The RetroSound® Grand Prix perfectly compliments the interior styling of the 1980s Mercedes, BMW, & Porsche vehicles while updating the audio technology to today's standards. The unique design of the Grand Prix features authentic paddle-style controls along with low profile push-buttons and a 32,000 color digital display. The Grand Prix is the perfect solution for updating the audio in your classic Mercedes, BMW, or Porsche while maintaining the original style of the factory electronics. A new Din Kit (#296) is included for an easy installation and factory-like fit.
The Grand Prix is available with your choice of 3 different feature sets:
Motor 4HD
- HD Radio® Technology
- SiriusXM-Ready® (SXV300V1 tuner sold separately)
- Built-in Bluetooth® (Version 5.0)
- Includes Bluetooth® microphone for hands-free calls
- Made for iPod®/iPhone®
- AM/FM RDS tuner with 30 presets
- Selectable tuner frequencies USA/EUR/AUS/JAP/RUS
- Auxiliary input for portable devices
- Two USB ports for flash drives and other devices
- 2.1-amp device charging via USB
- Built-in 300-watt (peak power) Mosfet amplifier
- 25 watts RMS x 4 channels – TrueRating™
- Dual RCA pre-outs for external amplifiers
- Dedicated subwoofer output
- 32,000 color display
- Non-volatile memory
- 2-Year Warranty
- Assembly is required
$60 SXM Service Card - when you purchase and activate your RetroSound® Radio with SXV300V1 SirusXM® Tuner
Plan options:
- 12/$99 – 12 months of the Platinum Plan for $8.25/month
- 12/$60 – 12 months of the Music & Entertainment Plan for$5/month
Motor 2B
- Built-in Bluetooth® (Version 5.0)
- Includes Bluetooth® microphone for hands-free calls
- Made for iPod®/iPhone®
- AM/FM RDS tuner with 30 presets
- Selectable tuner frequencies USA/EUR/AUS/JAP/RUS
- USB port for flash drives and other devices
- 2.1-amp device charging via USB
- Built-in 300-watt (peak power) Mosfet amplifier
- 25 watts RMS x 4 channels – TrueRating™
- Dual RCA pre-outs for external amplifiers
- Dedicated subwoofer output
- 32,000 color display
- Non-volatile memory
- 1-Year Warranty
- Assembly is required
Motor 1B
- Built-in Bluetooth® (Version 5.0)
- Includes Bluetooth® microphone for hands-free calls
- AM/FM RDS tuner with 30 presets
- Selectable tuner frequencies USA/EUR/AUS/JAP/RUS
- Auxiliary input for portable devices
- Built-in 275-watt (peak power) Mosfet amplifier
- 18 watts RMS x 4 channels – TrueRating™
- Non-volatile memory
- 1-Year Warranty
- Assembly is required
Retro Manufacturing radios are a modular design. Assembly is required. This design allows for a more adjustable fit and to offer different style options. RetroSound Radios are only compatible with 12V negative grounding vehicles.
Note: Bezels, knobs, faceplates, and replacement parts are non-returnable. Please refer to product packaging for the most up to date country of origin. If you are not sure as to fitment, please contact us.

Motor 1B | Motor 2B | Motor 4HD | |
FM | |||
---|---|---|---|
Tuning Range (USA, EUR, AUS, JAP, RUS tuning capable) with RDS | 87.5-107.9MHz | 87.5-107.9MHz | 87.5-107.9MHz |
Antenna Terminal | External Antenna Connector | External Antenna Connector | External Antenna Connector |
Usable Sensitivity | 12.5 dBf | 12.5 dBf | 12.5 dBf |
Selectivity | 75 dB @ 400kHz | 75 dB @ 400kHz | 75 dB @ 400kHz |
Signal to Noise Ratio | 62 dB (Stereo), 67 dB (mono) | 62 dB (Stereo), 67 dB (mono) | 62 dB (Stereo), 67 dB (mono) |
Harmonic Distortion @ 1 kHz | 0.8% (stereo), 0.5% (mono) | 0.8% (stereo), 0.5% (mono) | 0.8% (stereo), 0.5% (mono) |
Separation | 32 dB @ 1kHz | 32 dB @ 1kHz | 32 dB @ 1kHz |
Frequency Response | 30-16,000 Hz | 30-16,000 Hz | 30-16,000 Hz |
AM (EU and US Tuning Capable) | |||
Tuning Range (USA, EUR, AUS, JAP, RUS tuning capable) | 530-1710 kHz | 530-1710 kHz | 530-1710 kHz |
Antenna Terminal | External Antenna Connector | External Antenna Connector | External Antenna Connector |
General | |||
Dimensions (radio face & push-buttons only) | 3.5”W x 1.5” H x 1.05” D | - | - |
Dimensions (radio body) | 3.96”W x 1.98”H x 4.30”D | 3.96”W x 1.98”H x 4.30”D | 3.96”W x 1.98”H x 4.30”D |
Power Requirements | 11.5-14.4 volts | 10.5-14.4 volts | 10.5-14.4 volts |
Current Consumption (during operation) | Max. 15A | Max. 15A | Max. 15A |
Current Consumption (car off) | |||
Output Power (@ 14.4 volts @ 4 ohm @ 1% THD) | 18x4 watts RMS 40x4 Max Power | 25x4 watts RMS 45x4 watts Max Power | 25x4 watts RMS 45x4 watts Max Power |
Output Impedance | 4-8ohm | 4-8ohm | 4ohm |
AUX 1 Input (AUX cable length, 8”) | >300 mV / 6 kΩ | >300 mV / 6 kΩ | >300 mV / 6 kΩ |
AUX 2 Input (aux cable length, 8”) | - | >300 mV / 6 kΩ | >300 mV / 6 kΩ |
USB 1 Input (USB cable length, 16”) | - | 5V (USB female input) | 5V (USB female input) |
USB 2 Input | - | - | 5V (USB female input) |
Low Level Output (4 channels) | - | 2.85 volts | 2.85 volts |
EROM | - | Non-Volatile Memory | Non-Volatile Memory |