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Hertz  |  SKU: SP4.900-A2B-Plug-n-Play

Hertz Premium SP4.900-A2B8 Plug & Play Amp For Harley Davidson® 2024-Up Base Model Street Glide & Road Glide / 2023.5-Up CVO Street Glide & Road Glide Motorcycles

$000 USD
Taxes, discounts and shipping calculated at checkout.


What Makes This System Exceptional?

  • Weather-Resistant Components: The amplifier is compact and IP64 rated, ensuring durability in all weather conditions.

Package Includes:

  • Pre-Wired Amplifier: Gains and filters are adjusted perfectly for your factory Skyline OS Infotainment radio.
  • Volunteer Audio HD-A2B8 Interface: Seamlessly integrates with your Harley Davidson.

Why Choose Volunteer Audio?

  • Pre-Configured Kit: We complete all the prep work, setting gains and filters so you don’t have to. The kit arrives as close to finished as possible, making installation straightforward.
  • Easy Installation: Includes mounting hardware and clear step-by-step videos. You only need to mount the amplifier, connect the wiring to under the seat and battery.
  • Lifetime Tech Support: We offer lifetime support for any items purchased from us, ensuring you get the help you need.

HD-A2B8 Amplifier Replacement Interface

Compatibility:

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

Purpose:

  • Allows the removal of the stock amplifier.
  • Facilitates the installation of a higher power amplifier.
  • 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.

Integration Features:

  • Utilizes the same OE A2B chip for seamless integration.
  • Supports factory infotainment updates.
  • Retains factory features including:
    • Fader
    • EQ selections with DSP profile adjustments
    • Speed-controlled volume
    • Navigation prompts

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 Specs:

  • 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

Hertz SP4.900 Amplifier

Our friends at Hertz have released a game changer for motorcycle audio! The Hertz SP4.900 amplifier offers a small footprint but huge output. It’s the most powerful amp available in its size, delivering 160W RMS @ 4Ω and 250W RMS @ 2Ω. With a remarkably low distortion rate of 0.02% THD, it’s the perfect choice for your motorcycle audio system.

Technical Specs:

  • Output Nominal Power (RMS) @ 14.4 VDC, THD 1%:
    • 4 Ch:
      • 160 W x 4 (4Ω)
      • 250 W x 4 (2Ω)
    • 3 Ch:
      • 160 W x 2 (4Ω) + 500 W x 1 (4Ω)
      • 250 W x 2 (2Ω) + 500 W x 1 (4Ω)
    • 2 Ch:
      • 500 W x 2 (4Ω)
    • Total Power RMS: 1000 W
  • Dyno Specs:
    • Box rating: 160 watts at 4Ω, Dyno reads 173 watts at 4Ω
    • Box rating: 250 watts at 2Ω, Dyno reads 288 watts at 2Ω