The Volt has an 11-speed Shimano/Sram cassette included to save most riders a job during set-up. That set-up is marginally more effortANT+ connectivity, thru-axle adapters, 16% gradient simulation and 1,800 watts at maximum power. When you've paired the power and built-in cadence sensor, the Volt also allows you to pair a heart rate monitor via the JetBlack app, which then displays on-screen in your app of choice. It's a useful feature that's currently unique to the Volt. It felt smooth, didn't move a millimetre and reacted very sharply during interval sessions in ERG mode, going from 150 to 350 watts in less than two seconds, and without jolting. Power accuracy is claimed to be +/-2.5%, but compared to our Assioma pedals we actually found on average the Volt was inside that. It's quiet, too, putting out just 61dB at 200 watts. The Volt is seriously impressive for the price and just edges this head-to-head.
