Audiophilepure

This feature acts as a real-time indicator, allowing users to verify that their high-resolution digital source remains unaltered throughout the playback chain—an invaluable tool for audiophiles who want to ensure bit-perfect transmission.

To the right of the volume knob, the EH1 includes a dedicated gain button, which toggles between high and low gain modes for better compatibility with sensitive IEMs or demanding full-sized headphones. Additionally, a separate power button is conveniently placed on the far-right side of the unit.

In addition to the volume knob, the EH2 features dedicated bass and treble adjustment knobs, a relatively rare inclusion in desktop DAC/Amps.

These allow users to fine-tune the tonal balance of their audio in real time, offering a convenient way to shape the sound signature without needing external equalizers or DSP software.

The tonal balance of the EH1 is quite good. The delicate and smooth treble response pairs nicely with the meatier mid-bass, and the richer than neutral mid-bass can be a boon for genres like EDM, R&B, and hip-hop, though it might work against more congestion-prone genres such as metal or alternative rock. I did observe that the depth perception improved when I supplied power through the 12V adapter. However, I couldn’t achieve as clean a background on DC power as I did on USB, which makes me think that using the EH1 with just any adapter isn’t the best idea despite the manual. While a dedicated power supply like iFi’s iPower might further enhance its performance, it would push the total budget to around 350 USD and open the door to other, more capable devices, so there is no point going that route as well.