Product Highlights
Universal Compatibility
Seamlessly connects with a variety of audio devices through multiple interfaces, boosting low-level signals for enhanced audio output.
Robust Amplification
Features adjustable gain and a wide voltage range, operating at 26V for ±12.5V output and a maximum 20dB gain, ensuring powerful audio performance.
Crystal-Clear Sound
Double-sided PCB with a swappable NE5532P op amp for customizable sound quality, delivering a natural, warm, and distortion-free listening experience.
Compact and Durable
An all-metal, mini design offers both style and protection against electromagnetic interference, suitable for a wide range of audio enhancement needs.
Comparison with Similar Booster
How to use Douk Audio L1
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
 Douk Audio L1 |  Douk Aufio U3 |  Douk Audio U10 |  Douk Audio E6 |  Douk Audio P1 |  Douk Audio T4 PRO | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — | — | — no data | — | — |
| Feature | Line Level Booster | Digital Headphone Amp | Tube Headphone Amp | Tube Preamplifier | Bluetooth Tube Preamp & Headphone Amp | Tube Phono Preamp & Headphone Amp |
| Audio input | 3.5mm AUX / Stereo RCA / 5-DIN | stereo L/R RCA | 3.5mm AUX / Stereo RCA | standard stereo L/R RCA | Bluetooth 5.0 (APTX-HD) + RCA + PC-USB | MM phono/turntable / 3.5mm AUX |
| Audio output | Stereo RCA / 5-DIN | 6.35mm headphone jack (with 6.35mm to 3.5mm adapter) | 3.5mm / 6.35mm headphone jack | standard stereo L/R RCA | Stereo RCA / 3.5mm headphone jack | stereo L/R RCA / 3.5mm headphone jack |
| Frequency response | 20Hz-20KHz ( ± 0.5dB) | 20-30KHz | 20Hz-30KHz | 20Hz-30KHz | 20Hz-20kHz(±3dB) | 20Hz-20KHz(±3dB) (AUX IN) / Standard RIAA (phono IN) |
| THD | 0.06% Max | no data | no data | no data | =0.01% | 0.2% |
| S/N ratio | >80dB | =110DB | =110DB | =90DB | =103dB | =105dB |
| Gain | 20dB (Adjustable) | no data | no data | no data | no data | no data |
 Nobsound NS-01G PRO |  Douk Audio ST-01 PRO |  Douk Audio M4 |  Douk Audio T8 PRO |  Nobsound Q4 |  Douk Audio VU22 | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — | — | — | — no data | — |
| Feature | 2-CH 100W Bluetooth Amp & USB Sound Card | 2-CH 200W Bluetooth Tube Amp with USB/OPT Inputs | 4-CH 50W x 4 Bluetooth Amp with U-Dsik Input | 7-Band Equalizer & XLR Balanced Tube Preamp | USB Gaming DAC & Bluetooth Headphone Amp | Analog Sound Level & VU Meters with MIC+LINE Inputs |
Douk Audio & Nobsound
Make Hi-Fi Affordable
Douk Audio & Nobsound
Estabilshed in 2013, Douk Audio & Nobsound is created by a group of enthusiastic music fans and professional audio experts.
We design and make various audio equipments including amplifier, phono preamp, headphone amp, DAC, audio switch and so on.
Our aim is "Make Hi-Fi Affordable" !
New Released
Ampapa Q1 DAC | Bluetooth Headphone Amp
New Released
Douk Audio G7 Flagship Amplifier
New Released
Ampapa D1 Bluetooth Amplifier
New Released
Douk Audio P7 Phono Preamplifier
New Released
Douk Audio U2 PRO DDC
Amplifier | Bluetooth Receiver
Headphone Amp | Preamplifier
DAC | DDC
Equalizer
Audio Visual | VU Meter Series
Product Highlights
Universal Compatibility
Seamlessly connects with a variety of audio devices through multiple interfaces, boosting low-level signals for enhanced audio output.
Robust Amplification
Features adjustable gain and a wide voltage range, operating at 26V for ±12.5V output and a maximum 20dB gain, ensuring powerful audio performance.
Crystal-Clear Sound
Double-sided PCB with a swappable NE5532P op amp for customizable sound quality, delivering a natural, warm, and distortion-free listening experience.
Compact and Durable
An all-metal, mini design offers both style and protection against electromagnetic interference, suitable for a wide range of audio enhancement needs.
Comparison with Similar Booster
How to use Douk Audio L1
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 | 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*Booster; 1*USB to DC Cable; 1*3.5mm to RCA Cable; 1*2:2 RCA Cable |
Douk Audio L1 | Douk Aufio U3 | Douk Audio U10 | Douk Audio E6 | Douk Audio P1 | Douk Audio T4 PRO | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — | — | — no data | — | — |
| Feature | Line Level Booster | Digital Headphone Amp | Tube Headphone Amp | Tube Preamplifier | Bluetooth Tube Preamp & Headphone Amp | Tube Phono Preamp & Headphone Amp |
| Audio input | 3.5mm AUX / Stereo RCA / 5-DIN | stereo L/R RCA | 3.5mm AUX / Stereo RCA | standard stereo L/R RCA | Bluetooth 5.0 (APTX-HD) + RCA + PC-USB | MM phono/turntable / 3.5mm AUX |
| Audio output | Stereo RCA / 5-DIN | 6.35mm headphone jack (with 6.35mm to 3.5mm adapter) | 3.5mm / 6.35mm headphone jack | standard stereo L/R RCA | Stereo RCA / 3.5mm headphone jack | stereo L/R RCA / 3.5mm headphone jack |
| Frequency response | 20Hz-20KHz ( ± 0.5dB) | 20-30KHz | 20Hz-30KHz | 20Hz-30KHz | 20Hz-20kHz(±3dB) | 20Hz-20KHz(±3dB) (AUX IN) / Standard RIAA (phono IN) |
| THD | 0.06% Max | no data | no data | no data | =0.01% | 0.2% |
| S/N ratio | >80dB | =110DB | =110DB | =90DB | =103dB | =105dB |
| Gain | 20dB (Adjustable) | no data | no data | no data | no data | no data |
Nobsound NS-01G PRO | Douk Audio ST-01 PRO | Douk Audio M4 | Douk Audio T8 PRO | Nobsound Q4 | Douk Audio VU22 | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — | — | — | — | — no data | — |
| Feature | 2-CH 100W Bluetooth Amp & USB Sound Card | 2-CH 200W Bluetooth Tube Amp with USB/OPT Inputs | 4-CH 50W x 4 Bluetooth Amp with U-Dsik Input | 7-Band Equalizer & XLR Balanced Tube Preamp | USB Gaming DAC & Bluetooth Headphone Amp | Analog Sound Level & VU Meters with MIC+LINE Inputs |
Douk Audio & Nobsound
Make Hi-Fi Affordable
Douk Audio & Nobsound
Estabilshed in 2013, Douk Audio & Nobsound is created by a group of enthusiastic music fans and professional audio experts.
We design and make various audio equipments including amplifier, phono preamp, headphone amp, DAC, audio switch and so on.
Our aim is "Make Hi-Fi Affordable" !
New Released
Ampapa Q1 DAC | Bluetooth Headphone Amp
New Released
Douk Audio G7 Flagship Amplifier
New Released
Ampapa D1 Bluetooth Amplifier
New Released
Douk Audio P7 Phono Preamplifier
New Released
Douk Audio U2 PRO DDC
Amplifier | Bluetooth Receiver
Headphone Amp | Preamplifier
DAC | DDC
Equalizer
Audio Visual | VU Meter Series