I've noticed that I'm losing a lot of high end detail when I plug my soundcard into my hifi amplifier. I use this setup to record and mix music.
The soundcard is an 828mk2. Hifi amp is audiolab 8000a.
There are two obvious differences here - the soundcard outputs are +4db, whereas I believe hifi equipment is -10db. Also soundcard outputs are balanced and I'm using unbalanced cable.
I'd expect the balancing issue to cause RF noise problems rather than lowpassing so I don't think it's that (or am I wrong there)?
Is the level matching issue likely to be the cause of the poor sound quality? I don't want to spend a bunch of money on a level matching box only to find out it makes no difference! Could there be anything else here I should look into before buying a level matching box?