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DPA 4055 Condenser Kick Drum Microphone  From DPA (B&K)

Puts you in charge of the sound

DPA Microphones (Bruel & Kjaer)


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No more pre-tailored sound! Capture the true sound of the bass drum - 4055 Kick Drum Microphone

Designed to kick the bass to the next level, the 4055 takes the traditional concept of a kick drum mic and turns it on its head – no more pre-tailored sound – now you can take sound design back into your own hands.   What makes the 4055 stand out from the competition is that it delivers the renowned DPA sound, clarity and linear frequency response, both on axis and off axis.

  • Signal Chain
    • DPA 4055 Condenser Kick Drum Microphone

Manufacturer's Description from DPA (B&K)

  • Picks up the clear, true sound of the kick drum
  • Flat frequency response so you can shape the sound your way
  • Built tough to withstand rough use on the live stage
  • Asymmetric design for easy placement inside or outside

Designed to kick the bass to the next level, the 4055 takes the traditional concept of a kick drum mic and turns it on its head - no more pre-tailored sound - now you can take sound design back into your own hands.

What makes the 4055 stand out from the competition is that it delivers the renowned DPA sound, clarity and linear frequency response, both on axis and off axis. Its low frequency response and dynamics are superb and result in a tight, natural, well-defined sound - the best low-end with detailed mids and highs.

The 4055 is one of the only kick drum mics that is not sonically pre-tailored to fit a traditional sound in a specific genre. Its performance allows a professional sound designer to create the exact sound s/he is listening for - regardless of the music genre. Want more attack? Slide the 4055 into the bass drum and point it directly at the beater. For a super-low-end sound, place the 4055 at the hole, just on the outside of the front head. Here, the level of sub and lows are represented the most.

Not only does the position inside or outside the kick drum give you different sounds but working with the angles of the microphone just outside the hole will deliver nuances of the drum sound. No matter what sound preference you have, the 4055 captures the true sound of a kick drum, whether it is used in classic, jazz, rock or any other genre.

The 4055 is placed in a large, robust housing and there is wind damping foam just in front of the capsule, behind the grille. A specially-designed shock mount also suspends the capsule inside the housing to avoid vibrations from the stage. The shock mount together with the extra wind damping ensures that the 4055 captures only the source.

The 4055 is easy to position, both inside and outside the drum. Its unique asymmetric design makes it quite easy to place the mic through the drum hole without ripping the front resonator skin.



The capsule is like most other DPA mics, a PRE-POLARIZED CONDENSER microphone. Most traditional kick drum mics are dynamic.

There is a misconception in the industry that only dynamic microphones can handle loud SPL, but this is not true. With the technology used in DPA mics, we can easily handle the sound in front of a kick drum, even though we have measured more than 156 dB SPL (when kicked very hard).


DYNAMIC microphones

  • Built like an inverted loudspeaker with a diaphragm fixed to a coil, moving over a magnet.


  • Low cost
  • Simple construction
  • Low noise (often)


  • Heavy construction » less precision » less high-frequency information


CONDENSER microphones

Built with a conductive diaphragm stretched over, but not touching, a charged backplate.


  • High level of details
  • Wide frequency range
  • Narrow tolerance


  • Higher price
  • Relies on power



After testing several different characteristics, we found that the optimal pattern for this type of mic is an OPEN CARDIOID. This is a new characteristic for DPA, placing the pick-up pattern between a cardioid and wide cardioid. Although most mics used on the kick drum exhibit a cardioid pick-up pattern, during our blind test of several characteristics, we found that the wider pickup pattern offered the best sound.



The 4055 has fewer issues with feedback than other traditional kick drum mics. During development, we tested the mic at a large concert venue and had stage monitors, drum fills and front of house PA playing extremely loud (> 130 dB SPL). We tried to drive the mic into feedback, but we never heard any (but things started to fall from the ceiling that hadn’t seen daylight for years). 

DPA Microphones (Bruel & Kjaer)

About Manufacturer

DPA Microphones A/S is a leading manufacturer of high quality condenser microphones and microphone solutions for professional applications in studio, broadcast, theatre, video/film, houses of worship, teleconference and sound reinforcement environments.


Directional pattern Open Cardioid

Principle of operation Pressure gradient

Cartridge type Pre-polarized condenser

Frequency response 20 Hz - 20 kHz

Effective frequency range ±2 dB, at 20 cm (7.9 in) 40 Hz - 18 kHz with a 6 dB soft boost at 10 kHz

Sensitivity, nominal, ±2 dB at 1 kHz2 mV/Pa; -54 dB re. 1 V/Pa

Equivalent noise level, A-weighted Typ. 27 dB(A) re. 20 µPa (max. 29 dB(A))

Equivalent noise level, ITU-R BS.468-4 Typ. 39 dB (max. 41 dB)

Distortion, THD < 1% 156dB SPL RMS, 159 dB SPL peak

Dynamic range Typ. 132 dB

Max. SPL, THD 10% 164 dB SPL peak

Rated output impedance 380 Ω

Minimum load impedance 2 kΩ

Cable drive capability 100 m (328 ft)

Output balance principle Impedance balancing with Active Drive

Common mode rejection ratio (CMRR) > 55 dB

Power supply (for full performance) P48 (Phantom Power)

Current consumption 2.0 mA

Connector XLR-3M. Pin 1: shield, Pin 2: signal + phase, Pin 3: - phase

Color Matte black

Weight 241 g (8.5 oz)

Microphone diameter 57 mm (2.24 in)

Capsule diameter 17 mm (0.67 in)

Microphone length 132 mm (5.19 in)

Maximum output voltage, RMS 9.75 V

Polarity +V at pin 2 for positive sound pressure

Temperature range -40°C to 45°C (-40°F to 113°F)

Relative humidity (RH) Up to 90%