1. The problem statement, all variables and given/known data Select a suitable opamp to interface the hydrophone. Ideally the hydrophone noise will dominate the system. Consider the input referred 1. voltage noise, 2. current noise, 3. input capacitance, and 4. input impedance of the opamp. http://www.dtic.mil/dtic/tr/fulltext/u2/a265915.pdf 2. Relevant equations which opamp would have noise dominate the system, inverting or noninverting? 3. The attempt at a solution inverting/non inverting opamp described in link. i think I would pick an inverting/noninverting opamp, but which have noise dominate the system? I read the article and I am confused at this part.