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+ Specifications
- CEA Rated: Yes
- Power Output: 111 watts RMS x 4 channel at 4 ohms and ≤ 1% THD + N 278 watts RMS x 2 channel at 4 ohms, 14.4V supply and ≤ 1% THD + N
- Signal-to-Noise Ratio: 81dBA (reference 1 watt into 4 ohms)
- Dynamic Power: 164 watts at 2 ohms
- Effective Damping Factor: 6.315 at 4 ohms
- Frequency Response (-3dB): 10Hz to 100kHz (-3dB)
- Maximum Input Signal: 5.5V
- Maximum Sensitivity: 230mV
- Output Regulation: .088 dB at 4 ohms
The Reference 7540a's high-output PWM MOSFET power supply ensures optimum power delivery into numerous impedances with low distortion.
A variable bass boost circuit is provided to optimize the low fequency performance of your system.
Full range preamp outputs are provided facilitating multiple amplifier hookups without the need for costly Y-adapters or signal splitters.
The 7540a comes outfitted with a variable 12dB per octave electronic crossover allowing you to optimize system tuning based on speaker location and accompanying loudspeaker components
High-level and low-level input are provided allowing you to interface the Reference 7540a with either an aftermarket or factory installed head units. | 
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