Music Hall vs. Schiit

Optical cables aren't susceptible to interference.Coax cable has wider bandwidth.A couple of inexpensive but well thought of coax cables are Wyde Eye(Amazon) and the $12.99 coax from Monoprice.Coax measures and performs optimally at 1 to 1.5 meter lengths.You can research that further if it's of interest:)
Optical cable should be sturdily built,both the plastic and glass cables tend to crack in the super inexpensive brands that can be had for just a few $.Something from Audioquest,Kimber,Pangea should be fine.

The Schiit Modi Multi connected with Blue Jeans coax to my Oppo 103 sounds very good to my ears. 

Thank you, jtcf. That confirms my limited understanding of interconnects. I might add that in the past I followed the debate on whether there was a perceptible difference between the lower-shelf $5 cable & the off-the-scale $3,500 item. Without starting a firestorm, cables manufactured from high-quality components from a reputable company will suit my listening preferences just fine. I prefer to spend my discretionary dollars (euros, etc.) elsewhere in my audio system.

I use coaxial cable from player and optical cable from hdtv, and soon a usb cable from my phone to my Schiit Modi3

Interestingly, I ended up ordering the Schiit Modi Multibit DAC & a Blue Jeans coax cable today -- same as that of tomcarr.
My plan is to connect the DAC to my existing Cambridge Audio Azur 840C which decided to commit suicide. If I am lucky & the internal DAC in the 840C is dead, then I can use the unit as a transport. Otherwise, I plan to get a Cambridge Audio CXC transport.