General Switching Hubs & Waversa SmartHub ***Google Translation***
Typical Switching Hubs
Large amount of noise generated by SMPS adapter
Noise Free with 4 Li-ion batteries
Using Ultra Low Cost Crystal Oscillator
High-End Audio Grade Using High-Precision MEMS Clock
How the clock works
Generating a clock by using a vibrating property by applying electricity to a crystal (crystal) (a large displacement depending on temperature)
Semiconductors utilize the phenomenon of oscillation due to electromagnetic signal generation and operate with much more sophisticated operation and less displacement due to temperature
Data movement display Blinking light
△ (noise generation)
X (no noise)
LED display window
O (can be turned on / off when necessary, noise blocking)
ARM AP (CPU)
X (only for high-end products)
O (network status monitoring and traffic control)
O (2 USB A / 1 USB
Plastics are mostly used, and expensive products are made of iron
Vibration control Excellent aluminum body use
I also employ an 8-port run-of-the-mill HP made switch. Now I have a different network connection configuration.
Control PC (mac mini)
- Network A -> firewire-to-ethernet -> SmartHub sw -> HP sw -> rest of the network (WAN, NAS, Roonserver, etc.)
- Network B -> Audio PC (directly connected to Control PC via a fancy network cable)
Audio PC (HDPlex/Asus)
- Network B -> Control PC(direct connection)
Control PC and Audio PC are connected directly with a switch in between. Later I might put a filter (probably a transformer type) to see if SQ improves. Both PCs are powered by a LPS, again HDFlex 100W or 200W. I think mac mini network ports are noisier. Some people say the via firewire-to-ethernet adapter is the better port but I am not so sure.
BTW system is very stable now (ultrastream @170hz/0.02s). It goes without a hiccup for 24 hours at least at a time (roon radio). Once it becomes unstable, I restart both machines with usual ritual routine. I think most important part of the ritual is I do not let HQPlayer connect to jplayasio automatically when it is first run. I change HQPlayer setting to something other than jplayasio before shutting it down so it does not connect to jplayasio when it is run again. Once the HQPlayer is brought up into memory and nicely settled, then I change its setting to jplayasio. It is all empirical. My theory, however, is there is some sort of contention going on during the program initialization between them.
I am also thinking about powering the HP sw with LPS. It requires 12V but it has an odd looking power jack, sucks.