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Small amp. Big difference.
The Kicker 47KEY2004 isn’t just an amplifier — it’s an automatic DSP tuning system built into a compact chassis. Plug it in, run the included calibration mic, and it tunes your system in minutes.
Factory system upgrade made easy.
🔊 Power Output (RMS)50W x 4 @ 4Ω
75W x 4 @ 2Ω
Plenty of clean power to wake up factory speakers or run upgraded coaxials/components.
🧠 What Makes KEY DifferentAutomatic DSP Setup (included microphone)
Time Alignment
40-band EQ per channel
Crossover management
Phase correction
Auto gain matching
Start/Stop vehicle compatible
It literally listens to your system and corrects it.
⚙️ Key FeaturesCompact footprint (easy hidden installs)
Accepts speaker-level or RCA inputs
FIT+™ integration (OEM safe)
Selectable bi-amp mode
Built-in crossovers
Factory head unit upgrades
Lease-friendly installs
OEM integration without replacing radio
Daily drivers needing clarity, not just volume
If your stock system sounds muddy or flat, this fixes staging, clarity, and balance without replacing everything.
📦 Condition✔ Brand New
✔ Factory Packaging
Kicker KEY200.4, 47KEY2004, Kicker smart amplifier, 4 channel car amp, DSP car amplifier, OEM integration amp, compact car audio amp, automatic tuning amplifier