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The TM400X4ad is a 400-Watt 4-channel amplifier with high-efficiency Class-ad technology & a conformal coated PC board designed for motorsport & marine.
| Input Sensitivity | 150 mV to 12 V |
| Total Harmonic Distortion (THD+Noise) |
4-Ohm:<1.0% 2-Ohm:<1.0% |
| Bridgeable | Yes Front Terminals: Left (+) Right (-) Rear Terminals: Left (+) Right (-) |
| Rated Power (RMS Continuous Power) |
100 Watts x 4 @ 4-Ohm 100 Watts x 4 @ 2-Ohm 200 Watts x 2 @ 4-Ohm Bridged |
| Signal Input |
Front High/Low Level Input: 4-Pin harness Rear High/Low Level Input: 4-Pin harness |
| Dynamic Power (PVC/PowerCube®) |
128 Watts x 4 @ 4-Ohm 152 Watts x 4 @ 2-Ohm 290 Watts x 2 @ 4-Ohm Bridged |
| Frequency Response | 20Hz-20kHz +/-1dB |
| CEA-2006 Compliant |
100W x 4 @ 4Ω ≤1.0% THD+N |
| Number of Channels | 4 |
| Total Power (Sum of Rated Power) |
400 Watts |
| Efficiency (average) | >75% |
| Crossover Controls |
High-Pass: 50Hz-250Hz @ 12dB/Octave Butterworth Low-Pass: 50Hz-250Hz @ 12dB/Octave Butterworth All-Pass: Yes |
| Circuit Topology Class | Class AD |
| Signal Output | — |
| Tone Controls |
Treble: 0 to +14 dB @ 12.5 kHz Bass: 0 to +18 dB @ 45 Hz |
| Power Input Connector | Detachable Compression Terminal Replacement 1040-57997 |
| Visual Indicators |
Power: Blue LED Protect: Red LED Input Clip: Red LED3 Output Clip: Blue/Violet/Red LED1,2,3 LED Color Legend: 1BLUE: <0.5% THD 2VIOLET: 1% THD 3RED: 10%+ THD |
| Remote Controls | — |
| Power Wire Gauge | 8 AWG |
| Speaker Output Connector |
Front: 4-Pin Harness Rear: 4-Pin Harness |
| Heatsink | Extruded Aluminum |
| Speaker Wire Gauge | 16 AWG |
| Cooling | Dual Fan Cooled |
| Recommended Fuse (not included) |
60 A |
| Operating Voltage | 9 - 16 VDC |
| Average Current Draw (13.8V Music) | 28 A |
| Max. Current Draw (13.8V Sinewave) | 55 A |
| Suggested Alternator | 75 A |
| Dimensions (H x W x D) | 1.6 x 4.3 x 8.3 (in.) 4.1 x 10.8 x 21.1 (cm) |
| Shipping Weight | 3.4 lb. (1.54 Kg.) |
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.










