2024-Present Harley Amplifiers
Amplifiers for 2024-Present Harley-Davidson Street Glide and Road Glide. Shop SounDigital XP, Cicada FLX 4-channel and mono amplifiers, plus the Volunteer Audio HD-A2B8 interface for the factory A2B system.THE REFERENCE STANDARD
Amplifiers for 2024-Present Harley Touring
Powersports amplifiers that suit the 2024-Present bagger, from 4-channel to mono subwoofer power.
- SounDigital 400.4, 800.4, 1600.1 and 3000.1 XP
- Cicada FLX700.4 to FLX2000.4 four-channel
- Cicada FLX1600.1 and FLX2500.1 mono
- Volunteer Audio HD-A2B8 interface
Browse Collections
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SaleHertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier
Vendor:HertzHertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier The Hertz SP 1.900 puts 1000 watts RMS on a single channel in a compact, fanless, IP55 sealed aluminum chassis. It is a dedicated bass amplifier: low-pass from 50Hz to 250Hz, a 25Hz subsonic filter, bass boost and phase control, with sealed power, input and speaker connections. Hertz Motorcycle AudioMotorcycle AmplifiersMotorcycle Subwoofers Hertz Mono Motorcycle Amplifier1000W RMS Mono Power, Stable to 1 Ohm Built for subwoofers and dedicated bass in bagger, powersports and boat systems. 1000W RMS x 1 at 2Ω and at 1Ω (14.4V) 600W RMS x 1 at 4Ω (14.4V) IP55 sealed, fanless aluminum chassis Start a Build ConsultationCall 864-334-6131 Key Product Details Product Hertz SPL Show SP 1.900 1000W Mono Motorcycle Amplifier Amplifier Type Single-channel (mono) Class D amplifier, Hertz ADC output stage Best For Subwoofers and dedicated bass in bagger, powersports and marine audio systems System Goal Real bass output in an open-air system without a large amplifier Speaker Support 4Ω, 2Ω or 1Ω loads (1Ω minimum) Inputs Pre-in (RCA) and speaker-level inputs, with USS for head units that need a speaker load Install Focus Compact sealed chassis for tight motorcycle, powersports and boat mounting locations Always verify subwoofer impedance, wiring, fuse size, amplifier placement, gain setting and charging system capacity before ordering or installing this amplifier.Bass Power That Survives Outside Subwoofers on a bike or boat need real current and an amplifier that will not choke on water and road grime. The SP 1.900 runs a fanless aluminum chassis rated IP55 with sealed power, input and speaker connections, so there is no fan pulling dirt across the board. With 1000 watts RMS available at 2 ohms and 1 ohm, a subsonic filter at 25Hz and an adjustable low pass, it gives you the control to keep a sub clean and loud instead of just loud.Power and Performance Specifications RMS Power @ 4Ω 600 watts x 1 at 14.4V, 1% THD RMS Power @ 2Ω 1000 watts x 1 at 14.4V, 1% THD RMS Power @ 1Ω 1000 watts x 1 at 14.4V, 1% THD Total RMS Power 1000 watts Minimum Load 1Ω Amplifier Class D (Hertz ADC), up to 87% efficiency THD Under 0.1% (100Hz, 4Ω, 70% rated power) Bandwidth 10Hz–500Hz Signal-to-Noise Ratio 95 dBA Damping Factor Over 300 Controls, Inputs and Electrical Low-Pass Filter 50Hz–250Hz adjustable Subsonic Filter 25Hz, 24 dB/octave Bass Boost 0–8 dB (low pass on only) Phase 0–180° Pre-In Sensitivity 0.6–6 VRMS Speaker-In Sensitivity 2.2–22 VRMS Turn-On Remote in (6–15 VDC) or ART auto turn-on from speaker-level input (3.5–7 VDC, selectable) Power Supply Voltage 11–15 VDC (operating 6–16 VDC) Current Draw 50A at 14.4V, 2Ω, max musical power; idle 1.1A Protection IP55 Operating Temperature 0°C to 55°C Dimensions 211.6 x 130 x 49 mm (8.3 x 5.1 x 1.9 in) Weight 2.15 kg Recommended System Planning The SP 1.900 only performs if the power side is right. Plan OFC power and ground wire sized for a 50A draw, a fuse at the battery, a solid ground, a clean signal feed and a subwoofer load that matches the amp (4Ω, 2Ω or 1Ω). Set the low pass, subsonic and gain with the sub installed, not on the bench. If you are unsure how the SP 1.900 fits your Road Glide, Street Glide, Road King, Indian, boat or custom build, contact Garage Bagger Stereo before ordering.What to Pair With the SP 1.900 Parts that get a mono amp wired and tuned correctly. Hertz MPS 250 S2 10" Shallow Subwoofer Hertz Mille PRO 10-inch 2-ohm shallow sub. 1998-Present Harley Power Kits Power and ground wiring for amplifier installs. Motorcycle Amplifier Installation Parts Fusing, distribution, RCA and mounting parts. Motorcycle DSP Crossover and tuning control for the whole system. Related Hertz & Motorcycle Audio Paths Match the SP 1.900 with the right sub, wiring and tuning parts. Shop Hertz motorcycle audio amplifiers, speakers and DSP Shop motorcycle amplifiers for Harley bagger audio systems Shop motorcycle subwoofers Shop 10-inch motorcycle subwoofers Shop motorcycle amplifier installation parts Best Use for the SP 1.900 Choose it to power a subwoofer or dedicated bass section where space is tight and the amp will see weather, dirt and heat. Designed Around Real Motorcycle Audio Wind noise, road speed, limited mounting space and electrical load all matter on a bike. This amp belongs in systems where the sub, wiring, fusing and tuning are planned together. Hertz SP 1.900 FAQ How much power does the SP 1.900 make? Hertz rates it at 600 watts RMS x 1 at 4Ω, 1000 watts RMS x 1 at 2Ω and 1000 watts RMS x 1 at 1Ω, at 14.4V and 1% THD. What speaker loads can it run? It is stable down to 1Ω, so it can drive 4Ω, 2Ω or 1Ω subwoofer loads. Is the SP 1.900 plug and play? No. It is a mono bass amplifier that needs its own power, ground, fuse, signal and speaker wiring. How much current does it draw? Hertz lists 50A at 14.4V into 2Ω at max musical power and 1.1A at idle. Size the power wire, fuse and charging system for that. What filters does it have? An adjustable 50Hz–250Hz low pass, a 25Hz subsonic filter at 24 dB/octave, 0–8 dB bass boost (low pass on only) and 0–180° phase. Does Garage Bagger Stereo install the SP 1.900? Garage Bagger Stereo installs motorcycle audio at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131.Need Help Choosing? Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order. Call 864-334-6131Start a Build ConsultationSale -
SaleHertz SPL Show SP 4.500 600W 4-Channel Motorcycle Amplifier
Vendor:HertzHertz SPL Show SP 4.500 600W 4-Channel Motorcycle Amplifier The Hertz SP 4.500 is a sealed 4-channel amplifier for riders who want real power on fairing and saddlebag speakers without a big box. It accepts RCA or speaker-level input, has USS for head units that need to see a speaker load, and runs 4, 3 or 2 channel configurations. Hertz Motorcycle AudioMotorcycle AmplifiersMotorcycle Speakers Hertz 4-Channel Motorcycle Amplifier600W RMS Total in a Sealed IP55 Chassis Built for fairing and lid speakers that need clean power from a small, sealed amplifier. 150W RMS x 4 at 2Ω (14.4V) 300W RMS x 2 bridged at 4Ω (14.4V) HP / LP / Full crossovers, 50Hz–5kHz Start a Build ConsultationCall 864-334-6131 Key Product Details Product Hertz SPL Show SP 4.500 600W 4-Channel Motorcycle Amplifier Amplifier Type 4-channel Class D amplifier, Hertz ADC output stage Best For Fairing speakers, saddlebag lid speakers and midrange pairs in bagger, powersports and marine systems System Goal More clean power on four speakers from a small, sealed amplifier Speaker Support 2Ω minimum in 4-channel mode; 4Ω minimum bridged Inputs Pre-in (RCA) and speaker-level inputs, USS load simulation Install Focus Compact sealed chassis for tight bagger, powersports and boat mounting locations Always verify speaker impedance, wiring layout, fuse size, amplifier placement, gain structure and charging system capacity before ordering or installing this amplifier.Four Channels Built for Outside Fairing and lid speakers on a bagger have to fight wind and engine noise. The SP 4.500 gives you 150 watts RMS per channel at 2 ohms in a chassis rated IP55, with no cooling fan and sealed power, input and speaker connections. Each channel pair gets its own crossover (full, high pass or low pass, 50Hz to 5kHz) so you can high-pass the fairing speakers and set the rear pair independently, or run it in 3-channel or bridged 2-channel modes.Power and Performance Specifications RMS Power @ 4Ω 90 watts x 4 at 14.4V, 1% THD RMS Power @ 2Ω 150 watts x 4 at 14.4V, 1% THD Bridged Power @ 4Ω 300 watts x 2 at 14.4V, 1% THD 3-Channel @ 4Ω 80 watts x 2 (4Ω) + 330 watts x 1 (4Ω) 3-Channel @ 2Ω 145 watts x 2 (2Ω) + 300 watts x 1 (4Ω) Total RMS Power 600 watts Amplifier Class D (Hertz ADC), up to 87% efficiency THD Under 0.02% (100Hz, 4Ω, 70% rated power) Bandwidth 10Hz–35kHz Signal-to-Noise Ratio 100 dBA Damping Factor Over 150 Controls, Inputs and Electrical Crossover Ch 1-2 Full / High Pass / Low Pass, 50Hz–5kHz, 12 dB/octave Crossover Ch 3-4 Full / High Pass / Low Pass, 50Hz–5kHz, 12 dB/octave Bass Boost 45Hz, 0–8 dB on outputs 3-4 (low pass on only) Pre-In Sensitivity 0.6–6 VRMS Speaker-In Sensitivity 2.2–22 VRMS Turn-On Remote in (6–15 VDC) or ART auto turn-on from speaker-level input (3.5–7 VDC, selectable) Power Supply Voltage 11–15 VDC (operating 6–16 VDC) Current Draw 27A at 14.4V, 2Ω, max musical power; idle 0.9A Protection IP55 Operating Temperature 0°C to 55°C Dimensions 192.7 x 130 x 49 mm (7.58 x 5.1 x 1.9 in) Weight 1.9 kg Recommended System Planning Match the SP 4.500 to the speakers first: 2Ω or 4Ω speakers per channel in 4-channel mode, 4Ω when bridged. Run OFC power and ground sized for a 27A draw, fuse at the battery, feed it a clean RCA or speaker-level signal and set the gains with the bike running. If you are unsure whether the SP 4.500 is the right amplifier for your Road Glide, Street Glide, Road King, Indian or custom bagger, contact Garage Bagger Stereo before ordering.What to Pair With the SP 4.500 Speakers and parts that get the most from this amp. Hertz SPL Show SX 165 NEO Coaxial Hertz 6.5-inch NEO coaxial for fairing and Tour-Pak locations. Hertz SPL Show SX 690 H 6x9 3-Way (Pair) Hertz 6x9 for saddlebag lids. Hertz S8 DSP Hertz DSP for time alignment and EQ. Motorcycle Amplifier Installation Parts Power, ground, fusing and RCA parts. Related Hertz & Motorcycle Audio Paths Build the system around the right amplifier, speakers, DSP and wiring. Shop Hertz motorcycle audio amplifiers, speakers and DSP Shop motorcycle amplifiers for Harley bagger audio systems Compare the Hertz SP 4.900 4-channel motorcycle amplifier Shop motorcycle DSP for Harley-Davidson audio tuning Shop motorcycle amplifier installation parts Best Use for the SP 4.500 Choose it to power four fairing and lid speakers, or a speaker pair plus a bridged channel, when space is tight and the amp will see weather. Designed Around Real Motorcycle Audio Wind noise, road speed, speaker placement, electrical load and limited mounting space all matter. This amp belongs in systems where the speakers, wiring, fusing and tuning are matched. Hertz SP 4.500 FAQ How much power does the SP 4.500 produce? At 14.4V and 1% THD Hertz rates it at 90 watts RMS x 4 at 4Ω, 150 watts RMS x 4 at 2Ω, or 300 watts RMS x 2 bridged at 4Ω, for 600 watts RMS total. Can it run in 3-channel mode? Yes. Hertz rates 80 watts x 2 (4Ω) plus 330 watts x 1 (4Ω), or 145 watts x 2 (2Ω) plus 300 watts x 1 (4Ω). Will it work with a factory radio? It has speaker-level inputs (2.2–22 VRMS), USS for head units that need a speaker load, and ART auto turn-on from the speaker signal. How much current does it draw? Hertz lists 27A at 14.4V into 2Ω at max musical power and 0.9A at idle. Is it weatherproof? The aluminum chassis is rated IP55 with sealed power, input and speaker connections and no cooling fan. Does Garage Bagger Stereo install the SP 4.500? Garage Bagger Stereo installs motorcycle audio at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131.Need Help Choosing? Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order. Call 864-334-6131Start a Build ConsultationSale -
SaleHertz Audio 1000W SP4.900 Advanced Motorcycle Class D Amplifier
Vendor:HertzThe Hertz SP 4.900 is a compact four-channel Class D amplifier from Hertz, built for powersports use and sold here for motorcycle audio. It uses the Hertz ADC (Advanced D-Class) output stage.Key Specs 160 W RMS x 4 at 4 ohm, or 500 W RMS x 2 at 4 ohm bridged Size 211.6 x 130 mm (8.3 x 5.1 in) Up to 85% efficiency IP55-certified aluminum chassis with no cooling fan Built-in Universal Speakers Simulator (USS) on the high-level inputs Automatic turn-on by remote-in or DC offset sensing on the speaker inputs High-pass and low-pass filters, 50 Hz-5 kHz at 12 dB/oct; bass boost 0-8 dB Fitment and Installation NotesThe USS lets the amp work with OEM head units that mute or shut down on speaker-load detection.Browse more amplifiers and Hertz, or ask about a custom build.Not sure what fits your bike? Start a build consultation or call 864-334-6131.Sale
2024-Present Harley Amplifiers at a Glance
| Fitment | 2024-Present Harley-Davidson Touring and CVO |
| Four-channel | SounDigital 400.4 XP, 800.4 XP; Cicada FLX700.4, FLX1000.4, FLX1400.4, FLX1400.4P, FLX2000.4 |
| Mono | SounDigital 1600.1 XP, 3000.1 XP; Cicada FLX1600.1, FLX2500.1 |
| Interface | Volunteer Audio HD-A2B8 10-channel A2B amplifier replacement interface |
Summarized from the products in this collection. Confirm power and fitment on each product page before ordering.
Amplifiers for 2024-Present Harley-Davidson Touring and CVO
An amplifier is the biggest upgrade over the factory system. For speakers, the SounDigital 400.4 XP and 800.4 XP are strong four-channel picks, and Cicada offers the FLX700.4, FLX1000.4, FLX1400.4 and FLX2000.4. For a subwoofer, step up to the SounDigital 1600.1 XP, Cicada FLX1600.1 or FLX2500.1. Keeping the factory radio? The Volunteer Audio HD-A2B8 interface ties a new amplifier into the A2B system.
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Complete the install.
- 2024-Present Installation Parts – Harnesses and racks
- 2024-Present Plug and Play Kits – Complete systems
- 2024-Present 6.5 Speakers – Fairing speakers
- All Motorcycle Amplifiers – Every bike
2024-Present Harley Amplifiers: Power Ratings and A2B Interfaces
The SounDigital 400.4 XP delivers 4 x 66 W RMS at 4 ohm in a 4.7 x 4.4 x 2.0 in chassis, while the 800.4 XP delivers 4 x 132 W RMS at 4 ohm. The Cicada FLX700.4 offers up to 175 watts x 4 at 2 ohm, and the FLX2000.4 up to 542 watts RMS per channel at 2 ohm. For bass, the 2 ohm version of the SounDigital 1600.1 XP is rated 1600 W RMS and the 2 ohm 3000.1 XP is rated 3000 W RMS.
A2B Interfaces and Amp Racks
To keep the factory head unit, the Volunteer Audio HD-A2B8 provides eight 4V RMS analog RCA outputs plus two digital A2B outputs, and the NAV-TV ZEN-H is an A2B 8-channel processor with 8 x 5V RMS RCA outputs. The Curly's Street Glide amp rack bolts on with no cutting, while the Road Glide rack requires modifying the stock amp tray and headlight. See the installation parts to finish the build.
Need Help Choosing 2024-Present Harley Amplifiers?
Tell us your bike, year and goals and a Garage Bagger Stereo specialist will help you pick the right parts and plan the install.