Product Description
This RetroSound listing is for the RetroSound Quadraphonic 4-channel Amplifier. RetroSound builds modern classic-look radios and audio for vintage vehicles. Choose the options on this page that match the dash and features you want.
Features
- Authorized RetroSound product for classic car and truck installs
- Designed to pair with RetroSound radios and speakers
- Confirm power and mounting space before you order
- Sold through authorized RetroSound dealers
Before You Install
Test-fit the radio or speakers before cutting or drilling. Confirm wiring, antenna, and speaker impedance. We sell the product and related accessories, but we do not offer installation.
About RetroSound
RetroSound focuses on classic-styled car audio. This page is specifically for RetroSound Quadraphonic 4-channel Amplifier. For help matching this listing, call 844-802-4499.
RetroSound Quadraphonic 4-channel Amplifier FAQ
Is this an authorized RetroSound product?
Yes. This listing is staged for RetroSound products sold through an authorized dealer.
Which motor should I choose?
Use the options on this page, or call 844-802-4499 for help.
Quadraphonic 4-channel Amplifier specifications
- 4-channel full-range Class D amplifier
- 45 W RMS × 4 @ 4 Ω; peak 55 W × 4
- THD < 0.2% @ 45 W × 4 RMS
- Frequency response: 28 Hz–28 kHz; S/N > 90 dB (EIA)
- Input sensitivity: 200 mV–6.0 V; dual gain control
- Built-in variable high-pass filters; crossover slope 12 dB/octave; crossover frequency 100 Hz
- Fuse: 15 A ATC
- Dimensions: 7.05″ × 3″ × 1.65″ (17.9 × 7.1 × 4.2 cm)
- Directly connects to a RetroSound radio; also works with aftermarket radios that have low-level RCA outputs
- Optional wiring kit available for aftermarket radios (sold separately)
- Accessories limited warranty: 1 year (Retro Manufacturing chart)
Quadraphonic 4-channel Amplifier — Wiring / install tips
Follow the sheet that ships with the product if it differs from this summary.
- RetroSound radio: use the direct/plug-and-play connection described by Retro Manufacturing.
- Aftermarket radio: use low-level RCA outputs; optional wiring kit available.
- Compact size allows dash/under-dash placement — still provide solid ground and proper fusing (15 A ATC).
- Match gain to the radio’s pre-out level; manufacturer product page lists a Quadraphonic amplifier manual.
Vintage Car Radio does not offer installation.
Quadraphonic 4-channel Amplifier manuals
When Retro Manufacturing publishes a PDF on the product page (speakers manual, amp manual, R-TW84 manual, etc.), use that document for the official diagram.
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers and Accessories are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or call Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
FAQ — Quadraphonic 4-channel Amplifier
Is this a radio head unit?
No — this is a RetroSound speaker, amplifier, or subwoofer accessory. Motor 2 vs Motor 4 comparisons apply only to RetroSound radios.
What impedance / power should I match?
Use the Specs figures from Retro Manufacturing on this page (do not exceed RMS ratings).
Do you install?
No.
Warranty?
1-year Retro Manufacturing coverage for speakers/accessories. See Warranty.
Need help?
844-802-4499 or 574-226-6676.
Specs
Wiring / Tech Tips
Manuals
Warranty
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers and Accessories are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or call Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
