







RetroSound Monza Motor 4 DAB FM Bluetooth Classic Car Stereo
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The RetroSound Monza Motor 4 (MNZ-M4) is an all-black, classic-style single DIN DAB+ car stereo with Bluetooth 5.0, a 25W RMS x 4 MOSFET amplifier, and two USB ports, from RetroSound's DIN Solutions lineup.
Key specifications
- Model: MNZ-M4 (Monza face, Motor 4)
- Tuner: DAB/DAB+ plus AM/FM RDS with 30 presets
- Bluetooth: version 5.0, microphone included
- Amplifier: 25W RMS x 4, 300W peak MOSFET
- USB: two rear-mounted ports with 2.1A charging
- Outputs: dual RCA pre-outs and dedicated subwoofer output
- Display: adjustable 32,000-colour
- Fit: factory single DIN openings
- Warranty: 2 years
RetroSound Radio Monza MNZ-M4
The Monza radio face brings understated European styling to the RetroSound DIN Solutions lineup, designed for classic vehicles with factory single DIN openings. Inspired by the driver-focused dashboards of vintage BMW, Jaguar, Mercedes-Benz and MGB interiors, it delivers a period-correct appearance with modern audio capability. Its fully blacked-out face, low-profile push-buttons and minimalist layout blend naturally into classic interiors. Two knob styles are included so you can tailor the look to suit your vehicle.
The Motor 4 is RetroSound's top-specification unit, adding a built-in DAB/DAB+ tuner to the AM/FM RDS tuner (30 presets), built-in Bluetooth 5.0 for hands-free calling and audio streaming, made-for-iPod/iPhone functionality, and compatibility with all Android devices. It also features dual RCA pre-outs, a dedicated subwoofer output, and an adjustable 32,000-colour display to match your vehicle's gauges.
- Built-in Bluetooth 5.0, microphone included for hands-free calls
- AM/FM RDS tuner with 30 presets
- Selectable tuner frequencies: USA/EUR/AUS/JAP/RUS
- Two rear-mounted USB ports for flash drives and device charging (2.1A)
- Built-in 300W peak MOSFET amplifier, 25W RMS x 4 channels (TrueRating™)
- Dual RCA pre-outs for external amplifiers
- Dedicated subwoofer output
- Adjustable 32,000-colour display
- Non-volatile memory
- 2-year warranty
- Assembly required
RetroSound radios use a modular design — assembly is required, which allows for a more adjustable fit and a choice of style options. RetroSound radios are only compatible with 12V negative earth vehicles.
Explore the full range in Retro Car Radios.
Specification
| Dimensions | (radio body) 3.96”W x 1.98”H x 4.30”D |
|---|---|
More specs
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What's Included
- Monza Radio Face
- Motor 4
- Mounting Brackets
- Bolts, Screws & Washers
- Backstrap
- Microphone
- Main Wiring Harness
- Speaker Harness
- Power Harness
- Large Plastic Spacer
- Cupped Plastic Spacer
RetroSound
About the RetroSound MNZ-M4
From our tech experts at CEN
A classic-style car radio, with modern electronics behind a period face — Bluetooth streaming and hands-free, plus DAB.
Who it suits
Classic and modern classic owners who want to stream music and take calls without a modern screen ruining the dash. These are the answer for cars where an aftermarket double-DIN would look completely wrong, and they usually fit the original aperture and shaft spacing.
Our tech experts advise
Shaft spacing, depth and face style vary between models and cars, and older vehicles often need a 6 to 12 volt converter or a rewire of the aerial and earth. Tell us the car and we will confirm which model suits — get in touch. See car stereo installation.
Explore the full RetroSound range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all RetroSound
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Compare - RetroSound® Radio Motors Feature Sets
Choose a Radio Motor to select the radio features that matter most for your classic vehicle.
Motor 1
- Built-in Bluetooth®
- Power Output 4×18w RMS
- Fixed White Display
- Auxiliary Inputs
- 1 Year Warranty
Motor 1 DAB
- Built-in Bluetooth®
- Built-in DAB/DAB+ Tuner
- Power Output 4×18w RMS
- Fixed White Display
- Auxiliary Inputs
- 1 Year Warranty
Motor 2
- Built-in Bluetooth®
- Power Output 4x25w RMS
- Adjustable Colour display
- 2.1A Charging via USB
- USB Port
- Dual RCA pre-outs
- Dedicated subwoofer output
- 1 Year Warranty
Motor 6
- Built-in Bluetooth®
- Built-in DAB/DAB+ Tuner
- Power Output 4×25w RMS
- Adjustable Colour Display
- Two USB Ports
- 2.1A Charging via USB
- Auxiliary Inputs
- Dual RCA pre-outs
- Dedicated subwoofer output
- 2 Year Warranty
Frequently Asked Questions
Q: Will this stereo fit my car?
A: Most vehicles need a fascia panel, wiring harness and sometimes a steering wheel control interface to fit a new stereo. Contact CEN with your make, model and year and we will confirm the exact installation kit needed, or browse our Connects 2 installation kits.
Q: Will I keep my steering wheel controls?
A: Yes, in almost all cases. A steering wheel control interface retains your existing buttons with the new stereo. Parts are sold separately.
Q: Does this stereo support Apple CarPlay or Android Auto?
A: Check the Specification tab, which lists smartphone connectivity for each model including whether CarPlay and Android Auto are wired or wireless on that unit.
Q: What is the difference between single DIN and double DIN?
A: DIN refers to the chassis size. Single DIN units are the traditional slim format, while double DIN units are twice the height and typically carry a touchscreen. Your vehicle's dash aperture and fascia kit determine which fits.
Q: Can CEN supply and fit the stereo?
A: Yes. CEN offers professional supply and installation from our Nottingham premises, including fascia, wiring and steering control integration. Contact us for a fitted price.
Q: Does the Monza Motor 4 have DAB radio?
A: Yes. The Motor 4 has a built-in DAB/DAB+ tuner as well as an AM/FM RDS tuner with 30 presets.
Q: Which cars is the RetroSound Monza designed for?
A: The Monza face is designed for classic vehicles with factory single DIN openings and is inspired by vintage BMW, Jaguar, Mercedes-Benz and MGB interiors. Contact CEN with your vehicle details to confirm fitment.
Q: How many USB ports does it have?
A: Two rear-mounted USB ports, both with 2.1A device charging.















































