Brucegregori
Experienced
Looking for a vintage take on this one...
Check it out, FW 3.02 beta #2, you can select diode type and quantity now.
DS-1 gain stage looks like this
DS-1 tone control looks like this at noon (red line)
DS-1 = Rat, Diode 1 1N4148, Diode 2 1N4148, quantity 1+1, Mid Freq 500Hz, Mid -12dB (DS-1 tone circuit dip), Low Cut 5.50, High Cut 1500Hz (that's where it sounded right to me), slew limit 10 (because reasons)
DS-1 uses a M5223AL op-amp, the rat uses an LM308 op-amp, increasing the LM308 op-amp slew rate makes up for some difference but it won't be exact, lower slew rate accounts for deceased high end, my consumer peasant's understanding being that slew rate amounts to op-amp resolution, 10 bring highest, to say anything below max starts filtering off top end.
https://reverb.com/news/swapping-boss-ds-1-op-amps-hear-20-variations-in-action
https://www.electrosmash.com/proco-rat