The TC 4042 is a spherical noiseless hydrophone.
With its built-in 20db Preamp it offers a high sensitivity and is able
to drive up to 1000m cable, like the TC 4032.
The Ambient TC 4042 is the allrounder within the
Ambient hydrophone range. Not as sensitive as the 4032 but with an
exceptional SNR it is perfectly suited for every sea-state and high peak
levels. Due to its compact size the TC4042 will fit perfectly inside
both the 20 cm and 30 cm Sonar Surround Directivity Spheres where the
high-pressure zone in front of the Sphere compensates for the slight
high frequency roll-off compared to the 4032. This makes it a premium
choice for submarine multichannel recordings