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  • Type 26AA

    Preamplifier with 30 cm lightweight cable terminating in a 4-pin LEMO 0B connector. Intended for use with G.R.A.S. Sound Intensity Probes, in which case they are also available in matched pairs under the name: Type 26AA Set.

  • Type 26AC

    General-purpose preamplifier with an integrated 3-m lightweight cable terminating in a 7-pin LEMO connector. A ¼" to ½" adapter, GR0010, is included, so that it can also be used with G.R.A.S. ½" microphones.

  • Type 26AL

    General-purpose preamplifier with an integrated 3 metre lightweight cable terminating in a 7-pin LEMO connector. Includes built-in SysCheck facility for enabling easy system checks to be made. A ¼" to ½" adapter, GR0010, is inc…

  • Type 26AB

    General-purpose preamplifier with an integrated 7-pin LEMO connector. A ¼" to ½" adapter, AF0008, is included, so that it can also be used with G.R.AS. ½" microphones. Cable not included.

  • Type 26HG

    Similar to Type 26AC but with 40 GOhm input impedance to enable low-level noise measurements at very low frequencies (infra-sound). Used in the Low-noise level microphone system Type 40HT

  • Type 26AN

    Preamplifier with an integrated 7-pin LEMO connector. Configured to permit use of the insert-voltage technique for determining the open-circuit sensitivity of a microphone. A ¼" to ½" adapter, GR0010, is included, so that it ca…

  • Type 26TC

    Preamplifier with an integrated 3 metre lightweight cable terminating in a 7-pin LEMO connector. Includes built-in TEDS* chip which enables it to be programmed with calibration data as a complete unit together with a microphone. A…

  • Type 26AS

    The G.R.A.S. ¼" Preamplifier Type 26AS is for acoustic measurements using condenser microphones.

  • Type 26AR

    The G.R.A.S. ¼" Preamplifier Type 26AR is for acoustic measurements using condenser microphones.

  • Types 26CB, -CC, -CG and CS

    CCP Preamplifier Type 26CB CCP Preamplifier Type 26CC CCP Type 26CG, Infra-sound (for Microphone Type 40AZ) CCP Preamplifier Type 26CS