Yulong A28 fully balanced class A headphone amplifier black

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Manufacturer Details

Practical Efficiency:
SNR: > 120dB
THD+N: 0.0005 %
Crosstalk > 100dB
Frequency response:20 -20 KHz-0.3 dB
Balance output power:600 ohm ₤ º400mW 300 ohm ₤ º700mW 150 ohm ₤ º1.3 W
32 ohm ₤ º2.5 W unbalance output power: 600ohm ₤ º120mW 300 ohm ₤ º200mW 150 ohm ₤ º350mW 32 ohm ₤ º800mW Power Consumption:

Product Features

A28 is a fully balanced class A headphone amplifier constructed by 4 amplification channels. Its complete connections are convenient to connect source and headphones with different terminals. Plitron power transformer from Canada, Neutrik XLR connectors, and Alpha 4-gang potentiometer made in Tai Wan. Unbalanced inputs are converted to balanced signal by an OPA1632, and the balanced/unbalanced input selection is done by a group of relays to optimize signal The amplification is OPAMP driven complementary transistor buffer (also known as ¡°Diamond Buffer¡±). Please be noted, if you use a same source to feed A28, do not connect the RCA and XLR interconnects altogether. This will cause common ground interference and degrades the performance of the RCA input signals. (This applies not only to A28 but other similar products in our tests).

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