 There is also continuing debate about the proper use of negative feedback in amplifier design . Controversies There is substantial controversy on   the subject of audiophile components;
<meaning-changed>  There is also continuing debate about the proper use of negative feedback in amplifier design . Controversies There is substantial controversy on   the subject of audiophile components;
 There is also continuing debate about the proper use of negative feedback in amplifier design . Dedicated amplifiers are also commonly used by audiophiles to drive headphones, especially those with high impedance and/or low sensitivity, or electrostatic headphones. There is substantial controversy on the subject of audiophile components;