We don’t have an actual A, AB, B or C to compare, but vintage Ds are rather prominent in upper-scale studios, where it’s typically the go-to compressor for just about everything. The D is known for a robust low end and an almost imperceptible smoothing out of the program material...
incorporating a switchable tube stage to add that special thermionic character when required. Both are excellent preamps in their own right, with the M5 leaning more towards the neutral and transparent end of the range, and the Gain Station being a little more colourful when required, but still...
Environmental Transparent 85mm PVC Suction Cup with a Hole for Pet Hammock US$0.08-0.15 / Piece Plastic Rectangle Round Square Tube Insert Rubber Foot PE Plastic Ribbed Insert Universal Inside End Cap for Tube Sign-Posts ...