A Stethoscope with direct audio input capability such as Cardionics E-Scope II allows you to connect the stethoscope to your Cochlear Baha Sound Processor Via a Mini Mic 2+ wireless device.
We would recommend you contact the companies that make these devices direct for further information.
Please see link below:
Using the Cochlear Phone Clip it is possible to connect to a Bluetooth stethoscope
For example - The Cochlear Wireless Phone Clip can be used with a 3M Littmann