 (Note that vinyl records may be mastered differently from their digital versions. ) In the amplification stage    ,     vacuum-tube electronics remain popular, despite most other applications having since abandoned tubesfor solid state amplifiers. Also vacuum-tube amplifiers often have higher total harmonic distortion, require rebiasing, are less reliable, generate more heat, are less powerful, and cost more. 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>  (Note that vinyl records may be mastered differently from their digital versions. ) In the amplification stage    ,     vacuum-tube electronics remain popular, despite most other applications having since abandoned tubesfor solid state amplifiers. Also vacuum-tube amplifiers often have higher total harmonic distortion, require rebiasing, are less reliable, generate more heat, are less powerful, and cost more. 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;
 (Note that vinyl records may be mastered differently from their digital versions. ) In the amplification stage , vacuum-tube (valve) technology, or hybrid technology—semiconductors and vacuum tubes . Controversies There is substantial controversy on the subject of audiophile components;