An analogue preamp designer question

I like parametric EQ because now i use headphone...

And being to drive amplifier/ speakers is good but high end headphone amplification will be a winner...

Most high quality amp drive only speakers and headphone amplification is specialized now...

Why not a very good pre-amp for all use ?

By the way for me your design is stunningly good... Congratulations!

I think it looks good. Very clean I agree. I think you need remote control.

Without a test printout of frequency response, signal-to-noise ratio, THD+N and one channel un-driven crosstalk measurements, it would be difficult to gauge the price to performance value. You have to know what your competitors are capable of at any price point. 

I believe these days there is almost no connection between performance and price, unless the price is really low, say below $500. For example see, https://www.audiosciencereview.com/forum/index.php?threads/measurements-of-gustard-p26-preamplifier.10492/ and products of Schiit.

For those who have mentioned remote control @raysmtb1 @sid42, you either get good mechanical controls, or remote control. It is very expensive to implement a mechanical switch which is working in interaction with remote control for channel switching. Motorised potentiometer is also making tactile experience from using volume knob worse. For C15 McIntosh went a classic way of using microcontroller-driven electromechanical switching, with a simple tactile switches on front panel. The downside is basic tactile experience: there is little fun touching such buttons, but pros are integration with anything which can be controlled through microcontroller: RS232, remote control, mobile app, etc. 

BTW in the device above, the buttons are having orange, yellow and blue shutters inside, so when you press it, it mechanically becomes colored from inside.

My question is do people in hi-end/hi-fi really care of tactile experience?

A remote control is very practical...

But because of what you described it is not priority...

I listen to audiophile sound not to convenient tool for anything but music...

It is me for sure... I would also like a remote control... But i dont need it for audio sound experience which is my priority...Anyway i am in headphone listenin and i seat beside the headphone amp... I am not a representative customers for your pre-amp...

Nowadays people use headphone as often if not much often than dedicated speakers system...Especially the young... Then why not introducing them to good sound with a pre-amp made for speakers system ?

You kill two birds with one stone...

And yes the volume pot tactile experience or any control count to... Quality of design is the promise for a quality of sound..

i like your description about "colors inside"..

By the way i dont like push-buttonon/off ... i prefer turning button...But this is my taste...

BTW in the device above, the buttons are having orange, yellow and blue shutters inside, so when you press it, it mechanically becomes colored from inside.

My question is do people in hi-end/hi-fi really care of tactile experience?

I’d like the tactile experience… I understand your point. I bought a bunch of different Macintosh products, and they try to mix the two together. It’s not easy and I’m sure not cheap.