The ProCo RAT has been in continuous production since 1978 and has never really fallen out of favor — a distortion circuit built around the LM308 op-amp that produces a specific, aggressive, harmonically rich clipping character that players from Jeff Beck and Thom Yorke to Graham Coxon and Dave Grohl have used on landmark recordings. The RAT 2 is the refined version of the original RAT, adding a clipping LED and the Filter control that replaced the original Tone knob — Filter sweeps from bright and cutting to dark and woolly, running in reverse from what most tone controls do.

The 1998 USA-made flat box designation identifies this as Kalamazoo-era production — the period before ProCo's manufacturing moved to China, and the version that collectors and players specifically seek out for the LM308 op-amp and build quality of that era. Very good condition. The battery compartment cover has been replaced. Tested in our shop - ready to use.  No power adaptor included.

Mahar's Vintage Guitars is a brick-and-mortar and web-based retailer. We are happy to talk with you before you make a purchase.   Please reach out if you feel so inclined! We cross market our items here and on our own site, so items are subject to sale elsewhere at any time (however we will never cancel a sale if it happens here first). See our profile here, our Google reviews as well as our 100% positive Reverb feedback. Also, Reverb limits us to only 25 pictures of our items. There is a good chance we have more. Contact us if you’d like to see them.

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Shipping policy:

Shipments will require signature on delivery, no exceptions.  If there is damage, the buyer must retain all packing materials intact and picture them immediately and send them to .  Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely, but we are taking these additional measures to make sure you are happy with your purchase.