● Conform to IEC 60914 international standard
● One D6237 contains 2 ID, one ID can connect one microphone unit & one voting unit
● Support cascaded linkage and loop connection
● Support plug-and-play, easy to use
● 8-pin DNC standard jack for control signal, Rj45 jack for Mic and voting units
● Power supply from the host/extender, working power DC 24V
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| Model | D7221A/D7222A | |
| Structure Type | Desktop | |
| Effective Frequency Range of Gain Limit (±3dB) | MIC A to MIC B | 50Hz-14kHz |
| Host LINE to MIC | 30Hz-18kHz | |
| MIC to Host LINE | 40Hz-16kHz | |
| Speaker Power | 1.5W | |
| Static Power Consumption | <8W | |
| Maximum Power Consumption | 5W | |
| SNR | >75dB | |
| Crosstalk Attenuation | >80dB | |
| Harmonic Distortion | <0.5% | |
| Headset Output | 9dBu, 8-32Ω, 3.5mm | |
| Working Power (Battery) | Host +48V power supply or +48V PoE switch | |
| Unit Interface | Dante network interface | |
| MIC | Microphone Type | Electret cardioid condenser |
| Sensitivity | -30dBV/pa | |
| Input Impedance | 2kΩ | |
| Equivalent Noise | 20dB(SPL) | |
| MAX. SPL. | 125dB(THD<3%) | |
| Package Dimensions | 500×200×180 mm | |
| Machine Dimensions (W×D×H) | 84×80×145mm | |
| Gross Weight | 1.25kg | |
| Net Weight | 0.75kg | |
| Model | D7221A/D7222A | |
| Structure Type | Desktop | |
| Effective Frequency Range of Gain Limit (±3dB) | MIC A to MIC B | 50Hz-14kHz |
| Host LINE to MIC | 30Hz-18kHz | |
| MIC to Host LINE | 40Hz-16kHz | |
| Speaker Power | 1.5W | |
| Static Power Consumption | <8W | |
| Maximum Power Consumption | 5W | |
| SNR | >75dB | |
| Crosstalk Attenuation | >80dB | |
| Harmonic Distortion | <0.5% | |
| Headset Output | 9dBu, 8-32Ω, 3.5mm | |
| Working Power (Battery) | Host +48V power supply or +48V PoE switch | |
| Unit Interface | Dante network interface | |
| MIC | Microphone Type | Electret cardioid condenser |
| Sensitivity | -30dBV/pa | |
| Input Impedance | 2kΩ | |
| Equivalent Noise | 20dB(SPL) | |
| MAX. SPL. | 125dB(THD<3%) | |
| Package Dimensions | 500×200×180 mm | |
| Machine Dimensions (W×D×H) | 84×80×145mm | |
| Gross Weight | 1.25kg | |
| Net Weight | 0.75kg | |
| Model | D6221/D6222 | |
| Structure and Type | Desktop | |
| Output frequency response | 45Hz-18kHz（-3dB） | |
| Speaker Power | 1.5W | |
| Static power consumption | <1W | |
| Max. power consumption | 2W | |
| SNR | >80dB | |
| Crosstalk Attenuation | >80dB | |
| Harmonic distortion | <0.5% | |
| Headphone Output | 9dBu, 8-32Ω, 3.5mm | |
| Working Power Supply | DC 24V power supply | |
| Port on the unit | 8pin DIN socket | |
| Microphone | Type of microphone | Electret, heart-shaped, condenser type |
| Frequency response | 40Hz-20kHz（-3dB） | |
| Sensitivity | -45dBV/pa | |
| Input impedance | 2kΩ | |
| Equivalent Noise | 20dB (SPL) | |
| Max SPL | 125dB (THD<3%) | |
| Model | D7223A/D7224A | |
| Structure Type | Desktop | |
| Effective Frequency Range of Gain Limit (±3dB) | MIC A to MIC B | 50Hz-14kHz |
| Host LINE to MIC | 30Hz-18kHz | |
| MIC to Host LINE | 40Hz-16kHz | |
| Speaker Power | 1.5W | |
| Static Power Consumption | <8W | |
| Maximum Power Consumption | 5W | |
| SNR | >75dB | |
| Crosstalk Attenuation | >80dB | |
| Harmonic Distortion | <0.5% | |
| Headset Output | 9dBu, 8-32Ω, 3.5mm | |
| Working Power (Battery) | Host +48V power supply or +48V PoE switch | |
| Unit Interface | Dante network interface | |
| MIC | Microphone Type | Electret cardioid condenser |
| Sensitivity | -30dBV/pa | |
| Input Impedance | 2kΩ | |
| Equivalent Noise | 20dB(SPL) | |
| MAX. SPL. | 125dB(THD<3%) | |
| Package Dimensions | 500×200×180 mm | |
| Machine Dimensions (W×D×H) | 84×80×145mm | |
| Gross Weight | 1.25kg | |
| Net Weight | 0.75kg | |
| model | D7323/D7324 | |
| The structure type | Desktop | |
| Effective frequency range of gain limitation (± 3dB) | Unit A to Unit B. | 130Hz-14kHz |
| Host to unit line | 130Hz-14kHz | |
| Unit to host line output | 50Hz-14kHz | |
| Speaker power | 1.2W | |
| Static power consumption | <3.2W | |
| Maximum power consumption: | 4.5W | |
| Signal-to-noise ratio | >81dB | |
| Crosstalk attenuation | >80dB | |
| Harmonic distortion | <1% | |
| Headphone output | 9dBu, 8-32 Ω, 3.5mm | |
| Operating Power Supply(Battery Pack) | DC5V is charged by Type-C port (more efficient charging in off state) | |
| Microphone type | Elector cardiac capacitive type | |
| Sensitivity | -30dBV/pa | |
| input resistance | 2kΩ | |
| Equivalent noise | 20dB(SPL) | |
| Maximum sound pressure level | 125dB(THD<3%) | |
| Package dimensions: | 485×280×120mm (with two in a bpx) | |
| Machine Dimensions (W × D × H) | 175×133×46mm | |
| Gross weight | 2.0kg | |
| Net weight | 0.6kg | |
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