




Couldn't load pickup availability
The Punch PBR300X1 is a compact, efficient 300W mono subwoofer amp with Boosted Rail Technology for big bass in small cars, trucks, and electric vehicles.
| CEA-2006 Compliant |
75W x 1 @ 4Ω ≤1.0% THD+N |
| Total Power (Sum of Rated Power) |
300 Watts |
| Dynamic Power (PVC/PowerCube®) |
96 Watts x 1 @ 4-Ohm 189 Watts x 1 @ 2-Ohm 326 Watts x 1 @ 1-Ohm |
| Rated Power (RMS Continuous Power) |
75 Watts x 1 @ 4-Ohm 150 Watts x 1 @ 2-Ohm 300 Watts x 1 @ 1-Ohm |
| Heat Sink Type | Extruded aluminum |
| Bridgeable | No |
| Suggested Alternator | 75 A |
| Power Input Connector | Detachable Compression Terminal |
| Power Wire Gauge | 10 AWG |
| Signal Output | - |
| Remote Controls | Optional PEQ provides 0dB to +18dB @ 45Hz |
| Visual Indicators | Power/Protect, BRT (Boost) |
| Dimensions (H x W x D) | 1.53 x 4.25 x 6.75 (in.) 3.90 x 10.8 x 17.2 (cm) |
| Shipping Weight | 2.76 lb. (1.25 Kg.) |
| Efficiency (average) | 75% @ 4-Ohm 75% @ 2-Ohm 75% @ 1-Ohm |
| Average Current Draw (13.8V Music) | 15 A |
| Total Harmonic Distortion (THD+Noise) |
4-Ohm:<1.0% 2-Ohm:<1.0% |
| Operating Voltage | 9 - 16 VDC |
| Input Sensitivity |
Low-Level: 150 mV - 4 V High-Level: 400 mV - 11 V |
| Number of Channels | 1 |
| Crossover Controls | Low-Pass: 35Hz - 250Hz @ 12dB/Octave Butterworth |
| Tone Controls | External via Optional Punch EQ |
| Recommended Fuse (not included) |
30 A |
| Signal Input | High/Low Input Switch High/Low Level Input: 4-Pin harness Hi-Level Sensitivity: Variable DC offset sensitivity |
| Speaker Output Connector | 4-Pin Harness Wiring Convenience: 2 Negative Terminals (-) 2 Positive Terminals (+) |
| Speaker Wire Gauge | 16 AWG |
| Cooling | Convection |
| Circuit Topology Class | Class BR |
| Frequency Response | 20Hz - 250Hz +/-3dB |
| Max. Current Draw (13.8V Sinewave) | 30 A |
| Channel Separation | — |
| Signal-to-Noise (CEA) | >86 dB |
| Common Mode Rejection | >65 dB |
| Damping Factor | >200 |
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.








