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The Pioneer DEH-P4001HD, is essentially the DEH-4000UB, an in-dash CD receiver, but with an HD radio.

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screen is clear in any light, even direct sunlight

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works perfectly with the iPhone, no compatibility complaints

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large number of expandability options for more functionality

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signal clarity on par with high-end head units

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installation is easy enough for amateur installers with a wiring harness

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  • Only 3 words are allowed.

easy to do the wrong command, especially if driving over a bump

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navigation knob is temperamental, needs to be pushed in sometimes but not others

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  • Only 3 words are allowed.


The Pioneer DEH-P4001HD, is essentially the DEH-4000UB, an in-dash CD receiver, but with an HD radio. The Pioneer DEH-P4001HD allows USB connection for your iPod or MP3 files on USB, and an AUX input for digital music players. Pioneer's Advanced Sound Retrieval system enhances audio reproduction up to 20 kHz frequencies, restoring the lost sound in compressed MP3/WMA files etc. The unit can be controlled by a passenger directly, and the list button can be held to show a list of artists on your device. The Supertuner IIID ensures a strong broadcast signal, with less distortion and noise. There are also 3 RCA Hi-volt (4 V) pre-outs for adding external amps, and a MOSFET, built-in 50 W x 4 amplifier for reduced distortion and a cleaner sound. With a bluetooth-capable cell phone, it is possible to make and receive calls through the head-unit's microphone and hear people through the car's speakers. The DEH-4001HD, is a slightly updated version of the DEH-4000UB and also has a 7-way rotary commander. The wireless remote makes the unit easier to control, and the HD radio is an exclusive AM/FM system with over 1000 HD radio stations to listen to without monthly fees.


  • OEL Display
  • HD Radio
  • Advanced Sound Retriever
  • Three 4 V RCA pre-outs
  • Bluetooth Capability
  • Wireless Remote Control
  • Supertuner IIID
  • Sirius and XM Satellite Radio Ready
  • Supports MP3, WMA, WAV, AAC
  • Built-iniPod USB Direct Control
  • Built-in AUX input
  • Green, Blue Button Illumination
  • 50 W x 4 MOSFET Amplifier
  • Rotary Volume Control
  • 1 Year Warranty
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