ARC AUDIO
X2 850.5
400 RMS 5 CHANNEL Amplifier
$4,699.00TT
Price VAT Inclusive
Description
All-in-One System Power Without Compromise
The ARC Audio X2 850.5 is the ideal solution for audio enthusiasts and professional installers looking to build an entire system with a single amplifier. Designed to deliver both space savings and exceptional sound, it provides four channels of full-range output for components or coaxials — plus a dedicated 400-watt subwoofer channel — all from one compact chassis.
Whether you’re powering a 2-way passively filtered front stage with rear fill or simply running four coaxials speakers, either with the addition of an add-on subwoofer, the X2 850.5 eliminates the complexity and cost of multiple amplifiers. With reduced wiring, fewer connections, and a smaller footprint, it streamlines installations while maintaining the sonic precision ARC Audio is known for.
Balanced differential inputs across all channels ensure compatibility with both aftermarket systems and OEM factory radios, including those without traditional RCA outputs. This makes the X2 850.5 perfect for cost-effective upgrades in modern vehicles where retaining the factory source unit is a must.
Built on ARC’s installer-first Level 1 cosmetic platform, the amp features a rotatable CNC-machined badge for seamless mounting orientation. Under the removable top panel, you’ll find intuitive access to crossover controls, gain settings, and connections — keeping your installation clean, serviceable, and professional.
If you’re after high-end results with fewer components and a clean layout, the X2 850.5 offers a complete, powerful solution — all in one.
| Total Amplified Output Channels | 5 |
| Stereo @ 4 Ohms | 4 x 85 Watts |
| Stereo @ 2 Ohms | 4 x 125 Watts |
| Stereo @ 1 Ohms | N/A |
| Bridgeable Speaker Outputs | Yes |
| Bridged @ 4 Ohms | 2 x 250 Watts (CH1-4) |
| Bridged @ 2 Ohms | N/A |
| Other Channels @ 4 Ohms | 1 x 225 Watts |
| Other Channels @ 2 Ohms | 1 x 400 Watts |
| Other Channels @ 1 Ohms | N/A |
| Output Load Switch | N/A |
| Output Type | Class-D |
| Fuse Rating | 3 x 30 Amp |
| Idle Current | 3A |
| Amplifier Operating Voltage Range | 8V – 17.1V |
| Adjustable Class-D Switching Frequency | No |
| Built-in Fan Cooled | Yes – Variable Speed Ball Bearing Fan |
| Input Channels (Analog) | 2/4/6 |
| Input Channel Selection | 2/4/Sub Channel |
| Input Channels (Analog Type) | Balanced (RCA or Speaker Level) |
| Input Sensitivity (Analog) | 200mV – 3.5V |
| Input Impedance (Analog) | 10k Ohms |
| Input Gain Type | Analog Control (1 control p/pair of channel L/R) |
| Amplifier Slave In/Out (RCA) | N/A |
| Frequency Response | 10Hz – 20kHz |
| S/N Ratio @ 1 Watt | TBD |
| S/N Ratio @ Full Power | TBD |
| Auto-Sense Turn-on | DC (BTL)/Signal (Ch1 Detect) |
| Crossover Type Ch 1/2 | HP, Full (12dB Linkwitz-Riley) |
| Crossover Range Ch 1/2 | 50Hz – 500Hz |
| Crossover Type Ch 3/4 | HP, Full |
| Crossover Range Ch 3/4 | 50Hz – 500Hz |
| Crossover Type Ch 5/6 | LP Only |
| Crossover Range Ch 5/6 | 30Hz – 230Hz |
| Bandpass Crossovers | N/A |
| Crossover/Front-end “Bypass” | N/A |
| Bass Boost | Variable 0-12dB @ 45Hz (Ch 5 only) |
| Onboard Diagnostics | Yes – Protection: Thermal, Under/Over Voltage, Short, DC & More |
| Clip Warning Lights | N/A |
| Compatible External Level Control | Yes, Included (Works on Ch 5 only) |
| Dual External Control Use (Optional) | N/A |
| Remote Turn-on Pass Through | N/A |
| Cosmetic Trim Level | X2 Level 1 Trim |
| Dimensions | 12.42″(L) x 6.268″(W) x 2.162″(H) |