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

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

🔌5-24V wide input voltage

🎛️NE5532P op amp with socket

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Description

🎧 Boost your vibe, not just your volume!

COMPACT DURABLE - All-metal mini chassis with electromagnetic shielding delivers premium sound clarity without interference.
CUSTOMIZABLE SOUND - Plug-and-play NE5532P op amp socket lets you swap op amps for personalized HiFi tuning and DIY audiophile fun.
POWERFUL AMPLIFICATION - Up to 20dB gain with ±12.5V high output amplitude ensures your audio is always crisp and loud.
VERSATILE CONNECTIVITY - Multiple inputs/outputs (3.5mm AUX, RCA, 5-DIN) for seamless integration with all your favorite devices.
UNIVERSAL COMPATIBILITY - Supports 5-24V power input, perfect for home stereo, mixers, karaoke, live events, and more.

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 customizable NE5532P op amp socket and wide voltage support (5-24V), it delivers clear, warm, and distortion-free sound in a durable, EMI-shielded metal case—ideal for audiophiles and professionals seeking enhanced audio output across multiple devices and scenarios.

Specifications

ASIN	B08L4WYSZ4
Best Sellers Rank	#32,655 in Electronics ( See Top 100 in Electronics ) #172 in Audio Component Amplifiers
Brand Name	Douk Audio
Customer Reviews	4.0 4.0 out of 5 stars (342)
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$153657

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.

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TrustScore 4.5 | 7,300+ reviews

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