Answer: MONO

AnswerCrossword Clue
MONOLike old Elvis albums
MONOLike most pre-'60s recordings
MONOLike old records
MONO"The kissing disease"
MONOLike most early LPs
MONOStereo's precursor
MONOOne-channel
MONOHi-fi description
MONOLike many doo-wop records
MONORail heading?
MONOLike old 78s
MONOLike 45s
MONOPre-stereo sound
MONOUnseparated sound
MONOLike old recordings
MONOMSG component?
MONO[XXX]
MONO"Kissing" disease
MONOIt's less than stereo
MONOM of MSG
monoinfectious mononucleosis
MONOOld LP format
MONOStereo forerunner
MONOTeenage affliction, in short
MONOSingle prefix
MONONot stereo
MONOHi-fi setting
MONOPart of MSG
MONOSingle-channel
MONOOne-track
MONOThe M in MSG
MONOLike old LPs
MONOPre-stereo
MONOLike early recordings
MONOTeen malady
MONOLike many old records
MONOStereo predecessor
MONO"Kissing disease," for short
MONOHaving just one speaker
MONOLike many audio books