Maybe it’s just me, but I like to peek at other people’s signal paths whenever a screendump is posted. Interesting to see how others are killing their bit-perfectness.
(Basic PCM upsampling (Precise, Minimum Phase), signal goes from Node 2 via SPDIF coax to MiniDSP (for Dirac DRC) to Meridian DSP speakers (also via SPDIF) – or directly to headphones).
After microRendu there is a Mojo connected to Sennheiser HD800S which I have EQed somewhat to create a profile with more bass for some ECM jazz albums.
I have two, because at this point I can’t decide which sounds better. Both use mostly the same hardware; “PlayPoint” uses only Roon DSP with the PlayPoint configured as a Roon network endpoint; “HQP-iMac” uses only HQP DSP with the PlayPoint configured as an HQP NAA, plus an additional computer.
Roon DSP is smooth, minimum (or linear) phase; 7th order (CLANS); parallelized; native DSD. HQP DSP details are shown pretty well in the graphic.
In HQP and with CUDA enabled, closed-form averages about 25% CPU and poly-sinc-shrt-mp about 28%. I think closed-form might be doing more work in the GPU but haven’t got a tool to check it.