by carlaz » Tue Oct 29, 2019 8:15 pm
For what it's worth, I believe that on the early Byrds albums McGuinn played through two chained studio compressors and thence straight into the board. What kind of console that was, I don't know: possibly a custom-built thing (still common in studios then), probably tube-powered. (Tape may have smoothed off the very high end, as well, while also adding some compression on its own.) LIkewise, I'm not sure about the compressors that were used, but possibly LA-2As or 176s (the more famous successor of the 176, the 1176, wasn't released until after the first couple of Byrds albums had been released). T-RackS includes an "inspired by LA-2A" compressor plugin, though I think of the "Tube Compressor" rack unit in Amplitube as something more like "Fairchild Lite" (as T-RackS, again, has a full-on "based on Fairchild 670" plugin). Still, since you can use rack units almost anywhere in the Amplitube chain, you could just try putting a few "Tube Compressor" units in a row; perhaps the first set fast, just to catch the biggest transients from your guitar, and the second a big slower and squashier to smooth out everything else?
If you do want an amp model in the sound, I'd think a "based on Vox AC30" (perhaps the "top boost" model) would be the way to go. I think McGuinn did use those, too -- but you'd be right, I think, in identifying (serial) compression as the main key to his sound.