these are the sounds found in most native Quechua dialects:
there are also sounds not on the chart

Other sounds:

labio-velar central approximant /w/

Cuzco and Central Bolivian dialects:
series of voiceless aspirated consonants
series of voiceless glottalized ejective consonants

Quechua includes sounds from Spanish loan words:
voiced bilabial, alveolar, and velar stops
voiced retroflex fricative
front and back close-mid vowels [e] and [o]

The following allophonic variations often occur in Quechua:
voiceless uvular fricative --> voiceless uvular stop
voiceless velar fricative --> voiceless glottal fricative [h]
alveolar nasal --> velar nasal (syllable finally except before apical consonants)
voiceless alveolar fricative [s] --> voiceless postalveolar fricative when adjacent to a high front unrounded vowel [i]
vowels /i/ and /u/--> [e] and [o] respectively (when next to uvular fricative)
(except in Spanish loan words where [e] and [o] are contrastive)

(from: Lyovin, Anatole. 1997. An Introduction to the Languages of the World. NY: Oxford University Press.)