The Yamaha XMV8140 is a high-performance multi-channel power amplifier designed specifically for installed sound applications that demand flexibility, efficiency, and reliability. Delivering 8 × 140W at 8Ω/4Ω, 8 × 125W on 70V/100V lines, or 4 × 280W in Double Power Mode, it supports both high-impedance (70V/100V) and low-impedance (4Ω/8Ω) operation simultaneously. This unique capability eliminates the need for external transformers or multiple amplifiers, simplifying system design while allowing different speaker loads to be driven from a single unit. Equipped with Yamaha’s newly developed YDIF digital audio format, the XMV8140 enables fast, straightforward system setup using standard Ethernet cabling. Each pair of channels can be independently assigned to 70V or 100V operation via rear-panel DIP switches without reducing available output channels. The innovative Double Power Mode doubles the output power of selected channels, making it possible to power speakers with varying output requirements within the same installation. Seamless integration with MTX/MRX series processors allows system parameters such as mute and attenuation to be controlled centrally using MTX-MRX Editor software. At its core, the XMV8140 features an advanced Class-D amplifier circuit with over 90% efficiency, combined with a PFC-equipped switching power supply to reduce current draw and improve system stability. Intelligent protection circuits guard against low impedance, overcurrent, and overheating, ensuring long-term reliability in demanding environments. Additional features such as per-channel source selection, redundant Backup and Override modes, and Ethernet-based external control make the XMV8140 an ideal amplifier for commercial venues, houses of worship, conference centers, and large-scale installed audio systems. Product Specifications: Output Power 1kHz (THD+N=1% 4Ω): 140 W x 8 Output Power 1kHz (THD+N=1% 8Ω): 140 W x 8 Output Power 1kHz (THD+N=1% 4Ω Double Power Mode): 280 W x 4 Output Power 1kHz (THD+N=1% 8Ω Double Power Mode): 280 W x 4 High Impedance 100V line: 125 W x 8 / 80 Ω High Impedance 70V line: 125 W x 8 / 40 Ω Voltage Gain RL 8Ω: 28.7 dB Voltage Gain RL 8Ω Double Power Mode: 31.7 dB Voltage Gain 100V: 38.2 dB Voltage Gain 70V: 35.2 dB Power Consumption: 1/8 power 250 W, Idle 73 W, Standby 23 W Total Harmonic Distortion: ≤ 0.2% Frequency Response: 20 Hz – 20 kHz ±1.0 dB S/N Ratio: ≥ 100 dB Crosstalk: ≤ -60 dB Input Sensitivity: +4 dBu Input Impedance: 20 kΩ balanced, 10 kΩ unbalanced Analog I/O: Euroblock x 2 6P balanced Digital I/O: RJ45 x 2 YDIF IN / OUT Speaker Output: Barrier strip x 8 pairs Control Ports: Remote and Fault Output Euroblock 3P x 1 Network: RJ45 x 1 Maximum Input Level: +24 dBu Load Protection: Output mute on power on/off, DC fault shuts down power supply, clip limiting Amplifier Protection: Thermal mute ≥90°C, overcurrent mute, low load impedance mute Power Supply Protection: Thermal shutdown ≥100°C, gain reduction Cooling: Dual 3-speed fans front to back airflow Power Requirements: 100V, 120V, 230–240V 50/60 Hz Product Weight: 22.3 lbs / 10.1 kg Product Dimensions (L × W × H): 16.6 × 18.9 × 3.5 in
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