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 Volts (DC)
Minimum Supply Voltage
26 Volts (DC)
Mounting Type
Surface Mount

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

🔌3.5mm AUX/RCA/5-DIN multi-input/output

🎛️Adjustable gain & volume control with NE5532P op amp

₱6146

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Description

🎧 Elevate Every Note — Compact Powerhouse for Audiophiles on the Go!

POWERFUL AMPLIFICATION - Boost your audio with up to 20dB gain and a robust ±12.5V output for crystal-clear sound that commands attention.
UNIVERSAL COMPATIBILITY - Seamlessly connects with iPods, TVs, gaming consoles & more via versatile AUX, RCA, and 5-DIN ports.
COMPACT DURABLE DESIGN - All-metal, mini chassis shields against interference while fitting perfectly into any professional or home setup.
VERSATILE USAGE SCENARIOS - Ideal for home stereos, mixers, karaoke nights, live events, and recording studios—never settle for low volume again.
CUSTOMIZABLE SOUND EXPERIENCE - Swap out the NE5532P op amp easily to tailor your audio signature and dive into DIY audiophile fun.

The Douk Audio L1 Mini Stereo Line Level Booster Amplifier is a compact, all-metal preamp delivering up to 20dB gain with ±12.5V output amplitude. Featuring multiple input/output options (3.5mm AUX, RCA, 5-DIN), adjustable gain, and a pluggable NE5532P op amp, it offers versatile compatibility and customizable sound. Designed for durability and noise rejection, it’s perfect for enhancing low-volume audio sources across home, studio, and live event environments.

Specifications

ASIN	B08L4WYSZ4
Best Sellers Rank	#33,276 in Electronics ( See Top 100 in Electronics ) #185 in Audio Component Amplifiers
Brand Name	Douk Audio
Customer Reviews	4.1 4.1 out of 5 stars (338)
Manufacturer	Douk Audio
Maximum Supply Voltage	26 Volts (DC)
Minimum Supply Voltage	26 Volts (DC)
Model	XZ-L1
Mounting Type	Surface Mount
Number of Channels	2
Output Power	12.5 Volts
Part Number	XZ-L1
Unit Count	1.0 Count

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₱6146

Duties & taxes included

In stock

Sold byAmazon PhilippinesDelivered 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 Philippines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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