| Attribute | Gauge Microphones ECM-47 × | Studio Projects TB1 × |
|---|---|---|
| Diaphragm Diameter (mm) | - | 25 |
| Pickup Pattern |
|
|
| Brand | Gauge Microphones | Studio Projects |
| Range (Hz) | 20 - 20,000 | 20 - 20,000 |
| Sensitivity (mV/Pa) | 16 | 27 |
| Diaphragm Gauge (micron) | 6 | 3 |
| Capsule Diameter (mm) | 35 | 34 |
| Sound Pressure Level (SPL) (dB) | 135 | 128 |
| Impedance (Ohm) | 200 | 250 |
| Self-Noise (dB) | 18 | 16 |
| SPL/Self-Noise Ratio | 7.5 | 8 |
| Interfaces |
|
|
| Includes Tube Power Supply | + | + |
| Name | Gauge Microphones ECM-47 | Studio Projects TB1 |