The Sparco IS-300 is the digital intercom amplifier in the middle of their range. Part number 00537047BT.
Two things separate it from the analogue IS-200. It has selectable noise filters, and it has Bluetooth.
The filters are the reason most people move up. In a loud cockpit an analogue amplifier passes on the engine and the road noise along with the voice, and after two hours of that you stop hearing pace notes properly. A digital unit processes the noise out, and being able to select the filter means you can set it for the car rather than accepting one compromise.
Bluetooth lets you bring a phone or a radio into the intercom, which matters if you take calls on road sections or run a service link.
Where it fits
Rallying above club level, and any car loud enough that clear speech is a problem rather than a preference. It takes both male and female Nexus connectors.
The rest of the system
An amplifier alone does nothing. You need headsets or helmet microphones and speakers for both people, plus leads. Tell us the helmets you run and we will put a working set together, because connectors are where these systems go wrong.
The IS-400 is the top of the range if you need more again.








