A control point, on smartphone/tablet, to manage everythingĪll these components need to be connected on the same lan, better if wired except control point. SoTM sMS200 as NAA (you must activate HQPlayer NAA service) HQPlayer Embedded as renderer, running on separate pc Bubbleupnpserver (for OpenHome compatibility), running on nas MinimServer as upnp server, running on nas You can connect a dac to the pc running HQP Embedded or you can use your SOtM sMS200 as NAA (HQP network audio adapter) with the dac attached to it. HQPlayer Embedded is a version of HQPlayer that runs on a dedicated pc and appear as a upnp renderer on the network (you can run it using an USB key), using Bubbleupnpserver you can configure it as OpenHome renderer. there is free 30 days trial too.You cannot install HQPlayer on a nas, you need a separate pc (quite powerful) and install on it HQPlayer Embedded (if you want to use MinimServer with it) there is a forum on computer audiophile which helps in solving the problems of the users of hqplayer. while the quality is one of the best but the software hqplayer itself is a bit tricky to set up mainly because the information about its use and error reporting are very less. i have listened to these and found that sinc filter of hqplayer sounds most natural and transparent. this process can also be performed in real time in computer through softwares like hqplayer, j river, resampler v in foobar etc. some of the recent chord dacs have garnered much praise for sound quality in which number of taps ( filter length ) are higher which results in better upsampling (interpolation ).
almost all dacs do upsampling internally. although for the sound of dacs there are many contributing factors but major affecting factor is quality of upsampling. some dacs use longer filter ( more samples to interpolate ) some less. for this theoretically you need infinite filter length which is practically not possible so using special algorithm this length is reduced to some practical levels. say from 44.1khz sampling rate you can recreate a wave form having maximum frequency as 22.05khz. I am not exper but as per nyquist shannon sampling theorem you can recreate the analog wave form from discrete band width limited signals.
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