





Sundown Audio SAEv4-100.4 4-Channel Amplifier
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Subwoofer Wiring Diagram
Select your configuration to view possible wiring combinations.
Loading wiring diagrams…
Diagrams are on our wiring diagram page.
- RMS Power — 100W x 4 @ 4Ω, 125W x 4 @ 2Ω, 250W x 2 @ 4Ω bridged
- Class — Hi-fidelity Class A/B
- Crossovers — Variable 12dB low- & high-pass: 40Hz–5kHz
- Input Sensitivity — 6V max
- Protection — Thermal, voltage, speaker short, DC-offset
This Listing Includes: (1) Sundown Audio SAEv4-100.4 4-Channel Amplifier
The SAEv4-100.4 is a hi-fidelity Class A/B 4-channel amplifier delivering 100W x 4 at 4 ohms, 125W x 4 at 2 ohms, and 250W x 2 at 4 ohms bridged. Built on half-bridge technology with an all-new chassis and heatsink carrying 33% more aluminum, it runs cool during intense sessions. Variable 12dB low-pass and high-pass filters span 40Hz to 5kHz, paired with a 6V max input sensitivity and a 92dB signal-to-noise ratio for a low noise floor. A 4-way protection circuit guards against thermal, voltage, speaker short, and DC-offset faults, with power and protection indicators on board. Authorized Sundown Audio dealer at JS Ultimate Sounds. Free shipping on orders $99+.
Features
- Hi-fidelity Class A/B half-bridge design
- Variable 12dB low- and high-pass filters (40Hz–5kHz)
- Chassis and heatsink with 33% more aluminum for cooler operation
- 4-way protection: thermal, voltage, speaker short, DC-offset
- Power and protection indicators
Specifications
| RMS Power @ 4Ω | 100W x 4 |
| RMS Power @ 2Ω | 125W x 4 |
| RMS Power Bridged @ 4Ω | 250W x 2 |
| Class | Hi-fidelity Class A/B |
| Crossovers | Variable 12dB LPF & HPF, 40Hz–5kHz |
| Input Sensitivity | 6V max |
| Signal-to-Noise Ratio | 92 dB |
| Protection | Thermal, voltage, speaker short, DC-offset |


