Quadraphonic 4 Channel Amplifier

Quadraphonic 4 Channel Amplifier

Regular price $260.00
Earns 52 entries in the giveaway Free shipping on orders over $75

This item is dropshipped and comes straight from the manufacturer.


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/full-range crossovers 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 7.25" x 3" x 1.75" 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/full range crossover
  • Advanced circuitry and thermal protection
  • Directly connects to your RetroSound radio
  • Works with any aftermarket radio with low-level RCA outputs
  • Optional wiring kit available for aftermarket radios
  • Compact size fits almost anywhere
  • Dimensions: 7.25 in x 3 in x 1.75 in (17.9 cm x 7.1 cm x 4.4 cm)


    All orders are shipped via USPS or UPS with tracking. We offer FREE shipping on all U.S. orders over $75. There is a $4.99 flat rate charge for all other orders. We are only able to ship internationally to Canada at this time. You should expect your order to be fulfilled within 3-5 business days after your order is placed.

    Due to the nature of our giveaways all purchases are non-refundable.

    If you are interested in exchanging an item you may send it back within 7 days of your delivery date. Customers are required to pay for return shipping costs on exchanges. All apparel must be in unworn, unwashed condition. All tools, jerky, detail supplies, stickers, etic. must be in unopened condition.