NJM8068 (marked 8068 906F JRC) by Japan Radio Company. Low noise bipolar input dual audio operational amplifier. Website, Data sheet.

The NJM8068 features Low distortion, high slew rate, wide bandwidth and high open-loop gain. In addition, unity-gain stable allows voltage-follower operation. These features make NJM8068 ideal for audio pre amplifier, microphone amplifier, line amplifier and other audio applications. (From the data sheet)