Hello to you all ! My first post here.
Today I received the package with Topping EX5 ordered last week at Audiophonics.fr (after I found out about it from this forum).
EX5 replaces a Topping D50s (to which I was going to add an A50s to use with some HifiMan Sundara headphones), but after seeing Amir's review of the EX5 I decided to take the last one because it is a DAC + HP Amp combo, even that now I have no use for the D50s.
First thing I uninstalled and then reinstalled the Topping USB Audio driver v5.12.0 (although I don't think it was really necessary, considering that the former DAC was also a Topping product) and then I updated the firmware to v1.65 (my unit had v1.63). I downloaded the firmware update from "
https://www.tpdz.net/download".
So far, I like the new unit in my PC near-field setup (EX5 hooked up via XLR cables to a Sabaj A20a desktop stereo integrated amplifier conducting a pair of Wharfedale Diamond 220), but I can't say that I really noticed any difference from the old D50s sound (which was to be expected, both units being very good and acoustically transparent DACs).
The display is larger and, therefore, more readable than the little screen of the D50s and I like the orange color more (it complements better the blue color of the Sabaj A20a display).
I have also briefly listened to the Sundaras through EX5 and I liked the sound from the HP out too. On Low Gain, with the volume set to 70 (out of 100), the sound is pretty loud. If I switch to Hi Gain with the volume set to 70, is already too loud (for my taste).
The volume is on a scale from 0 to 100, and not in dB (say from -99 dB to 0 dB, like more "professional" DACs), but that's not such a big deal after all.
The real problem from what I can tell so far is that the unit is running pretty HOT pretty quickly during operation (even after a couple of minutes after I turned it on, it was already hot), much more than the Sabaj A20a amplifier, for example. I suspect that the HP amplification portion of EX5 stays on even when the Line output is selected, because I don't think that the actual DAC portion can run so hot during operation. I hope this is a normal thing and that my unit is not defective, although I'm a little worried.
Can other Topping EX5 owners confirm the problem with overheating during operation, please?
[Edit]: By comparison, the D50s were running quite cool during operation.