Hi - my first post here. Thanks to Frank's Fall sale I am about to take delivery of a FET Valve 400R Amp, FET Valve CF Preamp, and FET Valve Hybrid DAC. As I am somewhat limited currently in space (the new gear results in a net gain of one component), I was wondering if any of these components can be safely stacked on top of another component...I am guessing I wouldn't want to stack anything on top of the amp but wasn't sure about the DAC or Preamp. The other component in the mix is an OPPO 105, which is a fanless design with ventilation slots on the top. The OPPO runs relatively cool with nothing currently stacked on top of it. I do have a Plan B if they are not (stackable) but just thought I'd check here first...
Thanks.