3 Monkeys Amps is a boutique tube amplifier company based in Raleigh, North Carolina, founded by touring guitar tech Greg Howard, amp builder Ossie Ahsen (of Blockhead Amps), and Aerosmith rhythm guitarist Brad Whitford. The first production model, the Orangutan, debuted in 2008 — a 4x6V6 amp notable for its six-position rotary Voice switch that cycles through a range of vintage American and British tones.

The lineup grew to include the Grease Monkey, a four-EL84 British-voiced head with switchable high/low input gain; the Sock Monkey, an 18-watt combo paired with a 12-inch Celestion Greenback; the Hi-Baller, a hybrid design that marries the Orangutan circuit with a 1950s tweed-style aesthetic; and the BW119, a signature amp built to Brad Whitford's live Aerosmith specs. The amps are hand-wired and produced in small batches.

Brad Whitford used 3 Monkeys rigs on Aerosmith tours for years, and the amps have also been associated with players such as Elvis Costello and Tyler Bryant. Reviews in outlets like Premier Guitar and Vintage Guitar have highlighted the amps' dynamic response and touch sensitivity as defining characteristics of the brand's voice.

3 Monkeys has 9 products cataloged on Equipboard, including Guitar Amplifier Heads and Combo Guitar Amplifiers. Their gear is featured by 9 artists, with the strongest followings in Rock, Pop, and Folk, World, & Country. Notable users include Brad Whitford, Per Gessle, and Elvis Costello.