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WADIA DIGITAL Wadia - a315 Power Amplifier

Power Amp

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Item: AWDAA315

Wadia a315 Power Amplifier

The Wadia a315 digital stereo amplifier provides 150 watts per channel at 8 ohms or 250 watts per channel at 4 ohms. It shares the same sleek, modern industrial design as the 321 decoding computer, making it a perfect amp to use with the 321. Both will blend nicely with virtually any room styling.

Along with all of a new generation amplifiers, the a315 is able to deliver massive amounts of power directly to your speakers with very little energy wasted in heat dissipation thanks to its electronic switching design. Large cooling fins or noisy fans often found in other high power amplifiers are no longer needed. The result is a greener, compact and energy efficient amplifier.

"The Wadia made the most of the high-resolution signal it was presented with, not only paying close attention to the finer slivers of detail, but also contextualizing them to the benefit of the sound's overall credibility. It allowed the layers of sound to be peeled back, revealing elements and nuances that can so often go unnoticed by less diligent amplification. The tonal spread was wide and generous, with plenty of bottom-end foundation to underpin the performance, and a smooth midrange that steered a pleasing path between creamy texture and lean agility."
Audio Video SA

The a315 features some of the latest technology from Wadia. Frequency Switching Transmission (FST), an adaptive modulation design, reduces distortion at any power level over the entire audio spectrum. Using a feedback technique, it makes real time micro-adjustments to the switching carrier frequency to improve linearity, thereby significantly reducing audio distortion. The higher the amplifier's power output, the greater observed reduction in distortion. Signal Surveyor monitors the output signal and stops amplification if unsafe levels of DC voltage are detected, thus protecting your speakers.

"Clean, uncluttered aesthetics provide no clue to the big, spacious, and generous delivery of these power amps. Loads of muscle ensure ample authority and pace, but never to the detriment of musical empathy."
Audio Video SA

Both balanced and unbalanced inputs are available for connecting your other system components. Specially designed 5-way binding posts will securely hold your speaker wire; they are designed for easy finger tightening and come with a special tool if even more snug connections are desired. A trigger input and output makes it simple to control the power state of your entire system when the a315 is turned on/off.

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   150 watts into 8 ohm loads
   250 watts into 4 ohm loads
Impedance: 8 ohms or 4 ohms
Rated Power: 20Hz to 20kHz
   0.1% maximum harmonic distortion at any level from 250 milliwatts to one-half of rated power output, 20Hz to 20kHz;
   0.5% maximum harmonic distortion at any level from one-half to full rated power output, 20Hz to 20kHz
Dynamic Headroom:
   1dB 8 ohm load
   1.6dB 4 ohm load
Frequency Response:
   +0, -0.5dB from 20Hz to 20kHz
   +0, -3.0dB from 10Hz to 70kHz
Input Sensitivity:
   2.4V Balanced
   1.2V Unbalanced
SNR (A-weighted):
   90dB (112dB below rated output) Balanced
   88dB (110dB below rated output) Unbalanced
Intermodulation Distortion: 0.1% maximum if instantaneous peak power output does not exceed the rated output for any combination of frequencies from 20Hz to 20kHz
Wide Band Damping Factor:
   Greater than 320, 8 ohm load
   Greater than 160, 4 ohm load
Input Impedance: 10K ohms Balanced and Unbalanced
Voltage Gain: 29dB
Trigger Input: 5-15VDC, <1mA
Trigger Output: 12VDC, 50mA maximum, delayed 0.2 seconds
Dimensions (WHD): 17-7/8" x 3-3/8" x 20"
Weight: 27 lbs.

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