HA400 : Does its job pretty well

I needed a small headphone amp, just for tracking, in order to split the signal to multiple headphones. I think this is one of the cheapest headphone amps (if not the cheapest one), so I was keeping my expectations low regarding the quality.

I was pleasantly surprised when I tested it: I have no noise/hum issues. I can't tell for sure whether the audio signal that comes out is degraded. It may be, so just to be safe I wouldn't use it for critical listening, but just for tracking it is the perfect cheap solution.

Keep in mind that due to its small size and weight, you may need to stick it on your desk to keep it steady.

For a cheap solution that just works, I'd surely recommend it.