Ignitions and Electrical› Ignition Boxes and Components
Alpine
4-Channel Class D Car Amplifier
SKU: PDR-F50
Moderate — 2–4 hours
Description
This amplifier delivers 85 watts RMS x 4 channels at 4 ohms, 125 watts RMS x 4 channels at 2 ohms, and can be bridged to 250 watts RMS x 2 channels at 4 ohms. It features speaker-level inputs with signal sensing for automatic turn-on, as well as variable high-pass and low-pass filters adjustable from 50-400 Hz.
It also includes thermal and current protection circuitry, a variable bass boost, and 4/3/2 channel operation capability. The compact dimensions are 9"W x 7.12"L x 2.8"H.
Fitment
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Available on iOS & Android
Specifications
| Brand | Alpine |
| Part Number | PDR-F50 |
| Category | Ignitions and Electrical |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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