Feature

●Adopts original TI-NE5532 classic opamp, transistor extended current circuit, using 1300mA large current output transistor that operates on Class A status, ultra low distortion, and the sound is warm and delicate
●Innovative circuit design, adopting DC 5-20V wide input working voltage, amplifier circuit can always operate at 26V high voltage and background noise indexes are excellent
●Plug-In Opamp Socket Design Upgrades a variety of optics amplifiers
●Strong drive power makes it easy to drive most high impedance headphones such as: HD580 / HD600 / HD650 K701 / K702 / Q701 DT880 / T70 / T90 SR225 / SR325 / RS1e
●Note: Power adapter not included. We recommend using the original high quality power adapter that is 5W or larger. For example, if you use DC 5V, the current must be more than 1A. If you use DC 12V power adapter, you will need more than 0.5A


Description

Audio Input: Stereo L/R RCA
Audio output: 6.35mm headphone jack (with 6.35mm to 3.5mm adapter)
Output power:? 1300mW (32Ω)
Matching headphone impedance: 18-600Ω
Frequency response: 20-30KHz
Signal-to-Noise Ratio:? 110DB
Maximum Output Amplitude: 25V
Input Voltage: DC 5-20V
Dimensions (W x D x H): 2.6 x 3.7 x 1.2 inches (67 x 93 x 30 mm)
Net Weight: 169g
Package Weight: 7.5 oz (210 g).

Package Contents
1 x U3 headphone amplifier.
1 x USB to DC cable
1 * 6.35mm-3.5mm headphone adapter