I havent had an any psychedelics that were especially auditory and Ive had 2ci, 2ce, mdma, mda, lsd, lsa, 5-meo-dmt, n-n dmt, 4-ho-mipt, 4-aco-dmt, shrooms, n2o, ketamine...you get the point. Out of all these I would say mda was the most out there in terms of being close to delerium and not being able to distinguish between reality and trip for about 1-2 mintues of getting stuck in a trance.
However, LSA (more so than mdma) and also N2O were very much auditory in the sense that they enchanced everything around me and especially music. LSD is close but the visual and mental aspect is too overwhelming for me to listen to music while tripping hard. I also need to mention although not a psychedelic GHB also enchanches the auditory aspect of music, almost like MDMA but not as psychedelic.
The most intense auditory (and very impressive visually) was from doing bumps of ketamine over the course of 1hr-2hrs and after the onset of each bump I would take 1-2 maybe 3 nitrous balloons. This caused everything around me, my friends voice to become high alien pitched and the music and tv more distorted than ever. I believe ketamine is best used with n2o to this day and I am not someone that enjoys ketamine on its own.
Although I have never heard voices like you say, the only times that were like that were either from straight amphetamines or from amphetamine derivatives all the time being awake for more than 24hrs, even with pure/clean mdma (esp if mixed with coke), or even from the phenethylamines if awake for too long.
p.s. dmt (n-n-dmt) is incredibly insane and visual but never had 'voices' like u mention rather like a trance where everything is covered in your eyes with psychedelia and the sounds are of a different world they dont really amplify the sounds around you, other than amphetamine based psychedelics i've truly had voices and talking to imaginary people on anti histamines like 12-15 dramamine/gravol/benadryl. Also i candyflipped LSD + MDMA but I must have not done it right b/c I did the mdma 2hrs after high grade acid and ended up redosing on mdma 4-5hrs into the trip and passed out, but it was magical for the first part, I do remeber listening to music but can't recall the details, however LSA (Hawaian Baby Woodrose, only 3-4 seeds) along with some weed feels very much like a mild version of a candyflip.