Why you need Teflon tube sockets : They’re expensive and may seem like an extravagance but our beloved tubes are sensitive to vibrations and vibration is rife throughout the chassis. The vibration softens the imaging and veils harmonics, robbing the music of its tonal tapestry. Teflon sockets act as a vibration absorber for the chassis’ shakes and acts as a damper for airborne vibrations. It also grips the tube pins better than ceramic sockets, and has a more favorable dielectric characteristic so that high notes can soar! This is not a small improvement and I’d put it on the same level as a major cap upgrade.