Metra WM-LOCKN Universal Car Audio Line Out Converter - Add Amplifier to OEM Radio - Black
Metra WM-LOCKN Universal Car Audio Line Out Converter - Add Amplifier to OEM Radio - Black
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Metra WM-LOCKN Universal Car Audio Line Out Converter - Add Amplifier to OEM Radio - Black

110 ratings

Key item features

  • Seamless OEM Integration: This universal line out converter efficiently converts factory radio signals into RCA outputs, enabling straightforward connection of an aftermarket amplifier without extensive rewiring.
  • Robust Signal Handling: Designed with 2-channel stereo input, the device reliably handles up to 55 watts per channel and features 55W short circuit protection for safe operation with OEM radios.
  • Precision Gain Control: An adjustable gain control allows users to fine-tune the output level, ensuring optimal matching with the specific requirements of the connected car amplifier.
  • Automatic Amplifier Activation: Equipped with signal sense turn-on, the converter automatically detects an audio signal and sends a remote signal to power on the amplifier when the vehicle starts.
  • Convenient Remote Control: A dedicated stereo level knob is included, providing accessible volume adjustment from the vehicle's dash for user convenience.
  • Compact Mounting Design: Its compact, easy-to-mount design simplifies the installation process, allowing it to fit neatly and discreetly behind the dashboard.
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Customer ratings & reviews

4.1 out of 5 stars
stars
110 ratings36 reviews
How item rating is calculated
  1. 5 stars67% (74)
  2. 4 stars9% (10)
  3. 3 stars7% (8)
  4. 2 stars3% (3)
  5. 1 star14% (15)

Reviews summary

Neutral

  • : Can be straightforward, but may require effort and troubleshooting.
  • : Wires install quickly and fit vehicles, but some remotes fail.

Cons

  • : May not reach subwoofer effectively.
  • : The unit outputs audible distortion during playback.
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Showing 1-3 of 36 reviews

Dec 12, 2024
Reviewer name: john
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

run auto subwoofer from your rear

You do not have to be a technician to install. Connects rear deck speaker wires to power stand alone subwoofer and enabling auto shut on and off of amp on subwoofer, the latter powered by ground cable and power cable hooked up to batter terminal directly.

Incentivized Review
Helpful?2CVRAI9CDHIL172649875
May 25, 2025
Reviewer name: Damian
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

love the convenience of ordering something so i didnt have to leave with stereo apart n i can hookup amp now with ease with this adapter.

Helpful?2CVRAI9CDHIL172649875
May 15, 2025
Reviewer name: Jeffry
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

perfect item to get for ur car amplifiers. Hooked it up in 20 minutes and it worked perfectly

Helpful?2CVRAI9CDHIL172649875
Current price is $25.28
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