When working offline, you can use a sound card, which is powered from the laptop, but the best solution in this situation will be connected to the network and use an external mixing console. Fit almost any cheap mixer that has mic inputs and outputs of the recording stream. Not be superfluous to the presence of three-band EQ on the mixer, low pass filter (hf filter / low cut), regulator of the sensitivity (gain), headphone volume control, as well as LEDs to indicate signal level.

As for the microphone, it must be dynamic. In the recording studio condenser microphones can be used, since they have greater sensitivity and will require a special room with no soundproofing (they capture a lot of extraneous noise). To fix the microphone in a fixed position, use right microphone stand. The holder must be suitable for a microphone (often suitable holders are supplied with a microphone). Stance is necessary because if the performer will keep the microphone in hand, may suffer the recording quality.

The presence of headphones allows you to listen to the executor and the soundtrack, and himself. For this purpose the best suited headphones is closed-type. Using headphones open or partially closed, is not desirable because of the sound will penetrate the entry into the microphone and even can produce echo effect.

The importance of uniformity of response is that the sound from the headphones can be accurately matched with the real signal, in which case we can say that the headphones sound natural and not stained with the sound. Choose headphones to your own, choosing the appropriate hearing, as each manufacturer on their own measures and plots the frequency response for its products.