefer isolating as opposed to coupling with respect to speakers on suspended floors, and I am certainly one of them. I used to have the speakers spiked to the floor and isolating with vibrapods is a huge improvement. If you are on a concrete floor, things may be very different; the only way you can find out is to experiment. You may up utilizing both systems (isolation and coupling) as Driver has to obtain the best results, but it is certainly not surprising to me the isolating the high fequency module from the low frequency one has positve results with the VR4's. And in the overall scheme of things, experimenting with pods or Herbies footers is relatively inexpensive compared with most aspects of this hobby even if the results are less than satisfactory for you.