Wrote an article to do just that without hiss, hum or microphony.. Suitable both for power triodes and the older triodes. https://www.dhtrob.com/zelfbouw/preamplifier_design_using_powertriodes.php
Not the easiest or cheapest way, but it will get you to pleasureville..
audio with realistic timbre
How to design preamplifiers using power triodes
September 6th, 2020 12:54