Hifiman EF-5 headphone amp upgrade with Burson Supreme Opamps
I installed your Supreme Sound opamps for Hifiman EF 5 – headphone amplifier. I replaced it for IC opamp OPA 627 BP. After burn the system (about 40 hours) to clear sound across the spectrum, significantly raised dynamics, and show musicians in space is much more accurate. I took your scaled Sound opamp 4th generation, […]