+ Audio quality.
+ Quality built.
+ Swappable opamps.
- Device gets rather hot (after a while), on the outside, no ventilation openings, inside temperature probably very high. Should be taken in account when stacking devices.
- Remote volume(-) is sometimes interpreted as volume(+) on the edge of its range (~5m).
- Remote control "Next" of my Onkyo C-S5VL SACD is also interpreted as "Next audio channel" by the device. No other matching codes.
- Volume control motor makes a lot of noise. A full rotation to zero is performed at startup, even when it is at zero already. (Nnngggjjj...)
- Volume is reset at absolute zero at startup. Requires getting used to.
- Volume knob has no visible position-indication.
- Documentation ?