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

⚡Max 20dB gain with ±12.5V high output amplitude

🔌3.5mm AUX, RCA & 5-DIN inputs/outputs

🛠️NE5532P op amp with DIY socket design

S/.270

Duties & taxes included

In stock

Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate Every Note — Boost Your Sound, Not Your Gear!

DIY FRIENDLY - Swap op amps easily to customize your sound signature and elevate your audio experience.
COMPACT DURABLE - All-metal mini design shields against interference, perfect for home, studio, or live events.
AUDIOPHILE GRADE SOUND - HiFi clarity with ultra-low distortion thanks to premium op amp and sealed potentiometer.
PRECISION VOLUME BOOST - Adjustable 20dB gain ensures your audio hits the perfect loudness without distortion.
UNIVERSAL CONNECTIVITY - Seamlessly integrates with phones, TVs, computers & more via multiple input/output ports.

The Douk Audio L1 Mini is a compact, high-performance stereo line-level booster preamp offering up to 20dB gain with versatile 3.5mm AUX, RCA, and 5-DIN inputs/outputs. Featuring a premium NE5532P op amp in a pluggable socket, it delivers ultra-clear, low-distortion sound with adjustable volume control. Its rugged all-metal design ensures durability and noise rejection, making it ideal for audiophiles and professionals seeking a clean, customizable audio boost across multiple devices and environments.

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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