Alpine PDR-F50 4 Channel 4 x 85W RMS

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Concentrated power - Alpine managed to pack more power per square inch into their PDR-F50 4-channel Power Density Reference amplifier than almost any other amp in its class. The PDR-F50 can put out 85 watts RMS per channel, giving extra clarity and volume to your full-range speakers, and it'll fit in almost any of the tiny spaces you find in many cars and trucks these days. You can also use this versatile amp in 3-channel mode, driving your speakers with the front channels, and bridging the rear channels to send up to 250 watts RMS to your sub.

Model: Alpine PDR-F50

Product Description


Tone control

Alpine included the tone controls you'll need to fine-tune your system so your speakers sound their best. You can use the high-pass filters to remove the extreme low bass from your full-range speakers, so they'll play more efficiently. If you plan on running subwoofers with your PDR-F50, you can adjust the low-pass filters and bass boost to get just the right bass tone.

Superior sound and build quality

Alpine built the PDR-F50 to exacting physical and electronic standards, resulting in a tough, powerful amp with an incredibly clean and noise-free output. All the electrical connections are made on one side, for more convenient and neat installations. Speaker-level inputs allow you to use this amp in almost any system, even one with a factory radio. And you can rotate the badge, so the Alpine logo can always display right side up no matter which way you mount your PDR-F50.

  • 4-channel car amplifier
  • 85 watts RMS x 4 at 4 ohms (125 watts RMS x 4 at 2 ohms)
  • 250 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • separate variable high- and low-pass filters (50-400 Hz, 12 dB/octave) on front and rear channels
  • selectable bass boost (0, 6, or 12 dB at 50 Hz) on rear channels
  • preamp and speaker-level inputs
  • speaker-level inputs require RCA adapter cables
  • Class-D amplifier design
  • MOSFET power and output stages
  • fuse rating: 30A x 2
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9"W x 2-1/16"H x 7-1/8"D
  • warranty: 1 year

Additional Information

Additional Information

Amplifier Type 4 Channel


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