Features:

A970 is a high performance portable headphone amplifier， built-in high performance power processor and a power amplifier

Can be connected with various audio player and various brands of mobile phone， the audio signal processing， amplification， output can drive all kinds of high resistance to headphones

So as to raise power volume amplification， improve the sound plays a driving role.

This product is simple to use， no special operation and use of demand.

The use of internal circuit employing capacitance output forms， which can effectively avoid the internal circuit fault on expensive headphones produced impairment

In an insert earphone， audio process may generate impact sound ( the output of electrolytic capacitor internal charge acting on the headphones and generated)， the shock due to less energy， the earphone without adverse effects

Use recommended for following operation can effectively reduce the impact of noise : the first stage volume knob to the minimum， the sound and the amp connection， first open source， then open the amp， 5-10 seconds after the insert earphone， audio is often play according to the need to adjust the volume knob to the right place.

This product has low battery indication function in actual use， according to use condition to judge the battery usage， can also be based on the front panel light shading degree judgment， because lithium battery with no memory effect， so it can be charged at any time according to the situation.

Specifications:

Source: DC 5V

Frequency response: 10-100KHz

SNR: ≥ 98dB

Crosstalk attenuation: 60dB

Gain: ≥ 12dB (high) ≥6dB(low)

Charging time: 200 minutes ( PC USB )

Cell broadcast time: over 10 hours

The maximum output power:

High voltage = 300mW (16Ω) 200mW (32Ω) 35mW (300Ω)

Low voltage = 120mW (16Ω) 88mW (32Ω) 13mW (300Ω)

Input impedance: >5k