Answer:

stereo

Answer	Crossword Clue
STEREO	Something a couple of speakers can provide
STEREO	Binaural
STEREO	Sound system

STEREO	Coming from two speakers
STEREO	Something no single speaker provides
STEREO	Lead-in to -scope
STEREO	Like binaural audio
STEREO	Playing on both sides
STEREO	Start to type?
STEREO	What no single speaker is capable of
STEREO	Two-channel

STEREO	Typical intro?
STEREO	Standard equipment on most cars
STEREO	Half of quadraphonic
STEREO	What plays to both sides?
STEREO	Lead-in to phonic
STEREO	Standard auto feature
STEREO	Dual-channel
STEREO	What an iPod plays in

STEREO	LP introduction of 1957
STEREO	Most music is played in it
STEREO	House of the speaker?
STEREO	Den system
STEREO	It has left and right channels
STEREO	Word on many LPs
STEREO	Not mono
STEREO	Quadraphonic halved

STEREO	Disc holder
STEREO	Coming from both sides
STEREO	Sound choice?
STEREO	Successor of 31-Across
STEREO	Music may come in it
STEREO	Two-track
STEREO	Tuner's place
STEREO	Typical lead-in?

STEREO	Like some recordings
STEREO	Two-part
STEREO	Sound setup
STEREO	CD player
STEREO	Multichanneled