Mojave MA100, small diaphragm, vacuum tube condenser mic with interchangeable cardioid and omnidirectional capsules. Design by David Royer. Allows use on high SPL instruments such as drums and guitar amps. Hand-selected 3-micron capsule, Jensen audio transformer, Military grade JAN 5840 vacuum tube, External switchable power supply voltage, Ultra clean signal path, Recommended applications: Acoustic Instruments, Drums, Guitar Amplifiers, Piano, Stereo Pairs (X/Y, MS, etc.), Decca Tree, Orchestral Recording, Choral Recording, Voice-overs and Broadcast, Percussion. FREQUENCY RESPONSE: 20 Hz - 20 kHz, ±3dB, SENSITIVITY: -37dB re 1V/pa, MAX. SPL: 120dB, DISTORTION: head amp only, not to exceed .4% @ 140 dB SPL, SELF NOISE: Not to exceed 16dB, IMPEDANCE: 450 ohms, POWER REQUIREMENTS: 100-120VAC; 220-240VAC, 50 or 60 Hz. Power consumption approx. 10 watts. Incl. carrying case, power supply, shock mount and cables.