Based on my limited experience, preamp is most important part after your speakers. You can read all the numbers and statements that logically sounds correct but if you add a good preamplifier, you understand why people use preamps.
p.s)Some DACs equipped with a in built preamp but still I prefer a separate preamp specifically a tube preamp!
p.s)Some DACs equipped with a in built preamp but still I prefer a separate preamp specifically a tube preamp!