[jackfs]

Thinking about buying the Z10, I noticed that you do not need an MHL adaptor to do the TV out option. In the manual it says that you can buy a micro USB to hdmi cable to hook into your TV, could the same be true with a micro USB to RCA composite cable (red, white, yellow)? My current HTC I have hooked micro USB to RCA composite and they plug into a Power Acoustic DVD/Monitor headrest in my car. I did see an HDMI to RCA composite converter for sale under Amazon, but would love to avoid buying that too. Any way to make this work? Only other thing the headrest monitor has is AV1 input is USB input, other then AV2 input is 3.5mm jack that divides to RCA composite (red, yellow, white).

[dc/dc]

Not directly, but you could buy a converter. The Z10 has a Micro HDMI port in addition to its USB.