Velocity Premium A2B Stage 6 Plug & Play Amp And Speaker Package For 2026 Harley Davidson® Street Glide Limited Motorcycles

Tired of struggling to hear your factory Harley speakers at highway speeds? Or constantly replacing blown speakers? You’re not alone!

At Volunteer Audio, we understand these common frustrations, and we’ve created a solution that will revolutionize your riding experience. Our Velocity Razor Stage 6 amplifier and speaker system delivers the output, clarity, and midbass needed to keep your music sounding incredible even at highway speeds.

Why Choose the Volunteer Audio Stage 6 System?

• Exceptional Sound Clarity: The Velocity Razor system delivers powerful, clear audio with excellent vocal detail, crisp highs, and strong midbass so you can enjoy your music even at highway speeds.
• Easy Upgrade: Keep your factory radio while dramatically improving your sound system. Our prewired Velocity Razor Pro amplifier is configured for optimal performance with your factory Skyline OS Infotainment radio.
• Complete Front & Rear Sound: With Velocity Razor Coax Neo speakers in the upper fairing, Tour Pack, and saddlebag lids, the Stage 6 system creates a fuller, more immersive listening experience for both rider and passenger.
• Durability: The compact Velocity Razor Pro amplifier is designed for demanding motorcycle audio applications, while the Velocity Razor Coax Neo speakers are built to deliver reliable, high-output performance in motorcycle environments.

What’s Included in the Stage 6 Package?

• Prewired Velocity Razor Pro RZP2000.6 Amplifier: Gains and filters are professionally adjusted specifically for your factory Skyline OS Infotainment radio.
• Volunteer Audio HD-A2B8 Interface: Seamlessly integrates with your Harley-Davidson®, expertly tuned for Velocity Razor systems.
• Velocity Razor Power/Ground Harness: Ensures clean, reliable power and grounding for optimal amplifier performance.
• 1 Pair of Velocity Razor Coax Neo RCN65 6.5” Upper Fairing Speakers: High-output neodymium coaxial speakers designed to deliver crystal-clear vocals, detailed highs, and powerful midbass at highway speeds.
• 1 Pair of Velocity Razor Coax Neo RCN65 6.5” Tour Pack Speakers: Matching high-output neodymium coaxial speakers that provide seamless tonal balance and outstanding rear fill for both rider and passenger.
• 1 Pair of Velocity Razor Coax Neo RCN69 6x9” Saddlebag Lid Speakers: Premium high-output neodymium coaxial speakers engineered to provide exceptional midbass, outstanding clarity, and the output needed to keep your music loud and clean on every ride.
• 1 Pair of Volunteer Audio IP-24-LIDKIT-V 6x9” Saddlebag Speaker Cut Kits: Precision-engineered cut kits for installing the Velocity Razor Coax Neo RCN69 speakers into 2024+ Harley-Davidson® factory non-speaker saddlebag lids. Includes templates, black grilles, and mounting hardware. These cut kits are designed for factory lids that do not already have factory speaker provisions.
• Metra BC-9721 Harness Splitter: Simplifies installation and provides a clean, secure quick-disconnect connection for your rear speakers.

Why Volunteer Audio?

• Pre-Configured Convenience: We do all the hard work for you. Your kit arrives with gains and filters already set, making installation straightforward.
• Step-by-Step Support: Our detailed videos guide you through the installation process from start to finish.
• Lifetime Tech Support: We offer lifetime support for any items purchased from us, ensuring you have assistance whenever needed.

---

HD-A2B8 Amplifier Replacement Interface

Compatibility:

• Designed for Harley-Davidson models equipped with the Skyline OS Infotainment Unit.

⸻

Purpose:

• Allows for the removal of the stock amplifier.

• Facilitates the installation of higher power aftermarket amplifiers.

• Maintains compatibility with factory-installed Rockford Fosgate subwoofers and rear-mounted secondary amplifiers.

⸻

Manufacturer:

• Designed and manufactured by SeirenHD exclusively for Volunteer Audio.

• Engineered and manufactured in the USA.

⸻

Pre-Tuned for Plug-and-Play Performance

The HD-A2B8 interface from Volunteer Audio and SeirenHD is ready to install right out of the box—no tuning required for standard systems.

Already optimized for immediate use:

• Flat EQ Curve – Delivers a clean, uncolored audio signal

• Pre-Set Output Levels – Optimized to run clean at full volume with zero clipping

• Speed-Controlled Volume – Fully retained and pre-configured to match factory behavior

• Fader Support – Works immediately without any setup

• All Factory Features Intact – Including navigation prompts, radio EQ selections, and more

Tuning is optional, only necessary when:

• Activating crossovers

• Using the 31-band or 10-band EQ to customize for specific speaker setups

• Adjusting time alignment or per-channel output levels

⸻

Plug-and-Play Harnessing

The HD-A2B8 includes a harness that connects directly to all factory speaker wiring with zero modification to your motorcycle.

For expanded setups, additional plug-and-play harnessing is available below:

• Underseat Harness – Pins into the factory plug on base model bikes

• Lid Disconnect Harness – Clean, quick-disconnect solution for 6x9 lid speaker installations

• Tour Pack Harness – Adds plug-and-play rear audio for Tour Pack installations

• Lower Fairing Harness – Simple solution for adding speaker pods to your lower fairings

All harnessing options are pre-configured and labeled for quick installation and available for purchase below.

⸻

Integration Features:

• Utilizes the OE A2B chip for seamless factory integration

• Supports all factory infotainment updates

• Retains full factory functionality, including:

 • Fader

 • EQ selections with DSP profile adjustments

 • Speed-controlled volume

 • Navigation prompts

 • Digital A2B subwoofer output for HD Audio by Rockford systems

⸻

DSP Specifications:

• 10 Output Channels with Full DSP Control:

 • 8 Analog RCA Outputs

 • 2 Digital A2B Outputs (for Rockford subwoofers)

• Equalization:

 • Per-channel 31-band graphic EQ or 10-band parametric EQ

 • Global 7-band parametric EQ mirrors infotainment custom EQ settings

• Time Alignment:

 • Independent delay settings for every channel

• Crossover Control:

 • Independent high-pass and low-pass filters per output pair

• Level Adjustment:

 • Individual channel-level control for precise tuning

⸻

Technical Specifications:

• RCA Outputs:

 • 8 Channels, 4v RMS

 • Front, Rear, Subwoofer, and Auxiliary output configuration

• Frequency Response: 20 Hz – 24 kHz

• Signal-to-Noise Ratio: 112 dB

• DSP Resolution: 32-bit

• Operating Voltage: 6–28 volts

• Current Draw:

 • Idle: 14 µA

 • Full Power: 300 mA

• Warranty: 1 Year

---

Ready to Elevate Your Ride?

At Volunteer Audio, we’re committed to providing you with an amazing sound system for your Harley-Davidson®. Our Velocity Razor Stage 6 package combines the Velocity Razor Pro amplifier with RCN65 and RCN69 Coax Neo speakers to create a complete front-to-rear audio upgrade.

With premium sound from the upper fairing, Tour Pack, and saddlebag lids, you’ll experience incredible volume, exceptional clarity, powerful midbass, and immersive sound for both rider and passenger.

Ready for a sound transformation? Let us help you get there!