Quad 4 compact car amplifier for classic cars

Retrosound Quad 4 compact car amplifier for classic cars. This compact upgrade instantly boosts the power of your system. Easy to install with no additional wiring, it fits neatly behind your head unit.

The RetroSound® compact car amplifier Quad 4 is a full-range Class D (digital) power that plugs directly into any RetroSound® radio. Featuring 45 watts x 4 RMS power, the Quad 4 offers exceptional dynamic range and low distortion for the best possible sound reproduction from your RetroSound® audio system. Low level RCA inputs also allow the Quad 4 to be used with any aftermarket car stereo system. The Quad for has a built-in high pass/full range crossover, and its diminutive size means you can install it virtually anywhere, including behind the dash.

  • 45 watts x 4 channels continuous power output
  • Full range Class D digital circuitry
  • Ultra-low current draw
  • Advanced protection circuitry
  • Built-in variable high pass/full range crossover
  • Direct connection compatibility with all RetroSound® radios
  • Compact size (7 1/4 x 3 x 1 3/4 inches) to fit virtually anywhere.

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Some information about Classic Car Amplifiers

Very small car amplifiers like the Retro sound Quad four are difficult to find, especially with this build quality. Cheap car amplifiers are usually much bulkier and deliver lower power output and clarity.

Car HiFi amplifier from quality manufacturers are usually much more expensive and again are generally too large to fit the Classic Car application. A good in car amp should be a balance of power (measured in Watts), low total harmonic distortion (THD) and affordable, the Retrocarstuff Quad 4 fits this nicely.

When installing your audio amplifier it is important to use a high-quality speaker and power cables and to use the correct fuse rating on the supply line (make sure the fuse is close to the power supply source). If you don’t have much space or don’t want huge amp’s cluttering up your boot this is perfect.