DOUK AUDIO NE5532 User manual

Audio input
Audio output
Output power
Matched headphone impedance
Frequency response
Signal to noise ratio
Max output amplitude voltage
Input voltage
Dimension(W*D*H)
Stereo L/R RCA
6.35mm headphone jack (with 6.35mm to 3.5mm adapter)
≥1300mW (32Ω)
18-600Ω
20-30KHz
≥110DB
25V
DC 5-20V
67*93*30mm / 2.64*3.66*1.18in
Contact Information
Address: Room 1329, Wang Cheng Building, Long Guan street, Long Hua new District, Shenzhen, Guang Dong, China
Contact: LIU CHENXI Tel: [phone] Email: [email protected]
1. Connect audio source to RCA input of U3 with good quality audio cable.
2. Connect to 5V power adapter or computer or power bank with USB cable, also can use DC 5-20V
power adapter and then press power button to turn it on.
3. Connect your headphone to the output of U3, then play HiFi music on your audio device and enjoy it.
How to use
Parameters

U3 Mini Class A Headphone Amplifier
User Manual
DOUK AUDIO
1. Pluggable op amp socket, NE5532 op amp can be replaced by 2604AP, 2107AP, EL2244, 8920 etc.
2. Working voltage is DC 5V-20V, exceed 20V will result in damage.
3. With stong drive power, easily to drive most high-impedance headphones such as:
HD580/HD600/HD650
K701/K702/Q701
DT880/T70/T90
SR225/SR325/RS1e
Warm tips