Could someone reccomend cheap and simple tube amp to build for 45ohm headphones beacause i had old tube amp for stereo and it was loud as hell untill it break and i saw prices for replacement tubes but for headphones tubes should be cheaper, or should i chose wide linear response chip to get...

Hello , i have used small in ear headphones for about year and listened trough them at night , i also had stereo system with big old 60-70s 90w high quality speakers and modern 150w din amp speakers had freq response from 25hz to 25khz and that was almost true , it was possible to hear from 15...