AKG 2785M10010 - Complete preamplifier board for C3000 / C3000B microphone

AKG 2785M10010 - Complete preamplifier board for C3000 / C3000B microphone

The AKG 2785M10010 is the complete preamplifier board ( Main board, compl. ) for the AKG C3000 and AKG C3000B large diaphragm condenser microphones. This original ( OEM ) replacement replaces the microphone's main electronics responsible for impedance matching, gain and internal functions such as the bass filter and attenuator (-10 dB) , returning factory electrical performance after breakdowns due to humidity, impacts or component failure.

Documented by AKG as item 7 in the exploded view, the 2785M10010 maintains direct compatibility with both the C3000B and the C3000 (previous version), respecting connectors and mounting points. The exploded view lists the switches (pad/filter), contact strip , and XLR insert as related parts, which can be replaced independently depending on the intervention. Installation must be carried out by qualified technical personnel to ensure proper body closure and electrical adjustment of the assembly.

Main features

• Original AKG replacement for C3000 and C3000B.
• Official designation: Main board, complete (assembled preamplifier board).
• Board functions: capsule preamplification, 500 Hz / −6 dB per octave bass filter, −10 dB pad , low impedance balanced output (<200 Ω) .
• Electrical Compatibility: 12–48 V DC phantom power (typical consumption 1.8 mA at 48 V) via XLR connector.
• Exact fit to the microphone body with factory-tested tolerances and wiring.
• Scope of delivery: assembled preamplifier board (does not include cartridge, housing, switches or XLR connector unless purchased as separate parts).

Product benefits

• Restores the original C3000/C3000B specifications for sensitivity, self-noise, and output level.
• Reduce downtime in studios, rentals, and live settings by replacing the main electronic assembly with an OEM part.
• Documented repair according to the official parts list, facilitating maintenance traceability.
• Cross-compatibility between C3000 and C3000B, useful in mixed fleets.

Frequently Asked Questions

• Does it include the switches, contact strip, or XLR insert? Not by default. The parts list includes the following: Switch (ref. 0040E01830), Contact strip, 8-pole (ref. 0018E08200), and XLR insert (ref. 0016E03460), which are purchased separately when necessary.
• Does it work for both the C3000 and C3000B models? Yes, the 2785M10010 is documented for both models.
• Does it affect the microphone's sound? Yes; since it's the internal preamplifier, replacing it returns the electrical behavior and functions (pad/filter) to factory settings .
• Is calibration necessary after replacement? It's not usually required; simply follow the service procedure and check for continuity/connections.

Description for projects

Assembled preamplifier board for AKG C3000/C3000B microphone; reference 2785M10010 ; exploded view position 7 ; functions: preamplification, low-pass filter 500 Hz (−6 dB/oct), pad −10 dB; output <200 Ω; phantom power 12–48 V ; delivery: 1 unit; related parts: switch 0040E01830, contact strip 0018E08200, XLR insert 0016E03460.