Audio-Technica ATH-ANC70 QuietPoint Headphones The Audio-Technica ATH-ANC70 QuietPoint utilizes advanced Active Noise Cancellation circuitry that cancels up to 90% of ambient noise. You can listen to spectacular pure audio while in noise-cancelling mode. Its adjustable headband and swiveling earcup design let you keep the headphones in small bags for convenient portability. TECHNICAL SPECS: Driver: 40mm, active noise-cancelling Frequency Response: 15~25,000Hz QuietPoint Active Noise Reduction: Up to 20dB Sensitivity: 104dB Impedance: 570 Ohm Battery: AAA alkaline or rechargeable Battery Life: Up to 40 hours, typical Cable: Detachable 3.9' cable with 1/8" stereo mini-plugs Accessories: 1/4" Stereo Adapter, Airline Adapter; AAA Battery; Carrying Case Also Comes With: FiiO A3 Portable Headphone Amplifier The FiiO A3 portable headphone amp offers fully discreet bass circuit design. Turn ON the Bass to boost the bass effect without affecting the overall sound field. When the Bass OFF is engaged, it bypasses the bass circuit and decreases the noise floor/interference. TECHNICAL SPECS: Drive Ability: 16~150 Ohm Frequency Response: 10Hz~90kHz Channel Imbalance: Less than 0.3dB Output Impedance: Less than 0.02 Ohm Volume Control: TOCOS Potentiometer THD: Less than 0.006% (1 kHz) SNR: Greater than 108dB Crosstalk: Greater than or equal to 72dB (GAIN=H) Gain: -3.8dB (GAIN=L) | 11.7dB (GAIN=H) I/O: 3.5mm stereo jack Recommended Power Input: DC 5V 1A Blucoil Audio 6-Feet Extension Cable The Blucoil extension cable instantly adds 6 feet to your earphones/headphones. It is equipped with gold-plated universal 3.5mm male and female tips. Fully compatible with portable amps, smartphones, PCs, and more! Grab this Audio-Technica bundle today and receive additional 2-Pack AAA Batteries for your ATH-ANC70 headphones!