Earthworks QTC30 Omnidirectional Condenser Microphone
The QTC30 is a small-format omnidirectional condenser that delivers Earthworks reference accuracy where a slimmer mic is needed. Its ruler-flat 3 Hz to 30 kHz response is uniform across all frequencies, so nothing is exaggerated or attenuated, and its fast impulse response captures transients cleanly - ideal for acoustic instruments, piano, room, and measurement.
It shares the sensitivity and self-noise of the larger QTC bodies, handles 140 dB SPL, and runs on 24 to 48 V phantom over XLR. Offered as a single mic or a factory-matched pair for stereo capture that depends on two identical microphones - select above.
| Transducer Type | Condenser |
|---|---|
| Polar Pattern | Omnidirectional |
| Frequency Response | 3 Hz - 30 kHz, +1/-3 dB |
| Sensitivity | 34 mV/Pa (-29 dBV/Pa) |
| Self-Noise | 20 dB SPL (A-weighted) |
| Maximum SPL | 140 dB |
| Power / Connector | 24 - 48 V phantom (10 mA); XLR |








