The CCA 1000 is a compact low-noise conditioning charge amplifier designed for use with piezoelectric hydrophones and other piezoelectric detectors. The CCA 1000 enables the uses of long cables between hydrophone and amplifier without affecting the hydrophone sensitivity. The input capacitance can be selected to match the hydrophone capacitance for close unity gain or to achieve input gain up to 20dB. The input resistance, control the lower frequency limit -3dB break frequency. The output gain can be selected from 0 to 32dB.

The VP1000 is a 1MHz bandwidth single ended voltage preamplifier, designed for use with piezoelectric hydrophone and a variety of transducers. VP1000 offers excellent low-noise performance, gain selection in 6 levels and options of 12 Hi-Pass filters. The high input impedance of 100Mohm allow for low frequency measurements with even very small sensor element capacities. Encapsulated in aluminum box The VP1000 is water stain resistant.

The VP2000 is a 1MHz bandwidth voltage preamplifier designed for uses in conjunction with piezoelectric hydrophones. VP2000 offers excellent low-noise performance over the entire frequency range; gain selections in 6 levels from 0 to 50dB. A range of 12 high-pass and 12 low-pass filters are available, - these allow ideal band pass filter settings. The VP2000 has a high input impedance which allow the measurements at frequencies below 1Hz with even very small hydrophones sensor capacities.