| Business | Phone |
| Auto Audio Repairs Plus 17515 E Arrow Hwy, Azusa 91702 | (626) 969-0699 |
| Audio Engineers 17515 E Arrow Hwy, Azusa 91702 | (626) 969-0699 |
| Route 66 Sound Factory 941 W Foothill Blvd, Azusa 91702 | (626) 633-0300 |
| Sharp Vision Audio 767 E Arrow Hwy, Azusa 91702 | (626) 915-0300 |