Indicates how "easily" the microphone transmits its signal to the equipment (mixer, sound card, amplifier). It is expressed in Ohms (Ω).

• Low impedance (≤ 600 Ω): Stable signal, less noise, ideal for professional equipment and long cable runs.
• Medium impedance (600 – 1,000 Ω): Good balance, common in live and general use.
• High impedance (> 1,000 Ω): More sensitive to loss and noise, usually found in older or specialized equipment.

The sensitivity of a microphone indicates how strong the signal it produces is when recording a sound. It is measured in mV/Pa or dBV/Pa.

• High sensitivity: The microphone can capture very low sounds, but it may be more sensitive to ambient noise.
• Low sensitivity: It records louder sound sources without distortion, but requires more amplification from the preamp.

In general, condenser microphones have higher sensitivity than dynamic ones.

Indicates the difference between the useful signal and the microphone's noise. The higher the value in dB, the clearer the sound. A microphone with a low SNR may sound “noisy,” especially in quiet environments or when recording low-volume sounds. On the other hand, a high SNR means that noise is minimal compared to the sound you want to capture, offering a more professional, clear, and detailed result—ideal for studio, vocals, or high-quality recording.

• 35 – 60 dB (Low SNR): Noticeable noise is present. Suitable for casual use or loud sources.
• 60 – 90 dB (Medium SNR): Good signal-to-noise balance. Suitable for live performances and general use.
• 90 – 110 dB (High SNR): Very clear signal with minimal noise. Ideal for studio, vocals, and high-quality recording.