Running backing tracks from an iPad with a Y-cable
What plugs into what: the cable, the adapter for iPads without a headphone socket, a DI box for the desk and a headphone amp for your ears.
Published 3 September 2026
The cheapest rig that reliably runs backing tracks with a click is an iPad and one cable. This is the whole signal path, and what to buy for each part of it.
The cable
A Y-cable, sometimes sold as an insert cable or a stereo breakout: a 3.5 mm stereo plug at one end, two mono 6.35 mm jacks at the other. On the stereo plug the tip is the left channel and the ring is the right. With Click Left's default routing, left is the click and right is the track, so the jack marked L or tip goes to your ears and the one marked R or ring goes to the desk. Buy one with a proper moulded split rather than two loose leads, and label the two ends with tape the day it arrives.
iPads without a headphone socket
Recent iPads have a USB-C port and no headphone socket. Apple's USB-C to 3.5 mm adapter has a small audio converter inside and works well; so do most adapters that show up to the iPad as a headphone output. Do not use Bluetooth for the audio itself. The delay and the dropouts make it useless for a click. Bluetooth is fine for a pedal.
Your ears
The iPad can drive in-ears directly, but then the one volume control moves the desk's level too. Put a small headphone amp, or the line input of a wired in-ear pack, between the L jack and your ears. Set the iPad's volume to maximum and use the amp for your level. The desk then gets the same signal all night whatever you do with your ears.
The desk
The R jack carries the mix. Long unbalanced cable runs pick up hum, so plug that jack into a DI box at your end and send the desk a balanced XLR. Tell the engineer it is a mono track and that, with the iPad at maximum, their channel fader is the only volume control it has.
An interface instead
A class-compliant USB audio interface gives you balanced outputs, more level and a separate output for the click. Click Left lets you send the click to any output and the track to any one or two, so the click can go to output 3 while the track goes to 1 and 2. An interface and an iPad together may need a powered hub so the iPad charges through the set; check that before the gig, not during it.
Before you play
Plug in power. Turn on a Focus so calls and alerts cannot interrupt the audio. Turn on Guided Access so a stray tap cannot leave the app. Then run Soundcheck in Click Left with the real cable in. It checks that every file decodes, that the routing matches the outputs it can see, the battery, the storage and Low Power Mode, and it warns you if the click is about to come out of the iPad's own speaker.