I don't understand what you mean sir. Also, right now I have audioengine A5+ speakers with built in amp.
Amplifier takes input from a DAC’s analog output and amplifies it so that the current / voltage can move the speakers woofer / tweeter etc.
So a DAC (Digital to Analog Converter) takes the bits via USB / Optical Fiber / Coaxial / Bluetooth and converts it to analog output (the RCA output) back of the DAC.
So you need think about the signal chain :
Source -> DAC -> AMP -> Speakers / Headphones as far as playing audio is concerned.
Having inbuilt amp can be helpful. If you have inbuilt amp for your speakers your speakers are called active speakers.
So get a DAC and connect the RCA output of this DAC to the RCA input of your speakers (left and right). And your are done.
Remember Topping D50s needs a power source (they provide a usb cable to dc input cable, this is not the cable for the audio signal). They provide another USB cable to connect to the USB input of Topping.
I would recommnend D50s since it has a remote and you need that if you don’t always want to go to your speakers to adjust volume.
If you are always using this on a desktop go for D10 (if you do not want Bluetooth). If you want to stream music via bluetooh over phone when not at desk then you need D50s.
Hope this helps. Again try to read up on some fundementals I gave your signal chain start there , first understand what your sources are and what kind of speakers / headphones then rest of the things need to be brought to make it all good.