Mojave MA-100 Small-diaphragm Tube Condenser Microphone

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Mojave MA-100 Small-diaphragm Tube Condenser Microphone

Small Diaphragm - Big Sound!

Vacuum Tube: NOS JAN 5840 pentode wired as triode

The MA-100 is a small diaphragm, vacuum tube condenser microphone with interchangeable cardioid and omnidirectional capsules. The latest in a lineage of successful microphone designs by David Royer, the MA-100's 'cathode follower' design allows use on high SPL instruments such as drums and guitar amplifiers, as well as the more common applications of a small diaphragm, vacuum tube condenser microphone, such as acoustic instruments, cymbals, stereo pairs and pianos.

Featuring hand selected 3 micron capsules, high quality Jensen audio transformers and military-grade JAN 5840 vacuum tubes, the MA-100 performs at a level reminiscent of some of the best loved classic small diaphragm tube condenser microphones. The MA-100 power supply can be set for either 115v or 230v via an external switch. Each MA-100 microphone, power supply and cable set is burned in for 24 hours, carefully tested and evaluated, then packaged in its protective case.

Why choose a small diaphragm microphone? Because small diaphragm microphones offer some distinct advantages over their larger brethren: => More consistent polar pattern, Better transient response, Ease of placement

Why choose an MA-100? => Extended low-frequency response, High SPL handling capability - try putting your large-diaphragm mic on a snare drum!

Interchangeable cardioid and omnidirectional capsules
Hand-selected 3-micron capsules
Jensen audio transformer
Military grade JAN 5840 vacuum tube
External switchable power supply voltage
Ultra clean signal path
High SPL handling capability

Recommended applications:
Acoustic Instruments
Guitar Amplifiers
Stereo Pairs (X/Y, MS, etc.)
Decca Tree
Orchestral Recording
Choral Recording
Voice-overs and Broadcast


Capsules: Interchangeable Cardioid and Omnidirectional
Diaphragm: .8" (20.5 mm) diameter
Diaphragm thickness: 3-micron
Frequency Response: 20 Hz - 20 kHz +/- 3 dB
Sensitivity: -39 dB re.1V/pa +/- 1.5 dB
Maximum SPL: 130 dB
Distortion: head amp only, not to exceed .4% @ 140 dB SPL
Self Noise: 14 dB nominal, not to exceed 16 dB (A weighted)
Impedance: 450 ohms, transformer balanced (Jensen)
Vacuum Tube: NOS JAN 5840 pentode wired as triode,
Power Requirements: 100-120 VAC; 220-240 VAC, 50 or 60 Hz.
Power consumption approx. 10 watts
Carrying case with microphone, power supply, shock mount
and cables: 7 lbs.
Carrying Case: 14”x11”x4”
Microphone: 5.5”x.75”, weight 4.5 oz