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  • Power Module - Type 12HF

    The G.R.A.S. Power Module Type 12HF is a power supply for single-channel, low-noise measurements using the matched, low-noise preamplifiers and high-sensitive microphones of a G.R.A.S. low-noise measuring system.

  • Power Module - Type 12HM

    The G.R.A.S. Power Module Type 12HM is a 10-channel power supply for multi-channel low-noise measurements using the matched, low-noise preamplifiers and high-sensitive microphones of a G.R.A.S. low-noise measuring system.