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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
4.4 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Very handsome suit
Color: Beige, Size: 14
Good quality, fashionable and comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
★★★★★ 5
An L shirt for a real L person.
Special Size: Standard, Size: Large, Color: Wine Red
I love this shirt! I have been an "XL" guy for decades. Got back down to "L" a year ago. Finally bought some L shirts, starting with this one. Nice fit. Good stitching, tight buttons, crisp fabric. The button-down neck is sturdy and keeps a classic shape to it after several times through the wash. Not much stretch, so buy it if you are *really* a size L. But if you used to be a size XL, and came down a year ago, get one of these. You deserve it.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Great shirt - tail could be longer - great color selection - No 1000 pins to remove!
Special Size: Standard, Size: X-Large, Color: Aroyal Blue
Favorite shirt, fits well, looks good, durable. I'd like if the shirt tail was longer. All cotton so they shrink a bit after washing and need to stretch back out.
Overall, I'd like if they were a touch larger or I was a touch smaller.
I love that they don't have a HUGE AMAZON BASICS label on them. And I LOVE that I don't have to spend thirty minutes removing tiny stick pins like other dress shirt makers force you to do - what a waste!
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Reviewed in the United States on February 19, 2026
★★★★★ 4
Reliable, well-made shirt with a slightly lighter color than expected
Special Size: Standard, Size: X-Large, Color: Navy, Special Size: Standard, Size: X-Large, Color: Navy
This Alimens & Gentle Oxford shirt is a solid, well-made option that holds up well over time. After roughly 20 wears and washes, it’s proven to be durable and fairly resistant to wrinkles, which is a big plus for a cotton button-down.
Fit & Comfort:
The fit runs a bit on the loose side, but it’s still comfortable and easy to wear. It’s not a slim fit, so if you prefer a more tailored look, keep that in mind.
Material & Performance:
The fabric is thicker than most standard dress shirts, which makes it a great choice for cooler weather. It provides a bit more structure and warmth, but it may not be as breathable in the summer months. On the plus side, it washes and irons well and maintains its shape over time.
Appearance & Versatility:
The shirt pairs well with both dress pants and jeans, so it works in both professional and casual settings. One thing to note — the actual color is noticeably lighter than what’s shown in the listing. In my case, I still liked the look and kept it, but it’s something to be aware of when ordering.
Bottom Line:
A dependable, slightly heavier Oxford shirt that’s great for fall and winter wear. Best for those who prefer a relaxed fit and don’t mind a small variation in color from the listing.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
What A Find! Unbelievable Quality and Price!
Special Size: Standard, Size: Large, Color: Plaid-light Blue
I can't believe the quality of this shirt!! I ordered the blue checked one for my husband for a costume. The price was right and I didn't expect much, as it was just for a costume. It came packed into a little box, which I figured showed it would be super thin and cheaply made, but didn't really care as only needed it for one time. Woah!!!! I opened the box and was absolutely floored by the quality and heft to the material. It is crazy. I don't know how they get this shirt into that box, but it is baffling. This shirt is of high quality, with all the seems sewn well. The fabric is every bit as good as the brand of oxford shirt that costs 3 times the price of this one. My husband goes between medium and large. He takes 16" neck in dress shirts. We ordered the large and it fits well. Has a little room, but not in a too big type of way. I washed it once before wearing, and it washed well. Not much shrinking at all. It ironed very easily without a problem. Yes, it is 100% percent cotton. Because of the quality and fit, I will now order additonal colors. My husband loves this shirt. This is an excellent buy!!!
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Reviewed in the United States on August 30, 2025