Ultra linear, neutral and very good sounding AV class headphone amplifier based on the specialized TPA6120 chip. It is believed that this microcircuit is the THS6012 ADSL driver that has not passed the tests, however, given the requirements for the THS6012 ADSL driver - the frequency response unevenness of 3 dB at frequencies up to 140 MHz and at a load of 25 Ohm, even a 10 times degradation of the chip's characteristics will not be heard in the audio range.
High load capacity (from 16 Ohm), very solid characteristics inherited from the older THS6012 chip, a good package with heat dissipation directly to the board and a short path allow you to create a neutral headphone amplifier of the Hi-Fi level.
The presence of a stabilized power supply on the amplifier board eliminates the need to assemble one, and also significantly reduces the possibility of interference with a relatively long connection when using a separate power supply.
This amplifier can be called an uncompromising solution for the sake of quality, and therefore, there are no blocking capacitors both at the input and in the feedback circuit. Also, there is no protection at the output, while the chip itself has a number of protections. In the event that the path (source + headphones) significantly exceeds the cost of the amplifier itself and in order to obtain full 100% security of the path, it is recommended to send a signal to this module through isolation capacitors, and connect the headphones through the protection module.

Output short circuit protection
Overheat protection