Velocity RZA1000.4 – 4-Channel 1100W Amplifier for Harley-Davidson Touring
The Velocity RZA1000.4 is a compact, efficient and motorcycle-ready 4-channel amplifier designed to deliver clean 1100-watt power to high-performance Harley audio systems. Whether you're driving horn tweeters, 6.5″ mids or a set of powerful 6×9 speakers, the RZA1000.4 provides stable, high-quality output in the tight mounting spaces inside Harley fairings and saddlebags.
This amplifier is available in two configurations: the RZA1000-WP version includes a premium waterproof 8AWG power harness kit, while the RZA1000.4 variant offers the amplifier on its own for riders with existing wiring solutions.
Key Features
- 1100W x 4 channels — ideal for mids, horns and 6×9 speakers.
- Compact Class-D design fits inside Road Glide and Street Glide fairings.
- Premium waterproof harness option ensures reliable, clean power delivery.
- Efficient thermal management designed for motorcycle environments.
- Perfect for high-efficiency SPL and touring audio systems.
- Lightweight, shock-resistant chassis engineered for real-world riding conditions.
Why It Works on Harleys
- High efficiency minimises battery and stator load.
- Compact footprint allows installation in tight Harley fairing chambers.
- 4-channel flexibility supports front + rear systems or mids + horns.
- Premium harness eliminates wiring guesswork (WP model).
Available Variants
- RZA1000-WP — Includes 8AWG waterproof power harness kit
- RZA1000.4 — Amplifier only (no power kit)
Recommended System Use
- Fairing systems: 6.5″ mids + horn tweeters.
- Saddlebag systems: 6×9 mids or horn-loaded components.
- Front/rear multi-channel touring setups.
- SPL builds that require clean, stable multi-channel power.
Fitment
- Harley-Davidson Touring Models (Street Glide, Road Glide, Ultra, CVO, etc.)
- Compatible with most aftermarket amp plates and trays
- Works with OEM and upgraded charging systems
Specifications
| Model | Velocity RZA1000.4 |
| Power Output | 1100W × 4 channels |
| Channels | 4 |
| Topology | Class-D |
| Harness Options | RZA1000-WP (with kit) / RZA1000.4 (no kit) |
| Recommended Speakers | 6.5″ mids, horn tweeters, 6×9 mids |
What's Included
- Velocity RZA1000.4 Amplifier
-
RZA1000-WP Variant Includes:
- Premium 8AWG waterproof power harness
- Inline fuse assembly
- Connectors & power accessories
- RZA1000.4 Variant Includes: Amplifier only (no harness)
- Mounting Hardware
Need Help Choosing the Right Variant?
If your bike already has a power distribution block or aftermarket harnessing, choose the RZA1000.4. If you want a complete, waterproof, plug-ready wiring solution, choose RZA1000-WP.
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.