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Description
sound boosting box 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
4.6 ★★★★★
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Product Reviews
★★★★★ 5
Good Price and quality
Color: Sky Blue
Good fit for my ipad 11th gen. Good quality and good color texture. The color doesn’t fade away quickly. Easy installation. Been using for 3 months now and it really protects your ipad.
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Good simple case
Color: Sky Blue
Fit perfectly with the iPad (A16) and it's such a pretty color! I got the light blue one. Makes me feel safer using the iPad and setting it down. It's pretty easy to fold up into a little stand but it only works well on a solid surface. I don't have an apple pencil but there seems to be a little storage slot for a pencil. The screen shuts on and off when the cover is lifted and closed which I though was a pretty cool.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Cover fits well and holds IPad secure
Color: Black
Holds IPad secure, and stands up well. Nice pen holder
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Reviewed in the United States on June 3, 2026
★★★★★ 4
Nice Lightweight Case with a Handy Pencil Holder
Color: Sky Blue
I received this 11-inch / iPad 10th Generation 10.9" case with Pencil Holder in Sky Blue through the Vine program, and overall it’s a nice, practical case.
The sky blue color is very pretty—soft and clean looking without being too bright. It gives the iPad a fresh look and feels nice in hand. The fit is good for the iPad 10th generation, and the soft TPU back makes it easy to install while still feeling secure once it’s on.
I also appreciate the built-in Apple Pencil holder. It keeps the pencil from rolling around or getting lost in a bag, and it’s easy to access when needed.
The trifold stand works well for basic viewing and typing angles. It holds the iPad steady when watching videos or browsing. However, the folds can feel a little less firm than some higher-end cases, so you sometimes need to position it carefully to keep the angle just right.
I do like that the case stays slim and lightweight, so it doesn’t add much bulk while still offering decent everyday protection.
Overall, it’s a good, functional case with a nice color and useful pencil holder. It may not feel quite as premium as some more expensive options, but it does the job well and is a solid choice for everyday use.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Ipad
Color: Sky Blue
Quality is amazing , fit and color. The price CANT be beat.
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Reviewed in the United States on May 25, 2026