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

⚡Max 20dB adjustable gain

🔌Multi-interface inputs/outputs

🛡️All-metal EMI shielding

30193 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Amplify your audio life — louder, clearer, smarter.

VERSATILE USE CASES - Perfect for home stereo, live events, karaoke, or recording—boost your audio signal and never settle for mediocre sound again.
COMPACT DURABLE DESIGN - Sleek mini all-metal chassis shields against electromagnetic interference, ensuring noise-free performance in any setup.
UNIVERSAL AUDIO COMPATIBILITY - Connect effortlessly with 3.5mm AUX, RCA, and 5-DIN inputs to boost any low-volume device from phones to mixers.
POWERFUL PRECISE AMPLIFICATION - Experience up to 20dB gain with a robust ±12.5V output voltage, tailored to your source with adjustable gain control.
AUDIOPHILE GRADE SOUND CUSTOMIZATION - Swap the NE5532P op amp easily for personalized HiFi sound—warm, natural, and ultra-low distortion for true audio clarity.

The Douk Audio L1 Mini Stereo Line Level Booster is a compact, all-metal preamp designed to elevate low-volume audio sources with up to 20dB gain. Featuring multiple input/output options (3.5mm AUX, RCA, 5-DIN), adjustable gain, and a swappable NE5532P op amp, it delivers warm, distortion-free sound. Its durable design shields against electromagnetic interference, making it ideal for professional and home audio setups seeking enhanced volume and clarity.

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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30193 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered 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 Hungary.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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