Dear headfellows,
> It will be good if having power outlet at the back of concerto, that can provide power for stageDac. Look like too many blocks and cables for this headphone combo setup.
> I prefer the pure head-amp only, without volume control, let StageDac control the volume and crossfeed.
The CONCERTO is not intended to be just a supplement to the STAGEDAC. It is an headphone amplifier that should also appeal to people that use other sources.
As for the volume control, be aware that the STAGEDAC uses a "simple" potentiometer only. The CONCERTO has a much more sophisticated and better sounding volume control. It does use a one-track (mono) potentiometer whose position is determined by a ADC. This output value of this ADC is used to steer a number of relais that control the gain-factor of the input amplification stage. Very unusual, very sophisticated, but very good sounding, without any balance problems.
> Any promo/pre-order?
Sorry, these have not been planned.
> Would it be possible to have price indication
Very similar to the price of a single STAGEDAC.
> 2 analog inputs are mandatory on the concerto
Any amp in this price region is a compromise. Choices have to be made what is to be put in and what is not.
In a sense the CONCERTO is a very puristic amplifier. Only one pair of inputs and no preamp outputs. This keeps signal paths short and limits costs.
Cheers
Jan