Do You Need an A2B Module on 23.5+ / 2024+ Harley Audio? Here’s the Simple Answer

02/12/26

Do You Need an A2B Module on 23.5+ / 2024+ Harley Audio? Here’s the Simple Answer

Quick Answer

  • Adding an aftermarket amplifier: A2B is NOT required.
  • Removing the stock Rockford amp for best sound: A2B IS required (best route).

The confusion comes from mixing two different upgrade goals. On 23.5+ CVO and 2024+ Road Glide/Street Glide models, you can absolutely add aftermarket amplification while retaining the stock Rockford amp. But if your goal is the best sound quality and the cleanest signal path, removing the stock amp and using an A2B module is the preferred route.

Decision Guide (Pick Your Lane)

Lane A: Keep the Stock Amp + Add a Second Amp

This lane is for riders who want a plug-and-play style upgrade path while keeping the factory Rockford amp in place.

  • You can add an aftermarket amplifier.
  • The signal remains processed (not a flat curve like the A2B route).
  • It’s often the fastest “get louder and cleaner” path with minimal disruption.

Recommended product for this lane:

Lane B: Remove the Stock Amp + A2B (Best Sound Route)

This lane is for riders who want maximum control and the best overall sound quality. Removing the stock amp and using an A2B solution is the route that delivers the cleanest signal path and best system results.

A2B options we carry:

FAQ

Can I get a major improvement without A2B?

Yes—if you keep the stock amp and add a second amp correctly, you can significantly improve output and performance. Just understand you are still working with a processed signal.

What’s the point of removing the stock amp?

Best overall sound quality and system control. The A2B route is the best foundation when the goal is maximum performance.

Which A2B module should I choose?

If you want DSP processing built into the integration path, choose one of the DSP options. If you do not need DSP, the non-DSP interface is the straightforward replacement option.

This Blog Was Reviewed for Accuracy By Audio Expert, Chris Lowe

Chris Lowe, the esteemed owner of Garage Bagger Stereo, is a globally recognized authority in Motorcycle and Boat Audio systems. With a decorated experience spanning over a decade, Chris has curated audio experiences for enthusiasts and businesses worldwide. His expertise and stellar work are prominently showcased across various social media platforms and can be further explored through the offerings on the official Garage Bagger Stereo website.

Originally hailing from South Georgia and currently residing in Greenville, South Carolina, Chris's fervor for boating and motorcycles is deeply rooted. It's this passion, coupled with his affection for car audio, that has seamlessly interwoven his personal interests with his professional pursuits. This synergy has not only invigorated his daily endeavors but also continually fuels his commitment to excellence in the audio industry.

Recommended For You