Keep the Stock Amp or Remove It? Two Correct Upgrade Paths for 23.5+ Harley Touring

02/19/26

Keep the Stock Amp or Remove It? Two Correct Upgrade Paths for 23.5+ Harley Touring

On 23.5+ Harley touring bikes (including 2024+ Road Glide and Street Glide), the factory Rockford amp changes the rules. You have two correct upgrade paths depending on your goal: keep the stock amp and add a second amp (fast and effective, but still a processed signal), or remove the stock amp with an A2B module for the best overall sound and system control.

Quick Answer

  • Fastest clean upgrade: keep the stock Rockford amp and add a second amplifier (still a processed signal).
  • Best overall sound: remove the stock amp using an A2B module (best route for sound quality and control).

Why 23.5+ Harley Audio Upgrades Are Different

The 2023.5 CVO models introduced Harley’s newer touring audio architecture. From 2024 to current Road Glide and Street Glide models, that same platform includes a factory Rockford Fosgate amplifier. Because the stock amp shapes the signal, the upgrade path you choose affects tuning, headroom, and overall sound quality.

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

This is the best route when you want a clean plug-and-play style upgrade path and you’re not ready to remove the factory amp yet. You can absolutely make big gains in volume and performance, but you are still working with a processed signal (not a flat curve like you get when the stock amp is removed and an A2B module is installed).

Best for riders who want

  • A quicker upgrade path with minimal disruption
  • More output and improved clarity without fully reworking the system
  • To keep the factory amp in place and expand from there

Important reality

This route is still a processed signal. That’s not “wrong,” it’s just a tradeoff. It’s the correct lane when you want results fast while staying plug-and-play.

Recommended plug-and-play solution

Option B: Remove the Stock Amp + A2B (Best Overall Sound)

If your goal is the best sound quality and the best foundation for a serious audio build, this is the route. Removing the stock amp and using an A2B solution is the best way to get maximum control, cleaner signal behavior, and the strongest overall results.

Best for riders who want

  • The best possible sound quality
  • Maximum tuning control and system flexibility
  • A stronger long-term platform for high-output builds

A2B module options we carry

Which Option Should You Pick?

  • Pick Option A if you want the quickest clean upgrade and you’re okay with the limitations of a processed signal while keeping the stock amp.
  • Pick Option B if you want the best overall sound and the best long-term foundation for a full system build.

FAQ

Can I add an aftermarket amp without an A2B module?

Yes. If you keep the stock amp, you can add a second amplifier using the correct plug-and-play integration. Just understand the signal remains processed.

Why does removing the stock amp sound better?

Because it’s the best route for sound quality and system control. The A2B path provides a stronger foundation for tuning and high-performance builds.

Which A2B module should I choose?

If you want DSP processing included in the integration path, choose one of the DSP options. If you do not need DSP, the non-DSP replacement interface is the straightforward route.

Next Step

Choose your lane first—then build speakers, amplification, and tuning around it. That’s how 23.5+ systems perform at the level they should.

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.

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