




Couldn't load pickup availability
The R2-500X4 is a 500W Class-D amp, 4Ω/2Ω stereo or 4Ω mono. High efficiency, C.L.E.A.N. clipping detection, & P.O.W.E.R. supply for high dynamic power.
| CEA-2006 Compliant |
75W x 4 @ 4Ω ≤1.0% THD+N |
| Circuit Topology Class | Class-D |
| Efficiency (average) | |
| Input Sensitivity | Low-Level: 150 mV - 4 V High-Level: 450 mV - 12 V |
| Frequency Response | 20 Hz - 20 kHz |
| Bridgeable | Yes |
| Dynamic Power (PVC/PowerCube®) |
90 Watts x 4 @ 4Ω 160 Watts x 4 @ 2Ω 300 Watts x 2 @ 4Ω Bridged/Mono |
| Rated Power (RMS Continuous Power) |
75 Watts x 4 @ 4Ω 125 Watts x 4 @ 2Ω 250 Watts x 2 @ 4Ω Bridged/Mono |
| Total Power (Sum of Rated Power) |
500 Watts |
| Number of Channels | 4 |
| Signal-to-Noise (CEA) | CEA-2006: >80 dB Rated-Power: >100 dB |
| Total Harmonic Distortion (THD+Noise) | 4Ω: <1.0% 2Ω: <1.0% |
| Accepts RCA Input | Yes |
| Channel Separation | >50 dB |
| Damping Factor | |
| Signal Output | Low-Level: 2 RCA (Pass-Thru active with RCA or Hi-Level input) |
| Tone Controls | No |
| Signal Input | Front Low-Level: 4 RCA Front High-Level: 4-Pin Molex Rear Low-Level: 4 RCA Rear High-Level: 4-Pin Molex Input Switch: 2/4 Input (works for RCA/hi-level inputs) |
| Common Mode Rejection Ratio | >55 dB |
| Adjustable Crossovers | Yes |
| Crossover Controls | Front High-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth Front Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth Rear High-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth Rear Low-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth All-Pass: Yes |
| Remote Controls | No |
| Visual Indicators | POWER (Blue) / PROTECT (Red) C.L.E.A.N. IN (Red) C.L.E.A.N. OUT Front (Blue/Red) C.L.E.A.N. OUT Rear (Blue/Red) |
| Power Wire Gauge | 4 AWG |
| Power Input Connector | Compression Terminal Block |
| Speaker Wire Gauge | 8 AWG |
| Speaker Output Connector | Compression Terminal Block |
| Cooling | Convection |
| Heatsink Type | Die Cast Aluminum |
| Operating Voltage | 9 - 16 VDC |
| Recommended Fuse (not included) |
80 A |
| Average Current Draw (13.8V Music) | |
| Max. Current Draw (13.8V Sinewave) | 59 A |
| Suggested Alternator | |
| Dimensions (H x W x D) | 1.9" x 6.8" x 10.1" (4.9 cm x 17.3 cm x 25.5 cm) |
| Shipping Weight |
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.


