 (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.
<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.
 (Note that vinyl records may be mastered differently from their digital versions. ) The interaction between the loudspeakers and the room (room acoustics) plays an important part in sound quality. Sound vibrations are reflected from walls, floor and ceiling, and are affected by the contents of the room. Room dimensions can create standing waves at particular (usually low) frequencies. There are devices and materials for room treatment that affect sound quality. Soft materials, such as draperies and carpets, can absorb higher frequencies, whereas hard walls and floors can cause excess reverberation. , vacuum-tube electronics remain popular, despite most other applications having since abandoned tubesfor solid state amplifiers.