Preamplifiers with constant current power (CCP)

CCP preamplifiers connect to a CCP supply (for example the GRAS Type 12AL) via a standard coaxial cable and plug (e.g. BNC) or to an analyzer with a CCP input. In a CCP preamplifier, the power supply maintains a constant current superimposed on the same wire carrying the signal, therefore requiring only a standard coaxial cable and connector.

GRAS supplies measurement microphone cartridges and preamplifiers separetely and was first mover in the acoustics industri to bundle the two items! Pick and choose from the wide range of GRAS measurement microhpone sets.

GRAS 26CA 1/2'' CCP Standard Preamplifier with BNC Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.30 dB
Special feature: General purpose

GRAS 26CA 1/2'' CCP Standard Preamplifier with BNC Connector

The GRAS 1/2" Preamplifier GRAS 26CA is a general purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small,robust unit and uses a GRAS CCP power supply (ICP ®), e.g. GRAS 12AL. It has a very low inherent noise level, and a large dynamic range and a frequency resp..

GRAS 26CA-HT 1/2'' CCP High Temperature Preamplifier with BNC Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.30 dB
Special feature: High Temperature

GRAS 26CA-HT 1/2'' CCP High Temperature Preamplifier with BNC Connector

The GRAS 26CA-HT 1/2" CCP High Temperature Preamp (BNC) is a 1/2" CCP preamplifier for use with prepolarized microphones. It is optimized for high-temperature applications up to 120 °C (248 °F).  It has a low inherent noise level, a large dynamic range and a frequency response from 2 Hz to 200 ..

GRAS 26CB 1/4" CCP Standard Preamplifier with Microdot Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.35 dB
Special feature: General purpose

GRAS 26CB 1/4" CCP Standard Preamplifier with Microdot Connector

The GRAS 26CB 1/4" CCP Standard Preamplifier with Microdot Connector is a general-purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses a GRAS CCP power supply, e.g. GRAS 12AL. It has a very low inherent noise level, a large dynamic range..

GRAS 26CB-HT 1/4" CCP Standard Preamplifier with Microdot Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.35 dB
Special feature: High temperatures

GRAS 26CB-HT 1/4" CCP Standard Preamplifier with Microdot Connector

The GRAS 1/4" preamplifier is a general-purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses a GRAS CCP power supply, e.g. GRAS 12AL. It has a very low inherent noise level, a large dynamic range, and a frequency response from below 2 Hz..

GRAS 26CC 1/4" CCP Standard Preamplifier with SMB Connector

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.35 dB
Special feature: General purpose

GRAS 26CC 1/4" CCP Standard Preamplifier with SMB Connector

The GRAS 26CC 1/4" Preamplifier is a general purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses a GRAS CCP power supply, e.g. GRAS 12AL. It has a very low inherent noise level, a large dynamic range and a frequency response from below ..

GRAS 26CF 1/2'' CCP Preamplifier with BNC Connector, Gain and Filters

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.25 / +20 dB
Special feature: 0/20 dB gain, A-weighting and HP filters

GRAS 26CF 1/2'' CCP Preamplifier with BNC Connector, Gain and Filters

The GRAS 1/2-inch Preamplifier GRAS 26CF is a general purpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses a GRAS CCP power supply, e.g. GRAS 12AL. It has low inherent noise level, a large dynamic range and a frequency response from 2.5 ..

GRAS 26CG 1/4" CCP Preamplifier with Microdot Connector, Low Frequency

Freq range: 1 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.35 dB
Special feature: For low-frequency applications

GRAS 26CG 1/4" CCP Preamplifier with Microdot Connector, Low Frequency

The GRAS 26CG ¼″ CCP Preamplifier is a small robust unit optimised for acoustic measurements using condenser microphones. It has a very low inherent noise level, a wide dynamic range, and a wide frequency response from below 1 Hz to above 200 kHz...

GRAS 26CI 1/2'' CCP Preamplifier with BNC Connector, Low Frequency

Freq range: 1 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.35 dB
Special feature: Low frequency

GRAS 26CI 1/2'' CCP Preamplifier with BNC Connector, Low Frequency

The GRAS 1/2" Preamplifier GRAS 26CI is a preamplifier optimized for low frequency use together with prepolarized condenser microphones. It is a small, robust unit and uses a GRAS CCP power supply (ICP ®), e.g. GRAS 12AL. It has a very low inherent noise level, and a large dynamic range and a freque..

GRAS 26CK 1/2” CCP Standard Preamplifier with Microdot Connector, Very Short

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.45 dB
Special feature: For confined spaces

GRAS 26CK 1/2” CCP Standard Preamplifier with Microdot Connector, Very Short

The GRAS 26CK ½” Preamplifier, Very Short is a very small preamplifier optimized for use with prepolarized condenser microphones. It is a robust unit that uses a constant current power (CCP) supply. The 26CK has a very low inherent noise level, a large dynamic range, and a frequency response from be..

GRAS 26CS 1/4" CCP Standard Preamplifier with Microdot Connector, Very Short

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.45 dB
Special feature: For confined spaces

GRAS 26CS 1/4" CCP Standard Preamplifier with Microdot Connector, Very Short

The GRAS 26CS 1/4" Preamplifier is a very small preamplifier optimized for use with prepolarized condenser microphones. It is a robust unit and uses a CCP power supply. It has a very low inherent noise level, a large dynamic range and a frequency response from below 2 Hz to above 200 kHz...

GRAS 26CT 1/4" CCP Standard Preamplifier with SMB Connector, Very Short

Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.45 dB
Special feature: For confined spaces

GRAS 26CT 1/4" CCP Standard Preamplifier with SMB Connector, Very Short

The GRAS 26CT 1/4" Preamplifier is a very small preamplifier optimized for use with prepolarized condenser microphones. It is a robust unit and uses a CCP power supply. It has a very low inherent noise level, a large dynamic range and a frequency response from below 2 Hz to above 200 kHz...