Juried Engineering LM308N LM308 - Precision Op Amp (Pack of 1): Amazon.com: Industrial & Scientific
ProCo Rat LM308 vs OP07 Op-Amp Chip - Does It Drone? - YouTube
LM308 MOTOROLA/ON IC Chips | Censtry
Pro Co Rat – Catalinbread Effects
Proco Fat Rat! | Page 2 | Telecaster Guitar Forum
RAT 2 questions. LM308AN, missing battery screw.
Lm308 Chip For Modding Rat Distortion Pedals | Reverb
1988 ProCo RAT (LM308) | Gain Appreciation — CSGuitars
Buying a RAT which the owner says is from 1987 with a LM308 chip. Legit? The price he's asking is same as a used DS-1 which for me seems like a bargain. :
Unlocking the Secrets Behind the Rat Distortion Pedal - KEITH HOLLAND GUITARS