Question about Tone Controls + Equalizers


So I wanted to get opinions on Tone Controls.

I listen to all my music including LP's with Tone Controls defeated.

Why do I do that, you say? Because when I started on this journey I had the impression in my mind that in order to be an Audiophile, you have to listen to all music in it's purest form otherwise you are degrading the sound (I know, a very novice and naive mentality). 

So my first questions, do you all listen to LP's with tone controls on or off (if you have the capability in your system)?

My second question is about equalizers and in particular the Schiit Loki. If you have Tone Controls in your system, is adding a equalizer or tone control system useless or does it interfere whit your built in Tone Controls? Would you have defeat the Tone Controls on your own system in order to use the Loki or could they work with each other? I am not sure.

Do you all think a device like the Loki could possibly help fine tune your system sound? Is anyone using it in their own rig with LP playback?

That is what I would use it for, LP Playback, if I ever got the Loki or anything similar.

Thanks
jay73
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It seems most here use tone controls to correct deficiencies in specific recordings which is great. There is also the realization that a lot of trouble occurs at the 3-4 kHz region and a slider here would be very useful. Cutting here just 3 db can make a huge difference on records with sharp violins, female voices and such. Also because our ear's frequency response changes with volume (Fletcher-Munson) we become way more sensitive to high frequencies. This is what limits the volume on many systems. On some recordings at volume (95-100 db) I have the treble rolled off up to 12 db at 20 kHz. You might notice that some older rock recordings sound a bit dull. If you turn them up loud they sound just fine.
This is because the mastering was done at high volume and everyone was probably stoned. 
Not to worry Jay. This technology will drift down to lower priced equipment. Just keep an eye on companies like Anthem and NAD. 
Just to see what your system is doing on the computer is hugely informative. Comparing one side to the other there are significant differences between channels. These can be corrected improving your system's imaging. All this is done at very high resolution. In my system it is 48/192. The bit depth is need to cover a wide range of volumes particularly in the bass where you can have 10 db oscillations. Bass you can not deal with entirely with digital correction you also have to improve room acoustics as much as you can. 
It is also interesting that a perfectly flat curve does not sound right. My baseline curve is boosted 3 db at 18 Hz and rolled off 6 db at 20 kHz. You could probably approximate this with analog tone controls. 
+1 mijostyn
It was a horrifying experience the first time I measured the actual frequency response at my listnening place. And I believe my room isn't too bad. Recommend everyone to do that. Then we can talk. 
Tone controls are just another tool in the arsenal that is available to be used if you so desire.

You could use the built in tone controls of your amp and the Loki at the same time if you want to, but assuming that the built in tone controls are just a bass and treble adjustment and the Loki being only 4 bands you probably will not see much benefit in doing so.

If you were using a 1/3 octave e.q. to tune your system to your room and then use the Loki or your built in tone controls to adjust for variations in recordings you should see a more dramatic difference.
Some streamers have equalization and other signal processing capabilities built in.   An example is Ipeng streamer for the venerable Squeeze system.   I'm sure there are others.