Gato Preto Classics is a Brazilian builder of all-tube guitar amplifiers, founded by a small group of friends with backgrounds in engineering, hi-fi audio, and music. Working out of an artisanal workshop, the company assembles its amps one by one in limited runs, with components hand-picked by the founders. The brand markets itself as "The House Of Tube Amplification," and frames its mission around "inclusão valvulada" — making boutique tube tone accessible to working guitarists.

Its product line centers on a handful of tube heads and combos. The Vira-Lata, the company's debut model, is a 10-watt head paired with a 1x12 cabinet aimed at vintage, blues-leaning tones. The Gamba is a larger 30/15-watt all-tube amp, the Hotdog is a portable practice/gig/studio combo, and the Toro extends the line further up the power range. Designs lean on classic circuit topologies but are presented as original layouts rather than direct clones.

The brand operates primarily in the Brazilian market and has historically reached buyers through its own social channels and through resellers and used-gear listings on platforms like Mercado Livre and OLX, rather than through wide international distribution.

Gato Preto Classics has 2 products cataloged on Equipboard, including Combo Guitar Amplifiers.