| Attribute | Telefunken Elektroakustik R-F-T AK47 Mk II × | Soundelux U99B × |
|---|---|---|
| Brand | Telefunken Elektroakustik | Soundelux |
| Name | Telefunken Elektroakustik R-F-T AK47 Mk II | Soundelux U99B |
| Sensitivity (mV/Pa) | 14 | 21 |
| Pickup Pattern |
|
|
| Diaphragm Diameter (mm) | 25 | 25 |
| Range (Hz) | 20 - 20,000 | 20 - 20,000 |
| Impedance (Ohm) | 200 | 200 |
| Includes Tube Power Supply | + | + |
| Self-Noise (dB) | 16 | 17 |
| Sound Pressure Level (SPL) (dB) | 132 | 130 |
| SPL/Self-Noise Ratio | 8.25 | 7.65 |
| Max Diameter (mm) | 45 | 52 |
| Interfaces |
|
|
| Weight (g) | 765 | 763 |
| Diaphragm Gauge (micron) | 6 | 6 |
| Capsule Diameter (mm) | 32 | - |
| Length (mm) | 241 | 229 |