A very good amplifier in it's price range.
It fits well with K701, and balanced HD600 also perfomances good.
But it has a bug: the audio balance falls to left channel when the volume is lower than 9 o‘clock. Although the sound will not be loud enough when the volume is lower than 9 o'clock, it also makes me a little uncomfortable.
PflanzI have that same "bug" on my Micca Origen+ DAC/amp as well. Just below 9 o'clock on the dial the left side will stop putting out sound and only the right side will have sound. I have both the 6XX and 58X. I'd never play that low anyways but I just tried it on my dac/amp to see if it happens to me.
Mark_MMy Vali 2 also has a channel imbalance from 7:30 to 8:00, where the volume is too low to enjoy music. It quickly balances after that point and plays loud at 9:00. I read that it's not an anomaly, but just the volume pot doing that down low where it doesn't count. BTW, how is the 6Xx vs the 58X? I have the latter, but have always been intrigued by the 6XX. God bless!
PflanzChannel imbalance at super low volumes is very normal in amps really. So don't worry about it. It's not a sign that your amp is defective or failing or anything. It's just a thing that happens when you have analog dials.