The AT-HA40USB is a headphone amplifier which is designed to greatly improve the sound of your music. It’s powered via USB and its small compact body makes it the perfect portable headphone amplifier that offers high definition sound.
Compatible with 24bit/96kHz, allowing you to enjoy high resolution sound sources, which greatly exceeds CD quality music
Condenserless circuits helps reproduce thick bass
Light compact body ideal for portability
User friendly USB bus power – does not require AC power outlet
Selectable outputs from digital optical or analog line output
Computer Interface
USB 2.0 interface
Sample Rate
32 kHz, 44.1 kHz, 48 kHz, 96 kHz
Frequency Response
10 Hz ~ 40 kHz (at -3dB, 96 kHz)
Maximum Output Power
Headphones : 45 mW + 45 mW (at 32Ω, 10% T.H.D.)
Total Harmonic Distortion
Headphones: Less than 0.07% (at32Ω, 20 mW output);
Line Output: Less than 0.02% (at 0 dBV, 1 kHz)
Signal-To-Noise Ratio
Headphones: Greater than 95 dB;
Line Output: 0.8 Vrms
Audio Output
3.5mm stereo mini-jack
Optical Digital Output
Compatible sampling frequency : 32 kHz, 44.1 kHz, 48 kHz, 96 kHz
Compatible format S/PDIF : PCM audio
Dimensions
H25mm x W62mm x D57mm (excluding protruding parts)
Weight
55g
Accessories Furnished
USB (2.0) cable 1.0m