Cicada Audio FLX1400.4 — 4-Channel Ultra-High-Power Class-D Motorcycle Amplifier (1,400W RMS / Compact Chassis)
Cicada Audio FLX1400.4 — Ultra-High-Power 4-Channel Class-D Amplifier for Extreme Motorcycle Audio Builds
When you need ridiculous power in a tiny package — you choose the FLX1400.4.
The Cicada Audio FLX1400.4 is one of the most powerful compact motorcycle amplifiers available today. Delivering up to 350W × 4 RMS @ 2Ω, this amp is built for riders who demand extreme volume, brutal clarity, and headroom that doesn’t collapse at highway speeds.
Designed specifically for Harley-Davidson and performance touring platforms, the FLX1400.4 packs massive output into an incredibly small chassis that fits inside fairings, side covers, and saddlebag amp trays. Purpose-built for real motorcycle environments, it excels in heat, vibration, water exposure, and long-distance riding conditions.
Key Features
- Huge output from a compact chassis: 350W × 4 @ 2Ω or 700W × 2 bridged @ 4Ω.
- True motorcycle engineering: Stable operation from 8–16V with excellent thermal control.
- High-efficiency Class-D design: Runs cool even in enclosed fairings.
- Flexible crossovers: HPF / FULL / LPF, 30–300 Hz (12 dB/octave).
- Clean, dynamic audio: High damping factor and 91 dB SNR.
- Compact footprint: Ideal for Harley Touring and custom bagger builds.
- REM or DC turn-on: Compatible with Harley Boom!Box and aftermarket head units.
Specifications
| Cicada Audio FLX1400.4 – Technical Specifications | |
|---|---|
| OUTPUT POWER (RMS) | |
| 4Ω Stereo @ 12.5 V | 200W × 4 |
| 4Ω Stereo @ 14.4 V | 226W × 4 |
| 2Ω Stereo @ 12.5 V | 306W × 4 |
| 2Ω Stereo @ 14.4 V | 350W × 4 |
| 4Ω Bridged @ 12.5 V | 612W × 2 |
| 4Ω Bridged @ 14.4 V | 700W × 2 |
| AUDIO PERFORMANCE | |
| Signal-to-Noise Ratio | 91 dB |
| THD | <0.5% |
| Damping Factor | 200 |
| CROSSOVER | |
| Mode | HPF / FULL / LPF |
| Frequency Range | 30 – 300 Hz |
| Slope | 12 dB/octave |
| INPUTS & ELECTRICAL | |
| Gain Range | 0.2 – 12 V AC |
| Turn-On | REM / DC |
| Operating Voltage | 8 – 16 V DC |
| Total Efficiency | 79% |
| PHYSICAL | |
| Dimensions (W × D × H) | 7.6 × 5.4 × 2.0 in (193 × 137 × 51 mm) |
| Weight | 1.45 kg (approx.) |
Why It Works So Well on Motorcycles
- Insane power density: One of the strongest micro-chassis 4-channel amps on the market.
- Maintains clarity at extreme volume: Designed for SPL-style Harley builds.
- Fits real Harley locations: Drops into fairing amp trays without modification.
- Built for the elements: Resists heat, vibration and long-haul abuse.
Fitment
- Ideal for Harley-Davidson Touring models 1998–2024.
- Compatible with Street Glide, Road Glide, Ultra Limited, Electra Glide, CVO, and Tri Glide.
- Mounts cleanly in fairings, side covers or saddlebag amp racks.
- Supports Harley Boom!Box and all major aftermarket head units.
Recommended System Matching
- Perfect for Cicada Neo mids, high-power coaxials and horn-loaded drivers.
- Use 2Ω speakers to unlock full amplifier output.
- Bridge channels to power serious mid-bass pods or compact motorcycle subwoofers.
- Add a DSP for competition-level tuning and staging.
Need help designing your system?
Motorcycle Audio Australia can tailor a complete front-stage, rear-stage or full-bagger setup around the FLX1400.4.
Shipping
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.
Return policy
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.