Audio upgraded with 4ch rockfordfosgate amplifier and 12inch MTX subwoofer in Innova Crysta at Rm cardecors in chennai, coimbatore, cuddalore, dharmapuri, erode, madurai, kanyakumarai, namakkal, salem, sivagangai, thanjavur, theni, vellore, vilupuram, virudhunagar, kerala, kochi, ernakulam, kozhikode, kollam, thrissur, alappuzha, palakkad, ooty, bangalore, madras, hyderabad, aravenu, vaalparai, thrissur, dharmapuri, madras, karur, namakkal, kochin, allephy, chalakudi, alwva, kannur, shornur, pattambi