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

🎛️Adjustable gain & volume control

AR$171216

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Description

🎧 Elevate Every Note — Small Box, Big Sound!

COMPACT DURABLE - All-metal mini design shields against interference while fitting perfectly into any setup.
POWERFUL AMPLIFICATION - Delivers up to 20dB gain with a high 26V output amplitude for crystal-clear sound elevation.
VERSATILE CONNECTIVITY - Seamlessly compatible with 3.5mm AUX, RCA, and 5-DIN inputs/outputs for all your devices.
BROAD APPLICATION READY - Ideal for home stereo, mixers, karaoke, live events, and more—boost your audio game everywhere.
AUDIOPHILES DIY DREAM - NE5532P op amp with pluggable socket lets you customize your sound signature effortlessly.

The Douk Audio L1 Mini Stereo Line Level Booster Amplifier is a compact, high-performance preamp offering up to 20dB gain with versatile input/output options. Featuring a wide 5-24V power range, customizable NE5532P op amp socket, and durable all-metal design, it’s engineered to enhance low-volume audio sources with ultra-low distortion and clear, warm sound—perfect for audiophiles and professionals seeking a portable yet powerful audio boost.

Specifications

ASIN	B08L4WYSZ4
Best Sellers Rank	#22,464 in Electronics ( See Top 100 in Electronics ) #111 in Audio Component Amplifiers
Brand	Douk Audio
Brand Name	Douk Audio
Customer Reviews	4.1 out of 5 stars 343 Reviews
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
Number of Packs	1
Part Number	XZ-L1
Unit Count	1 Count

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AR$171216

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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