Shop All

RetroSound Quadraphonic 4 Channel Amplifier Full Range Class D Amp 4x45w RMS

£199.99 Highly Rated
1 in stock
SKU: 91538MPN: Quadraphonic

RetroSound® Quadraphonic 4-channel Amplifier

Power your whole system with the RetroSound® Quadraphonic amplifier.

The RetroSound® Quadraphonic amplifier is a plug-and-play solution for adding additional power to your classic car stereo system. The Quadraphonic is a 4-channel amplifier and connects directly to your RetroSound radio delivering 45-watts RMS to all four speakers. Pair it with a RetroSound 8" powered subwoofer for a complete audio system that's a breeze to install. The Quadraphonic amplifier offers an exceptional dynamic range and low distortion with built-in variable high-pass filters for both front and rear channels.

Listen to your favorite 60's rockabilly or 80's pop hits in your classic ride with perfect clarity and experience the music the same way you do in your daily driver. Dual gain control allows you to match the input sensitivity to the output of your RetroSound radio for the best possible audio reproduction in your classic vehicle.

The Quadraphonic is a Class D (digital) amplifier with advanced circuitry and thermal overload protection. The amplifier's ultra-low current draw, advanced shielding, and compact size of just 7.05” x 3” x 1.65” allows installation almost anywhere, even behind the dashboard, where most amps fail due to electrical interference! A perfect solution for classic cars where space is limited.

  • 4-channel amplifier
  • Full-range Class D digital circuitry
  • 45-watts RMS x 4 channels full-range @ 4 ohms
  • Built-in variable high pass filters
  • Advanced circuitry and thermal protection
  • Directly connects to your RetroSound radio
  • Works with any aftermarket radio with low-level RCA outputs
  • Compact size fits almost anywhere
  • Dimensions: 7.05” x 3” x 1.65”(17.9 cm x 7.1 cm x 4.2 cm)
Specification
Frequency Response28Hz-28KHz
Dimensions(inches) 7.05” x 3” x 1.65”
Dimensions(cm) 17.9 cm x 7.1 cm x 4.2 cm
More specs
  • Power Output 45 watts x 4 channels RMS @ 4 Ohms
  • Peak Output 55 watts x 4 channels
  • Total Harmonic Distortion <0.2% @ 45 watts x 4 RMS
  • Signal to Noise Ratio (EIA Rated) >90dB
  • Input Sensitivity 200mV-6.0 volts
  • Crossover Slope 12dB per octave
  • Crossover Frequency 100 Hz
  • Fuse 15 amp ATC Style
What's Included
  • Quadraphonic Amp
  • Screws
FAQs
Q: How do I choose the right amplifier for my speakers or subwoofer?

A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.

Q: What wiring do I need to install this amplifier?

A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.

Q: What class of amplifier is this and does it matter?

A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.

Q: Will an amplifier work with my factory head unit?

A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.

Q: Can CEN install this amplifier?

A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.

About the brand

RetroSound

At RetroSound, we specialize in bringing modern audio technology to your classic vehicles. Our mission is to deliver high-quality, vintage-inspired sound systems that seamlessly integrate with the style and spirit of your car.

With cutting-edge features like Bluetooth connectivity, advanced equalizers, and crystal-clear sound, RetroSound ensures you enjoy modern music capabilities while keeping the retro look and feel intact.

Elevate your driving experience with RetroSound—where classic design meets contemporary sound.

Shop RetroSound

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
Shop Now

Motor 1 DAB

  • Built-in Bluetooth®
  • Built-in DAB/DAB+ Tuner
  • Power Output 4×18w RMS
  • Fixed White Display
  • Auxiliary Inputs
  • 1 Year Warranty
Shop Now

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
Shop Now

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
Shop Now