Hi mate, I read somewhere that balanced audio connections suffer less from channel imbalance than single ended audio design. But I can’t find where I read it. The only google results I could find today, related to this say:
“Ground loops. Balanced systems don’t ground a pin, meaning if there’s any ground voltage imbalance between a pre and amp, it won’t be part of the signal chain. With an RCA connector it almost always must be.”
“At higher frequencies, the output impedance of the output amplifier can change, resulting in a small imbalance. When driven in differential mode by two identical amplifiers, this impedance change will be the same for both lines, and thus cancelled out”
But definitely, balanced connections and cables may make things worse if you’re having to use even lower positions with the volume knob, since channel imbalance also has a lot to do with the amp design and when things become linear with the volume knob position.
I guess I’ll find out myself soon enough when I demo the HA-1 with both balanced and single ended cables. Fortunately the DS has -20dB gain attenuation which I can use to potentially keep balanced connections throughout and use more of the volume knob at the same time.