Advanced Audio CM47fet/CE FET Condenser Microphone

The Advanced Audio CM47fet/CE came about in response to requests to retrofit the CM47fet with the AK47 capsule, to give it the more traditional, vintage sound of the U47fet but with the added omni feature.

The Advanced Audio Custom Edition CM47fet provides a sonic response similar to the original U47fet. It has a smooth presence but sounds slightly warmer or "darker" than the CM47fet. It has become a favorite in front of the kick drum, on upright bass, trumpet, trombone, in front of guitar and bass amps where a warm but present sound is required.

The CM47fet circuit is based on the extended headroom of the famous Neumann U47fet design. It features the AK47 capsule which is a true reproduction of the original K47 capsule made in the late 50s. The two-stage Class A amplifier is coupled into a transformer balanced output. It also features a de-emphasis circuit that reduces sibilance but gives it the presence of a U47/U47fet with incredible smoothness. The CM47fet/CE has been optimized for close miking applications on loud sound sources so that it will not overload even economic transformerless preamplifiers. The CM47fet/CE also features passive true cardioid operation like the original U47/U48 and U47fet microphones. It can also be switched to omni operation for room miking duties or when the need to reduce any proximity effect is required.

Features:

• 2mm 6-micron dual-diaphragm K47 type capsule
• Class A FET two-stage circuit with de-emphasis and extended headroom
• 100 Hz internal bass roll-off switch
• Switched -10 dB pad
• Impedance: <200 ohm (load impedance <1.2K)
• Frequency response: 25 Hz to 20 kHz ±3 dB
• Noise: <16 dB (A-weighted)
• Distortion: 0.5% @ 131 dB, 141 db with -10 db pad engaged
• 48V requirement
• Robust shock mount
• Aluminum road case