Preamplifier for Broadband measurement hydrophoneThe PA4 if made for AS-1 hydrophone, designed to provide maximum sensitivity in a small size while also providing a linear response in the bandwidth of the highest-quality commercial digital sound recording interfaces. The As-1 can be used directly with your scope or DAQ device or use with the PA4 preamp and any digital recorder or sound interface for high-quality, low-cost underwater sound analysis. Available fully assembled as P48 version for use with microphone preamps that offer phantom power, DC version for external power. Also sold as board only.Options Detail:P48 For use with microphone preamps offering standard IEC P48 phantom power. Typically works with reduced headroom with phantom power voltages as low as 24 volts. NOTE: It is possible using this order page to select other output options for this P48 option. The P48 configuration is only shipped with XLR male output.