Portable, powerful 7W digital voice amplifier that provides a high-quality sound for voice transmissions and a very high level stability in relation to its ultra-compact size. It is suitable for general mobile speech applications due to versatile wearing options, e.g. lectures and training sessions, sales events. With the latest technology of built-in lithium rechargeable batteries, digital amplification and a perfect workmanship of high quality, it is even suitable as a miniature solution for external audio sources (MP3 players and laptops) due to the additional line input. The amplifier comes with one electret headband microphone HSE-700, one mini electret microphone ECM-700, one digital active speaker, one microphone extension cable, one line connection cable, one plug-in charger, two clips, one waist strap, one carrying strap and one transport bag. Frequency range: 20 Hz-20 kHz. THD: 0.3%. Max. SPL: 83 dB. Dimensions: 85 x 130 x 26 mm. Weight: 675 g.