HA400 is a 4 channels headphone amplifier and each channel canwork separately. It has a

unique appearance, with 4 anti-slip mats, HA400 looks morecharming.By utilising a circuit design

of left and right track separately magnification, each headphoneoutput can up to 1W and can

easily used together with headphones whose impedance is up to600 ohms.Thanks to the 10

pcs of 368BD back-end amplifier tubes, the sound is powerful andwarm. HA400 also utilises

the feedback suppressing circuit design to avoid "howling" whenuse with headphones which have

low impedances, can be compatible with various impedanceheadphones. HA400 can be widely

used in broadcasting & TV stations, studio recordings and atthe same time is the ideal choice

for personal recordings.

Features: 

1.Unique and charming appearance, each channel can workseparately;

2.Left and right track separately magnify circuit design,highoutput power,big magnification;

3.Can be compatible with headphones of various impedances;

4.Feedback suppressing circuit design to avoid "howling";

5.Powerful sound,no distortion, easy to use;

6.Both left & right track linear input and INJECT inputdesign , professional double inputs system;

7.Aluminum alloy housing,high strength steel panels, rugged anddurable.

Specifications:

Max. Input Level: 25dB 

Inputs: Line L/R,1/4"TRS

Outputs: 4 channels 1/4"TRS

Input Impedance: 100KΩ

Output Impedance: 60Ω

Max. Level: 18dB/channel

S/N Ratio:>90dB                  

THD: <0.005%

IMD: <0.005%

Power Supply:  AC 15V 800mA 

Dimensions: 168mmX130mmX52mm