Is this compatible with BO6 HD+ Bluetooth receiver adaptor?

The iFi iPower 2 is available in a range of voltage variants. For example, if your unit requires 5V, as long as the current requirement is less than 2.5 amps, the iPower 2 will be the correct rating. The iPower 2 also comes with a selection of interchangeable output plugs and polarity inverter (if required).