Kat Baxter wholesale sales language lab headphones

Technical parameters: First, the headset parts: 1. Impedance (Ω): 8,16,32,40,80 2. Sensitivity: 110dB ± 3dB 3. Frequency range: 20Hz-20KHz 4. Rated power: 100mW Second, the microphone section: 1. Impedance (Ω): 100,200 (dynamic), 1.8K (electret) 2. Sensitivity: -63dB ± 3dB (moving coil), - 48dB ± 3dB (electret) 3. Directional: single to (moving coil), omnidirectional (electret) 4. Frequency response: in line with GB / T14198-93 requirements Third, the drive unit: 40mm diameter speaker four films, plug: Φ3.5mm V. Connection: natural state long 1.5m, can spiral elongation to 2.5m, high quality, anti-blocking cord Note: Please provide users choose the type of microphone, headphone impedance and the impedance of the movement, series, parallel and plug connection. Product Description: Widely used in supporting language labs, multimedia classrooms, computer room, computers and all kinds of stereo equipment. Has a beautiful appearance, high sensitivity, frequency response and good, loved by the majority of teachers and students; microphone into moving coil (YD type) and (YZ-type) of two electret; anti-electromagnetic interference technology for the domestic initiative, the products have been designated the Ministry of Education as a national language learning system supporting free products, in similar products only identified by the Ministry of Education. Features: 1. the company is for students to design an economical, durable, easy to use language lab headphones. 2. innovative designs, elegant, comfortable to wear, can be folded, strong and durable. 3. The internal circuitry materials research, production of fine, clear sound, the sound loud and clear, high sensitivity, good selectivity, is an excellent choice of foreign language listening test.