D9 Sound Card with BM800 Microphone Kit

The D9 sound card with the BM800 condenser microphone is sold as a kit, and this page describes that kit as its own listing. It is not the same listing as the D9 external sound card on its own, even though the manufacturer publishes the same specification block for both. Keeping the two listings separate matters for ordering: a buyer who needs a microphone as well as a card orders the kit, while a buyer who already owns a microphone orders the card alone.

The kit's stated uses cover singing and recording, live streaming, computer gaming, home use, karaoke, and stage performance. That is a wide list, and it reflects what a sound card does: it gives a microphone user control over volume, echo, monitoring, and the mix of voice with backing audio, in any setting where voice goes out live or is recorded with accompaniment.

The published specification block starts with frequency response from 100Hz to 20kHz and a signal-to-noise ratio of more than 65dB. Those two figures describe a card that covers the voice range and keeps its own noise below the signal by a stated margin. For a singer or a streamer, the practical meaning is a voice that stays clear over backing audio, without a hiss that grows as the volume rises.

Power and battery figures follow. The battery is 3.7V at 1500mAh, the shutdown current is 50 microamperes, and charging is DC 5V at 1A. A battery-powered card goes where mains power does not reach, which suits outdoor live sessions and rooms with few outlets, at the cost of a run time that must be planned. The shutdown current figure matters for storage: a card left unused should not drain itself flat quickly.

Output and input figures complete the block. Headphone output is 320 ohms at 10mW times two, which describes the monitoring output the user hears. Accompaniment input is up to 600mV, which is the backing track input. Microphone input is minus 42dB with a tolerance of 3dB, which describes the microphone level the card expects. A buyer matching an existing microphone to this card should check that microphone's output against this input figure.

No minimum order, price, or delivery time is published for this kit, and none is stated here. Certificates are available upon request. A buyer ordering the kit should name it as the D9 with BM800 kit, not as the standalone card, so the microphone is included in the order. Any question about which microphones suit the card's input should be raised in the inquiry.

Ordering the kit rather than the standalone card is a decision about completeness. A buyer who orders the kit receives a microphone with the card, which means the setup can be used immediately without sourcing a microphone separately. A buyer who orders the standalone card must already own a microphone that matches the card's input, or must order one separately, and the total cost and delivery of the two routes should be compared before deciding.

For live sessions, the kit's value shows in the first minutes of use. The microphone connects to the card, the headphones connect to the card, and the backing audio connects to the card, so the whole chain is in one place. A performer who can set up that chain quickly spends less time troubleshooting and more time performing, which is the practical reason kits exist alongside standalone cards.