| Channels | 4 Channel |
| Power | 4x100W RMS |
| Year Range | 1998-2013, 2014-2023, 2024+ |
Mini 4-channel Class-D motorcycle amplifier — 150W × 4 RMS at 2Ω, purpose-built for 1998–2023 Harley-Davidson® Touring
The MAA4.400 is Precision Power's compact 4-channel Class-D amplifier, designed around the tight installation spaces of Harley-Davidson® Touring fairings and saddlebags. At 235mm × 137mm × 48mm (9.25" × 5.375" × 1.875"), it fits where full-size motorcycle amps don't — behind the lower fairing panel, inside a saddlebag, or in the Tour-Pak® — while delivering 150W × 4 RMS at 2Ω from a stable Korean Class-D topology with less than 1% THD+N.
All four channels are independently configurable with high-pass, low-pass or band-pass crossover options, making it practical for two-speaker through four-speaker setups alike. Signal-sensing turn-on removes the need for a dedicated remote wire on factory-wired Harleys, and an RCA pass-through output lets you feed a second amplifier from the same source — useful for systems expanding into a subwoofer or rear stage.
- 150W × 4 RMS at 2Ω: Full headroom for 2Ω-capable speakers in fairing environments where bass management handles the heavy lifting — clean output at sustained riding volume.
- 100W × 4 RMS at 4Ω: Matched to standard 4Ω Harley-compatible speakers — plenty of power without thermal stress on the amplifier.
- 235mm compact footprint: Slides into fairing cavities, under-seat locations, and Tour-Pak® spaces that full-size amps cannot access.
- Signal-sensing turn-on: Detects speaker-level input and powers on automatically — no remote wire required on stock-wired Touring models.
- 12 dB/oct crossovers: High-pass, low-pass and band-pass options on each channel for flexible staging — front fairing on HP, bag lids on LP or BP.
- RCA daisy-chain output: Pass-through RCA lets you run a second amplifier off the same signal source without splitting inputs at the head unit.
- All controls on one face: Gain, crossover frequency and crossover mode accessible from one side — no reaching around after installation.
Fitment
| Year | Model | Notes |
|---|---|---|
| 1998–2013 | Street Glide® | Fairing, saddlebag or Tour-Pak® install |
| 1998–2013 | Road Glide® | Fairing, saddlebag or Tour-Pak® install |
| 2014–2023 | Street Glide® / Street Glide® Special | Fairing, saddlebag or Tour-Pak® install |
| 2015–2023 | Road Glide® / Road Glide® Special | Fairing, saddlebag or Tour-Pak® install |
| 1998–2023 | Ultra Limited / Electra Glide® Ultra | Fairing, saddlebag or Tour-Pak® install |
| 2009–2023 | Tri Glide® Ultra | Fairing, saddlebag or trunk install |
| 2014–2023 | CVO™ Touring models | Requires rewiring for aftermarket audio use |
Technical Specifications
| Channels | 4 |
| Topology | Class D |
| RMS Power @ 4Ω | 100W × 4 (14.4V, 1kHz, ≤1% THD+N) |
| RMS Power @ 2Ω | 150W × 4 (14.4V, 1kHz, ≤1% THD+N) |
| Total RMS | 600W |
| Input Sensitivity | 200mV – 6V (low-level RCA) |
| Turn-On | Signal sensing (speaker-level) |
| Crossover | 12 dB/oct HP / LP / BP (per channel) |
| RCA Output | Low-level pass-through for daisy-chaining |
| Dimensions | 235mm × 137mm × 48mm (9.25" × 5.375" × 1.875") |
| Country of Origin | South Korea |
| Warranty | 1 year through MAA as authorised dealer |
In the Box
- 1× MAA4.400 amplifier
- RCA input harness
- Power, ground and speaker wiring harnesses
- Mounting hardware
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer's responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We'll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you're unsure about compatibility, reach out before ordering—we're happy to help.