My unit has stopped working. Mini input jack may be bad. How do I return for replacement? purchased 9/2/22

Try a new supply for cable to usb ie another high power charger.

Can this amplify a video signal to allow splitting on multiple viewing screens ?

No. It is for audio only (and in my opinion, doesn't even do that well). You need a device that is specifically for video, like this: https://www.amazon.com/MT-VIKI-Splitter-Composite-Distribution-Amplifier/dp/B0882RHYTW/ This will take a composite video input, amplify it, and provide multiple outputs. It also does the same for the associated audio inputs.

What are the exact dimensions of the power connector? The connector has 2 dimensions, the outer diameter and the inner pin diameter (5.5 mm x?)

I don't know. My Mini Stereo Line Level Amp stopped working the second week I owned it. I recommend buying something else.

Will it give a full 2 volt line out RCA signal

So long as the input level is sufficient to create a 2V output signal, the answer is yes. If the input signal is not of sufficient amplitude it will/can not.

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

Product ID: 243819127

Details

Brand
Douk Audio
Manufacturer
Douk Audio
Maximum Supply Voltage
26
Minimum Supply Voltage
26
Mounting Type
Surface Mount

🔊20dB max gain boost

🔌Wide 5-24V input voltage

🎛️NE5532P op amp with socket

€ 85.83

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Description

🎧 Elevate every note — small amp, massive impact!

COMPACT DURABLE - All-metal mini design shields against interference and fits any setup
CUSTOMIZABLE SOUND - Plug-and-play NE5532P op amp socket lets you tailor your audio signature
UNIVERSAL USE CASES - Perfect for home stereo, karaoke, live events, and pro audio rigs
POWERFUL AMPLIFICATION - Up to 20dB gain with ±12.5V high output amplitude for crystal-clear sound
VERSATILE CONNECTIVITY - 3.5mm AUX, RCA & 5-DIN inputs/outputs for seamless device compatibility

The Douk Audio L1 Mini Stereo Line Level Booster Amplifier is a compact, all-metal preamp delivering up to 20dB gain with versatile input/output options including 3.5mm AUX, RCA, and 5-DIN. Featuring a high-voltage ±12.5V output and a socketed NE5532P op amp for easy sound customization, it supports a wide 5-24V power supply range. Ideal for audiophiles and professionals seeking clear, warm, and distortion-free amplification in home, studio, or live environments.

Specifications

ASIN	B08L4WYSZ4
Best Sellers Rank	#22,087 in Electronics ( See Top 100 in Electronics ) #109 in Audio Component Amplifiers
Brand Name	Douk Audio
Customer Reviews	4.1 4.1 out of 5 stars (341)
Manufacturer	Douk Audio
Maximum Supply Voltage	26 volts_of_direct_current
Minimum Supply Voltage	26 volts_of_direct_current
Model	XZ-L1
Mounting Type	Surface Mount
Number of Channels	2
Number of Items	1
Output Power	12.5 volts
Part Number	XZ-L1
Unit Count	1 Count

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€ 85.83

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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