Douk Audio L1 Mini Stereo Line Level Booster Amplifier Audio Preamp with 20dB Gain and Volume Control

Douk Audio L1 Mini Stereo Line Level Booster Amplifier Audio Preamp with 20dB Gain and Volume Control

Mutiple input/output interfaces: with 3.5mm AUX/stereo RCA/5-DIN inputs and stereo RCA/5-DIN outputs, can be compatible with most low-volume audio sources such as ipod, ipad, phone, TV, MP3 player, potable CD player, computer, video game etc., and boost their output to the level needed to drive amplifier or speakers. With built-in amplification and voltage boost circuit: adjustable gain to match better with different audio sources, support DC 5-24V wide input voltage that can share the power supply of amplifiers, while L1 can always work at a high voltage of 26V to provide ±12.5V high output amplitude and max 20dB high gain. Unique design and HiFi clear sound: double-side PCB design, NE5532P op amp with pluggable socket design, convenient to change other op amps to enjoy different sound and bring much DIY fun for audiophiles. High-qaulity sealed potentiometer, with wide frequency bandwidth and excellent dynamic response, the sound is smooth and natural, warm and delicate with ultra-low distortion. Mini size with exquisite appearance, compact and all-metal design for durability and shielding the electronics from electromagnetic interference with noise rejection. Perfect design in size and function, suitable for many scenarios to increase the output level, such as home stereo system, mixer or speaker setup, karaoke, audio recording, party, live stage event etc. How to use:
1. Please prepare a power adapter and connect power source and L1 via power cable, you can use DC 5-24V power supply, also can use phone charger/power bank/computer as power source to connect L1 via USB to DC cable.
2. Connect your audio source such as phone, ipod, MP3, ipad, TV or other audio device with low level output to L1 via RCA/3.5mm AUX/5-PIN DIN input interface.
3. Connect backend audio device such as preamp, amplifier, active speaker etc. to L1 via RCA/5-PIN DIN output interface.
4. Rotate the power/volume knob on the top panel to turn L1 on, play music on your audio source and turn on the backend audio device in order, then continue to rotate the volume knob to adjust the gain until you feel perfect. Introduction
Douk Audio L1 is a stereo amplifier with built-in voltage boost and amplification circuits, designed to boost the output of virtually any line level audio source (such as TV, video games, MP3 players, ipod, phone, tablet etc.) to max 20dB. L1 features its wide gain range, wide frequency response, excellent S/R and HiFi sound, to bump the output level of the audio devices which are with an inherently low level output so as to match other sources, or to allow the use of a longer cable run than normal between components.

Warm Tips
1. 3.5mm AUX input with priority, please make sure AUX cable has been disconnected if you want 5-DIN or stereo RCA input.
2. 5-DIN and stereo RCA output can work at the same time.
3. Equipped with USB to DC cable, NOT include power adapter, can use phone charger/power bank/computer to power it.

Parameters
Audio input: 3.5mm AUX / Stereo RCA / 5-DIN
Audio output: Stereo RCA / 5-DIN
Gain: 20dB (Adjustable)
Frequency response: 20Hz-20KHz ( ± 0.5dB)
THD: 0.06% Max
S/N ratio: >80dB
Input sensitivity: 150mW/50KHz at 1KHz
Max output amplitude: ±12.5V
Input voltage: DC 5-24V
Working voltage of amplification part: DC 26V
Dimensions(W*D*H): 87*63*48mm / 3.43*2.48*1.89in
Package dimensions(W*D*H): 150*90*110mm / 5.91*3.54*4.33in
Net weight: 155g / 0.34lb
Package weight: 400g / 0.88lb

Packing List
1*L1 Stereo Line Level Booster
1*USB to DC Cable
1*3.5mm to RCA Cable
1*2:2 RCA Cable