I just connected it to my regular Hi-Fi setup, my impression was definitely different than when i listened just headphone output. Another, smaller problem, is I think it has too much bass in some specific frequency that makes it sound a little "hummy"?

Topping x Shenzhenaudio EX5 - Reviews - Head-Fi.org

In simple words, the biggest drawbacks of the composite amplifiers of the past (low-gain, low power output, increased resistance) were dealt with and those are no-longer apply to the Topping analog designs. In all fairness…the most expensive units that I ever bought (with the exception of my loudspeakers) were my digital to analog converters. I have no complaints and for a beginner DAC/amp stack I would easily recommend this for those getting into the hobby.That’s precisely why most of their units were covered by me in an in-depth fashion and plenty will be receiving a proper treatment in the future.

Topping EX5 Review - DAC With a Powerful Head-Amp - iiWi reviews Topping EX5 Review - DAC With a Powerful Head-Amp - iiWi reviews

The unit offers a fully balanced line level output plus single ended line level and headphone outputs. I personally enjoyed it with everything out there, with the exception of Hifiman headphones, but when it came to driving the hardest loads…it was running out of breath and was chocking down dynamics. I can nitpick about its less than perfect channel crosstalk, about its limited stage size, about its shy character down low and about a weaker power reserve with difficult loads as planar magnetics…and this is where my complaints would see a full stop.By default, it comes with Low-Gain enabled, but since it’s a noiseless amplifier, I recommend switching it to High-gain immediately as you are getting it and all your desktop headphones will be thankful for that.