Microphone Preamplifiers

A condenser microphone must be combined with a preamplifier to provide impedance conversion, some filtering, and the capability to drive relatively long cables without significant signal degradation.

Brüel & Kjær offers a large selection of robust and acoustically optimised preamplifiers that allow operation in a wide range of environmental conditions. The high output current capability of our preamplifiers allows the use of extremely long cables, even with high sound pressure levels present at high frequencies. Preamplifiers are available in both ½- and ¼-inch dimensions for direct fit with the most used microphone cartridge sizes. For 1-inch and 1/8-inch, cartridge adaptors are available.

Shows 1 - 10 of 11

		Product No

		2660 1-inch Microphone Preamplifier, Very Low Noise, 20 dB gain, for Microphone Type 4179


		2669 ½-inch Microphone Preamplifier for use with Type 4232 The preamplifier has a very high input impedance presenting virtually no load to the microphone. The high output voltage together with an extremely low inherent noise...


		2669-B 1/2-inch Microphone Preamplifier, tapered, including cable AO-0428, B&K connector The preamplifier has a very high input impedance presenting virtually no load to the microphone. The high output voltage together with an extremely low inherent noise...


		2669-B 1/2-inch Microphone Preamplifier, cylindrical, LEMO 1B connector, no cable The preamplifier has a very high input impedance presenting virtually no load to the microphone. The high output voltage together with an extremely low inherent noise...


		2670 1/4-inch Microphone Preamplifier, integral 2m cable with 7-pin LEMO plug The housing of Falcon Range 1/4-inch Microphone Preamplifier Type 2670 is made completely out of stainless steel and is supplied with a 2 m fixed cable terminated with...


		2671 DeltaTron Microphone Preamplifier for 1/2-inch prepolarized microphones, without cable DeltaTron‚ Microphone Preamplifier Type 2671 enables you to make acoustical measurements with a DeltaTron‚ input module. You can connect ½-inch prepolarized...


		2673 1/2-inch Microphone Preamplifier with insert voltage facility Type 2673 consists of a high impedance input stage and an output stage giving a low output impedance for driving long cables and the Driven Guard surrounding the input...


		2683 Dual Preamplifier for Sound Intensity Probes Type 3595 is a two-microphone probe kit for measuring sound intensity. Specially designed for use with 2260 Investigator™ Hand-held Sound Intensity System, the probe...


		2695 1/2-inch Microphone Preamplifier ½-inch DeltaTron® Microphone Preamplifier Type 2695 enables you to make acoustical measurements with a DeltaTron input module. Prepolarized microphones can be...


		2697 Differential Amplifier, DC Coupled, No Gain Differential Amplifiers Types 2697 and 2697 A are very compact, and operate over a wide range of temperature, humidity and other environmental conditions.Differential...