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Soundstream Stealth ST4.1200D 4-Channel Class D Amplifier – 1200W
Used / Recovered – Sold As-Is
Soundstream Stealth Series compact 4-channel Class D amplifier, model ST4.1200D. Micro chassis used in cars, trucks, motorcycles, and tight installs. Faceplate marked 1200W. Front/rear high-pass and low-pass pots visible (50 Hz–500 Hz). Power and Protection LEDs on the top panel.
This unit was recovered from an abandoned storage unit. It has not been bench-tested or powered up by us. Sold as-is, where-is, with no warranty and no guarantee it powers on, passes audio, or that all harnesses are complete.
Manufacturer specs (ST4.1200D)
• Class D, 4-channel full-range
• Max power: 1200W (some catalogs list 1000W peak)
• RMS @ 4 ohm: 100W x 4
• RMS @ 2 ohm: 150W x 4
• Bridged @ 4 ohm: 300W x 2
• 2-ohm stereo / 4-ohm bridged stable
• MOSFET power supply
• High-level or low-level RCA input (approx. 200 mV–12 V)
• Auto turn-on / high-level signal sensing (when wired that way)
• Variable 12 dB high-pass and low-pass crossovers, 50–500 Hz (front and rear)
• Direct short, thermal, and overload protection
• Hybrid aluminum alloy heatsink
• Quick-disconnect power and speaker harnesses (factory style)
• Size: about 3” W x 1.5” H x 7.75–8” L
What you see in photos
• Amp body with original Soundstream Stealth faceplate
• Cut/remaining hookup wires on the harness end
• Cosmetic wear, scuffs, and storage dust
• Paperwork fragment visible in one shot (not a complete manual)
Not included / unknown
• Not tested
• May or may not include original RCA/high-level plug, remote, or full harness set
• No speakers, no wiring kit, no mounting hardware beyond what’s attached
Condition Used storage-unit recovery. Expect dirt, scratches, oxidized terminals, and unknown electrical history. Buyer inspects photos and assumes all risk. This is a parts/repair/project amp unless you test it and it works.
Good for Compact 4-channel installs (doors + rear or bridged rears). Popular on baggers and small vehicles because of the tiny footprint. Buyer confirms impedance and fuse/wiring before connecting to a battery.
Search terms Soundstream ST4.1200D, Stealth 1200W 4 channel, Class D micro amp, motorcycle amp, compact car amplifier.
Sale terms Sold as recovered from an abandoned storage unit. No returns for “doesn’t power on.”
