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Description
sound boosting boxes Douk Audio L1 Mini Stereo Line Level Booster Amplifier Audio Preamp 20Introduction Douk Audio L1 is a stereo amplifier with built in voltage boost and amplification circuits, designed to boost the output of virtually any line level audio source (such as TV, video games, MP3 players, ipod, phone, tablet etc.) to max 20dB. L1 features its wide gain range, wide frequency response, excellent S R and HiFi sound, to bump the output level of the audio devices which are with an inherently low level output so as to match other
Introduction
Douk Audio L1 is a stereo amplifier with built-in voltage boost and amplification circuits, designed to boost the output of virtually any line level audio source (such as TV, video games, MP3 players, ipod, phone, tablet etc.) to max 20dB. L1 features its wide gain range, wide frequency response, excellent S/R and HiFi sound, to bump the output level of the audio devices which are with an inherently low level output so as to match other sources, or to allow the use of a longer cable run than normal between components.
Features
- Mutiple input/output interfaces: with 3.5mm AUX/stereo RCA/5-DIN inputs and stereo RCA/5-DIN outputs, can be compatible with most low-volume audio sources such as ipod, ipad, phone, TV, MP3 player, potable CD player, computer, video game etc., and boost their output to the level needed to drive amplifier or speakers.
- With built-in amplification and voltage boost circuit: adjustable gain to match better with different audio sources, support DC 5-24V wide input voltage that can share the power supply of amplifiers, while L1 can always work at a high voltage of 26V to provide ±12.5V high output amplitude and max 20dB high gain.
- Unique design and HiFi clear sound: double-side PCB design, NE5532P op amp with pluggable socket design, convenient to change other op amps to enjoy different sound and bring much DIY fun for audiophiles. High-qaulity sealed potentiometer, with wide frequency bandwidth and excellent dynamic response, the sound is smooth and natural, warm and delicate with ultra-low distortion.
- Mini size with exquisite appearance, compact and all-metal design for durability and shielding the electronics from electromagnetic interference with noise rejection. Perfect design in size and function, suitable for many scenarios to increase the output level, such as home stereo system, mixer or speaker setup, karaoke, audio recording, party, live stage event etc.
Warm tips
- 3.5mm AUX input with priority, please make sure AUX cable has been disconnected if you want 5-DIN or stereo RCA input.
- 5-DIN and stereo RCA output can work at the same time.
- Equipped with USB to DC cable, NOT include power adapter, can use phone charger/power bank/computer to power it.
Parameters
- Audio input: 3.5mm AUX / Stereo RCA / 5-DIN
- Audio output: Stereo RCA / 5-DIN
- Gain: 20dB (Adjustable)
- Frequency response: 20Hz-20KHz ( ± 0.5dB)
- THD: 0.06% Max
- S/N ratio: >80dB
- Input sensitivity: 150mW/50KHz at 1KHz
- Max output amplitude: ±12.5V
- Input voltage: DC 5-24V
- Working voltage of amplification part: DC 26V
- Dimensions(W*D*H): 87*63*48mm / 3.43*2.48*1.89in
- Package dimensions(W*D*H): 150*90*110mm / 5.91*3.54*4.33in
- Net weight: 155g / 0.34lb
- Package weight: 400g / 0.88lb
Packing List
- 1*L1 Stereo Line Level Booster
- 1*USB to DC Cable
- 1*3.5mm to RCA Cable
- 1*2:2 RCA Cable
Who Needs Douk Audio L1 Stereo Line Level Booster?
- Want to correct the sonic mismatch issues that often cause the output volume of portable players/MP3/computer lower than other home audio devices, resulting in distorted sound performance.
- Want to enhance the output level of karaoke players or CD/DVD player to transform your stereo music to thrilled sound for party or outdoor events, provide low-noise and high musical accuracy for listening and recording.
- Want to provide an external way of volume control for any audio source device or stereo amplifier that has no output level or volume adjustment of its own.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1638 reviews
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Product Reviews
★★★★★ 5
Quick and easy
My water kettle just stopped working after a year. Once I boxed up and returned the kettle, Asurion refunded my account.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Easy peasy
Good communication. Easy to file a claim. Received my refund as soon as the product was mailed.
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Reviewed in the United States on May 21, 2026
★★★★★ 4
Its good to have for electronics and kitchen items
I get the Insurance for certain Electronics and kitchen items.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Worth the money.
Quick and easy claim process. My refund was processed the same day that I shipped back the product.
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Reviewed in the United States on April 13, 2026
★★★★★ 1
All Gotchas, Gimmicks, and Grief
My husband broke the item in question, which was a Chemex coffee maker made of nothing but glass. It shattered full of coffee, so like a normal human he cleaned up the dangerous mess and threw it away. I put in a claim, and it said that I had to ship back the product. Believing that the Asurion process was as simple as stated, and reading the agreement that does mention that sometimes they'll require shipment of the item, but that they will review cases and use reasonable judgment, I contacted their chat, explaining that the requirement that I mail them a wet pile of shards of glass soaked in coffee (and a little bit of blood) was unsafe and unreasonable. I don't even know how I could do that in a way that would be safe for the people opening the packaging, or even to take it to the store. The shards of glass might puncture any plastic, and the wetness would soak through, plus there's the biohazard issue. Seems silly for a $47 product replacement to me. I figured any human would understand.
First chat associate closed my case without even responding to me. I had to reopen it.
The second one told me, "Yes, that is how your warranty works" as an answer to my "Hello, the last chat closed without me talking to anyone." I tried to explain the situation, and was told "If you call the hotline, maybe they'll help you."
I call the hotline. The first person tells me tough, I have to mail it. I say it was thrown away. He says "AHA then it's lost! Your warranty doesn't cover lost things!" I say no, it's not lost, it was disposed of properly as shards of glass should be. I finally ask can I speak to someone else or a supervisor. He lies and says yes. I sit on hold for 20 minutes, never any wait time or any sort of indicator of when someone will talk to me. The phone call quality finally gets very horribly staticky, so I hang up and try again.
Hallelujah, I get a decent human being who immediately says, "Oh, no, that's not reasonable! That is an unsafe thing to have to mail. I'll send it to the override department who should approve this because it's obvious that's not a normal thing to expect."
Today I get an email that says:
We can't approve your claim.
We reviewed your NO SUPPORTING MANUFACTURER COFFEE MAKER claim.
The product in your claim is not covered by your plan.
As a result, we're unable to approve your claim.
Nothing about the requirement to mail a biohazard, just the item isn't covered even though the item is absolutely covered.
While I understand that loss prevention is important, this is a very small potatoes return and it isn't like I made this up. It would be easy to make me happy. I'm sure it has cost them more money to deny it than they would have lost covering the Chemex. I've bought multiple of their product replacement policies before. I never will again. They didn't offer for me to send a picture or anything. They just wasted hours of my time and sent a clearly AI-based answer, rather than treating me like a valuable customer.
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Reviewed in the United States on February 28, 2024