Yep, 1 inverted 1875 using Scott Nixon's boards, and two, more or
less identical non-inverting 3875's using BrianGT v.1 boards. One
of the 3875's is shown in FredT's post in Wayne's GC group build
thread below.I never did get a good comparison of the two types. Both sounded good.
I was using the 1875 to independently drive the two drivers on a
single Tower 2 Pi with bi-wiring jacks. It worked like crazy in a
situation where good stereo was out of the questions. I believe you
have done a 3875 if I remember correctly.