I've had one of these little Toppings (VX1) for about three years now - I must have got it when it was new.
I only just discovered that yes, it does suffer from balance issues when at very low volume. I used to have it in the basement and only played it loud - I moved it to the office and tried to play quietly sometimes, to find that the right channel doesn't come in properly until volume is up past 5% or so.
Besides that, wonderful unit with way more features than you could expect at the price point, and manages to drive adequate power for desktop listening.
Now they've got VX2 and VX3 models, which offer more power out at 8Ω - but I don't like either - the VX2 has no analog in (and a pretty garish looking LCD volume display window), while the VX3 has no USB in. So to step up would either call for cutting out USB, or analog input. Hmmm, I want the VX2+3=5.
And I've read the thread linked elsewhere from this one ... but I'm still not closer to understanding *why* cheap volume pots (/ICs) are subject to balance problems when set low low. Seems a weird problem.
Anyway - besides that issue, it's a lot for a little, and I'll keep an eye on Topping in case they make a new T-amp with *everything* crammed in (except for bright LED lights - they can go). I want one of those!