Carla babban mai watsa shirye-shiryen plugin ne na kayan masarufi, tare da goyan baya ga direbobin sauti da yawa da tsarin plugin.
Yana da wasu kyawawan fasalulluka kamar sarrafa sufuri, aiki da kai na sigogi ta hanyar MIDI CC da ikon nesa akan OSC.

A halin yanzu Carla tana goyan bayan LADSPA (ciki har da LRDF), DSSI, LV2, VST2, VST3 da tsarin kayan aikin AU, da tallafin fayil na SF2 da SFZ.
Yana amfani da JACK azaman tsoho kuma fitaccen direba mai jiwuwa amma kuma yana goyan bayan direbobin asali kamar ALSA, DirectSound ko CoreAudio.

Akwai nau'ikan sarrafa injin guda 4:

• Abokin ciniki guda ɗaya: (Direban JACK kawai)
  Daidai da Multi-abokin ciniki, sai dai duk tashoshin JACK na abokin ciniki guda ɗaya ne.
  Ana buƙatar wannan lokacin da saitin baya goyan bayan aikace-aikacen JACK masu yawan abokin ciniki, kamar LADISH.
• Abokin ciniki da yawa: (Direban JACK kawai)
  Ana fallasa kowane plugin guda ɗaya azaman sabon abokin ciniki na JACK. Audio da MIDI tashoshin jiragen ruwa suna rajista kamar yadda ake bukata.
• Rack:
  Ana sarrafa plugins cikin tsari, daga sama zuwa ƙasa.
  Ba a tallafawa plugins tare da tashoshi masu jiwuwa marasa sitiriyo, amma akwai zaɓi na tilas-sitereo don masu Mono.
• Patchbay:
  Yanayin patchbay na zamani, kamar a cikin JACK Multi-abokin ciniki da sauran aikace-aikace na zamani.
  Kowane plugin yana samun rukunin canvas na kansa da tashar jiragen ruwa yana ba ku damar haɗa sautin plugin da MIDI.