xDuoo TA-20 is a full balanced headphone amp, you can find all the reviews here.
The latest tube amp series of xDuoo include,
If you would like to check the price of this full balanced tube amp
(Image Credit: Audio Science Review)
TA-20 is responding well to tube rolling and this alone makes the product stand out of non-expensive Chinese products that usually have tube just for visual effect. I have tried couple of Sylvania tubes that I have for a long time and they made highs go up a bit.
The TA-20 is beautifully clear and clean, with superb airiness and detail. It has a touch of warmth to it, but not as much as you might expect, given the tubes.
Balanced interconnections are usually used in professional setups with long cables, and their design is conceived to avoid noise interferences, making the signal go separately in both channels, phase inverted at origin and inverted again on the output stage, so noise is discarded.
An image speaks by itself better than me…
(Image Credit: DeBilbao on Head-fi)
Xduoo TA-20 _(Z Reviews)_ Truly Balanced
(Note: Video credit to Z-review, you can subcribe his Youtube channel by clicking here)