Power modules with traditional power supply (LEMO)
Connection:Traditional 200 V
Channel(s): 2
GRAS 12AA 2-Channel Power Module with gain and filters
The GRAS 12AA Power Module is a dual channel power supply for preamplifiers used with condenser microphones. It is for general use in acoustic measurements as well as for intensity measurements; both in the laboratory and in the field.
Connection:
Traditional 200 V
Channel(s): 1
GRAS 12AD 1-Channel Power Module
The GRAS 12AD Power Module is a single-channel power supply for preamplifiers used with condenser microphones. It is for general use in acoustic measurements; both in the laboratory and in the field.
Connection: Traditional 200 V
Channel(s): 8
GRAS 12AG 8-Channel Power Module with gain and filters
The GRAS Power Module 12AG is an 8-channel power supply for preamplifiers used with condenser microphones. It is for use in multichannel acoustic measurements in both laboratory and field.
Connection: Traditional 200 V
Channel(s): 1
GRAS 12AK 1-Channel Power Module with gain and filters
The GRAS 12AK is a single-channel power module with a 7-pin LEMO 1B connector for power and polarization of an externally polarized microphone set. It features instantaneous and latched overload indication, adjustable gain settings, A-weighting, and Lin and HP filters. These features make the 12AK the ideal choice for a wide range of applications such as monitoring, laboratory use, and sound level meter measurements.
Connection: Traditional 200 V
Channel(s): 4
GRAS 12AN 4-Channel Power Module
The GRAS 12AN 4-Channel Power Module is a four-channel power module with 7-pin LEMO 1 B connectors for externally polarized measurement microphone sets. The inputs are AC-coupled directly to the outputs for a flat frequency response down to 0.05 Hz. It provides the basic features for powering condenser measurement microphones. The polarization voltage can be selected to 200 V for externally polarized microphones or 0 V for prepolarized microphones. The supply voltage for the preamplifiers is ±15 V.
Connection: Traditional 200 V / CCP
Channel(s): 2
GRAS 12AQ 2-Channel Universal Power Module with signal conditioning and PC interface
The GRAS 12AQ Power Module is a dual-channel power supply for preamplifiers (CCP as well as traditional) used with measurement condenser microphones.
Connection: Traditional 200 V
Channel(s): 2
GRAS 12AR 2-Channel Power Module
The GRAS 12AR Power Module is a dual-channel power supply for preamplifiers used with condenser microphones. It is for general use in acoustic measurements; both in the laboratory and in the field.
Connection: LEMO
Traditional 200 V
Channel(s): 1, 2 or 4
TEDS via USB
GRAS 12BC, 12BF and 12BD LEMO Power Modules with TEDS Support
GRAS 12BC, 12BF and 12BD are 1-, 2- and 4-channel LEMO power modules, respectively. They have TEDS support and can be powered by USB or AC mains.