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Shop Stetsom amplifiers and processors at JS Ultimate Sounds — the Brazilian brand that built its reputation on compact Class D amps that make honest power for the money. From 4-channel Bravo HQ models to high-output monoblocks, every Stetsom amp we sell is genuine, in stock, and ready to ship.
Stetsom Amplifiers
Stetsom amps cover the whole build. The Bravo HQ 400.4 and Bravo HQ 800.4 are 2-ohm-stable 4-channels for door speakers and pro-audio mids, while the Bravo Attack 3000 brings full-range monoblock power for subwoofer duty. Browse all Stetsom amplifiers.
Stetsom Processors & Bass Controls
Stetsom's Tremor STT42 bass restoration processor and the wider Stetsom signal processor range restore the low end that factory head units roll off — the cheapest real upgrade on a stock-radio build.
What to Know Before You Buy
Like most Brazilian-built amps, Stetsom models are rated at a specific impedance and want healthy voltage to hit their numbers. Check your subwoofer wiring against the amp's rated load — our subwoofer wiring guide covers ohm loads — and set the gain properly with our amp tuning guide.
Why Buy Stetsom From JS Ultimate Sounds
We ship genuine Stetsom product with warranty support and fast delivery. New to the brand? Read our honest Are Stetsom Amps Good? review, or message us with your subs and we'll confirm the right model before you order.