The Wadia a340 digital mono amplifier provides 400 watts at 8 ohms or 500 watts at 4 ohms into a single channel. It shares the same sleek, modern industrial design as the 321 decoding computer, making a pair of a340s a perfect choice to use with the 321 to build your audio system.
The a340 includes the latest technology from Wadia. It features a comprehensive balanced signal design from input through output stage known as IO Symmetry™ that provides total system differential pairing – resulting in increased audio quality and noise reduction. Frequency Switching Transmission™ (FST) is an adaptive modulation design in the amplifier circuitry that assures full output power is delivered over the entire audio spectrum. To protect your speakers, Signal Surveyor™ monitors the output signal and stops amplification if unsafe levels of DC voltage are detected.
Both balanced and unbalanced inputs are available for connecting your other system components; balanced and unbalanced outputs are also included for ease of connecting bi-amp configurations. 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 a340 is turned on/off.
400 watts into 8 ohm loads
500 watts into 4 ohm loads
OUTPUT LOAD IMPEDANCE
8 ohms or 4 ohms
RATED POWER BAND
20Hz to 20kHz
TOTAL HARMONIC DISTORTION
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
1.7dB 8 ohm load
2.7dB 4 ohm load
+0, -0.5dB from 20Hz to 20kHz
+0, -3.0dB from 10Hz to 70kHz
A-WEIGHTED SIGNAL TO NOISE RATIO
90dB (116dB below rated output) Balanced
87dB (113dB below rated output) Unbalanced
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
10K ohms Balanced and Unbalanced
12VDC, 50mA maximum, delayed 0.2 seconds
Width 17-7/8 inches (45.4 cm)
Height 3-3/8 inches (8.6 cm) including feet
Depth 20 inches (50.8 cm) including cables
26.5 pounds (12 kg)
Note: All Specifications are with AC Line voltage of 120V.