Tashlhiyt Berber contrasts singletons and geminates in intervocalic as well as in initial and final positions. This study presents results of an investigation of the phonetic correlates that distinguish these types of segments in these three positions. A claim has been made that Tashlhiyt Berber geminates are simple segments that are distinguished from their singleton counterparts primarily by tenseness. This proposal is not supported by our data. The examination of ten temporal and non-temporal parameters shows that consonant duration is the most systematic correlate across all types of consonants and positions, even for voiceless stops after pause. Preceding vowel duration and, to a lesser degree, amplitude of the release were also found to be significantly affected by gemination. These additional characteristics, interpreted as enhancing correlates, may be present in order to increase the perceptual distance between the two phonemic categories.