Quadraphonic 4-channel Amplifier by RetroSound
Quadraphonic 4-channel Amplifier by RetroSound
Quadraphonic 4-channel Amplifier by RetroSound

Quadraphonic 4-channel Amplifier by RetroSound

Regular price$219.99


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)

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Installation services for most products are available through our partner shop, DVF Customs, in Van Nuys, CA (schedule permitting). Use the form below to inquire about pricing and availability.

Please include the Year, Make and Model of your vehicle when contacting us about parts or service.

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- Shipping available to the lower 48 states only by default

- If you live in a different region and would like to purchase from us please contact us prior to order so we can research shipping charges to your location

- Pickup from our shop in Van Nuys is only available for some custom fabrication parts, as indicated on Individual product pages


Returns: Ordered Incorrectly or Return for Credit

- Returned products are required to be in brand-new condition and include the original undamaged manufacturer's packaging with all packaging materials, including packing inserts, plastic bags please include the original receipt with the product

- Upon contacting us customers shall receive a UPS Return label

- Ship the items back to us within seven (7) days of receiving your label

- Your refund will be processed within 3-4 days after the item has been received and inspected at our facility

- Refunds will be made by crediting the original method of payment

- All items are subject to a minimum 15% restocking fee

- Return Shipping is paid for by the customer

- Scout od Die does not issue credit on any made to order materials/products

- Custom orders and/or special items are not eligible for return and/or exchange

- All sales are final on: Clearance, Blowout Sale, Special Deals, or any items categorized under these descriptions

Returns: Defective or Blemished

- Returns accepted within 90 days of purchase date

- We pay for return shipping

- Parts will be Exchanged for New

Product Disclaimer:

Because of their intended usage, the manufacturer makes no warranties whatsoever, express or implied, oral or written, to purchasers of their products regarding performance, safety, fit, merchantability, or length of service. Purchasers are responsible for selection of proper goods and must rely on their own skill or judgement that such goods are suitable for purchasers’ application.

Fitment Notes:

Many of the parts and products featured on our website are used for modifying and upgrading vehicles. As a result we cannot guarantee fitment on your specific vehicle since custom fabrication and modifications can create unique fitment challenges. Reference your service manual and work with your mechanic/shop to determine approriate fitment before purchasing products.