Feature
●Multiple Inputs for Different Usages: with 2 groups of RCA and Bluetooth 5.0 inputs and switch knob, can switch multi-way input signals losslessly, 1 group of full-frequency RCA and 1 group of low frequency output, can connect to an amplifier or active speaker and an active subwoofer at the same time.
●HiFi Clear Sound and Perfect Design: using 2PCS NE5532 op amps responsible for pre-amplification and tone control, 2PCS NE5532 for low frequency output circuit. L2 can greatly improve the sound quality, with wide frequency response, large dynamic, rich details, deep lows, sounds smooth and clear .
●Tone Control with Bypass Function: more smooth and delicate sound can be enjoyed by adjusting treble, mid and bass knob, and bypass function(turn treble knob to the leftmost end) is added to turn off the tone control and enjoy original sound, adding much fun and higher playability.
●Mature Circuit & High-quality Components: QCC3034 Bluetooth chip (APTX-HD); Independent left and right channel; Pluggable socket design; Linear power supply; Pure class A rectifier filter
●Attractive Appearance and Wide Use: whole aluminum alloy case and pure aluminum knobs, looks more fashionable and durable, can match perfectly with audio players, DAC, computer, amplifier, headphone amp, active speakers, active subwoofers etc. to provide HiFi audio enjoyment.
Description
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| Nobsound L2 | Douk Audio B5 | Nobsound Q4 | Nobsound NS-01G PRO | Douk Audio SE | Douk Audio M1 PRO | |
| Feature | Bluetooth 5.0 Receiver & Preamp; Tone Control; Active SUB Out; APTX-HD | Bluetooth 5.0 Receiver; RCA/OPT/COAX; APTX-HD; 24Bit 96KHz | Bluetooth 5.0 Receiver; RCA/OPT/COAX; USB DAC; 24Bit/192KHz | 2-CH Bluetooth 5.0 Amplifier; USB Sound Card; 50Wx2 | 2-CH Bluetooth 5.0 Amplifier; U-Disk; 50Wx2 | 2-CH Bluetooth 5.0 Amplifier; Active SUB Out; U-Disk; Tone Control; 160Wx2 |
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| Douk Audio X1 | Douk Audio P1 | Douk Audio U3 | Douk Audio U2 PRO | Nobsound G2 | Douk Audio BOX-04 | |
| Feature | Bluetooth Tube Phono Amplifier; Active SUB out; 160Wx2 | Bluetooth Tube Preamp; Headphone Amplifier; USB DAC; Tone Control; APTX | Class A Desktop Headphone Amplifier | Digital interface; USB to Toslink optical/coaxial/I2S converter; XMOS XU208 | Subwoofer & Mono Amplifier; 100W | 4-Way audio selector; Bluetooth + RCA; APTX-HD |
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Bluetooth Preamp & Receiver
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Multiple Inputs & Outputs
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Tone Control & Bypass
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Power & Audio Input Switch
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Packing List
- 1*Digital Preamp
- 1*Bluetooth Antenna
- 1*Power Cord
- 1*User Manual
Nobsound L2
Warm Tip
This is preamp, needs to work with amplifier/headphone amplifier/active speaker, cannot drive passive speakers directly. Its subwoofer output only can connect active subwoofer.