Now that @SwedishMike @pennstac and @AudioTool have presented their systems, I would like to try to outline my path through my systems of various component combinations and explain why I have combined them in the way I have.
This could be a long journey because, as some of you have noticed, I have several “meters” 
of hi-fi material at my disposal.
I will try to give an update on my system 1-2 times a week and give a reason why I have this particular system in my portfolio.
Maybe I might step on one or two reviewers’ toes
because I sometimes see/hear things differently than they do.
My aim is and always has been to make headphones shine. I have rarely given up on a model and have always tried to get the best sound out of the headphones by tinkering or combining them in various ways.
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Here I’ll start with my entry-level system, which I think is highly recommended.
My basis is always streamed music from Tidal & Apple Music.
Then I chose the most neutral headphones from the Koss portfolio, the KSC75
and the equally neutral TinHifi T2 original,
to use them via iPad and Apple dongle, either directly or connected to xDuoo MT-602.
But why exactly this combination?
Well, this is ideal for beginners to experiment with, because it is relatively cheap and simple, and the relatively neutral sound reproduction makes it easy to research.
1.) What difference do tips and ear pads make?
2.) Does a DAC make a difference in the sound chain and if so, how big is it?
3.) How much worse does Bluetooth or wireless sound compared to a direct cable connection?
4.)
Is there a difference between a solid-state amp and a tube amplifier and what does it do?
5.) How does replacing the tubes affect the sound?
6.) How much money do I have to invest to put together a system to hear noticeable improvements in sound if you have a basic combo as a reference?
7.) For the high end faction among us, it is sometimes not a bad idea to have something like this as an alternative to be grounded and to learn to appreciate the 30-100K system again and not necessarily have to invest the next 4-5-10K to tease out marginal differences in there systems!
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These are all, on a smaller scale, the questions that run through the entire hifi journey, and you can use them to gain basic knowledge that can later lead to saving some money and investing it wisely.
