TERRATRIP PROFESSIONAL V2

Two volume controls.

Powered from car battery.

Noise cancelling microphones for improved sound reproduction.

2 way radio connection with radio isolation switch.

AVC (auto volume control), eliminates 100% of amplified background noise.
Limiter, automatically reduces maximum amplified noise for as short period. If you shout, the other person will not be deafened, the electronics temporarily reduces the maximum peak of amplification.