Douk Audio Bluetooth Tube Preamp: HiFi Stereo Preamplifier Receiver | Headphone Amp | USB DAC | Tone Control for Home Theater, Desktop Listening (P1)

Douk Audio Bluetooth Tube Preamp: HiFi Stereo Preamplifier Receiver | Headphone Amp | USB DAC | Tone Control for Home Theater, Desktop Listening (P1)

Tube Preamp – Warm HiFi Sound: JAN5725 vacuum tubes deliver a warm, dynamic, and sweet analog tone, enhancing vocals and instruments with classic tube richness ideal for home stereo upgrades. Bluetooth 5.0 – High-Resolution Wireless Audio: Equipped with QCC3034 and aptX-HD decoding to ensure low-latency, high-fidelity wireless transmission when streaming from phones, tablets, or TVs. USB DAC – 24bit/192k High-Performance Decoding: CM6642 USB DAC supports 24bit 192kHz high-resolution audio and works seamlessly with Windows, Mac, and Linux for clearer and more detailed PC playback. Headphone Amplifier – Powerful 32–300Ω Drive: NE5532 op-amp and classic 47 headphone architecture deliver up to 160mW output, providing clean, powerful drive for most 32–300Ω headphones. Tone Control – Adjustable Bass & Treble: A convenient bypass switch and ±6dB tone knobs allow instant switching between pure original sound and fine-tuned bass/treble for personalized listening. Warm tips:
1. All analog audio outputs will work at the same time no matter what audio input is selected. While the optical output will only work when PC-USB inputs.
2. Only USB input supports PCM 384Khz/32bit DSD256, coaxial and optical inputs only support PCM 192KHz/24Bit at the highest.
3. For win7, PC-USB only can be recognized when the driver is installed. For other systems, the driver is only required when playing DSD files.
4. P1PLUS default comes with JAN5654 tubes, can be replaced by 6J1, 6K4, 6J5, GE5654W, 6*1N, 6*2N, 6J5,6A2, etc.
5. The volume / treble / bass of the three outputs (stereo RCA / 3.5mm AUX output and 3.5mm headphone jack) are controlled simultaneously.

Parameters
Brand: Douk Audio
Model: P1 PLUS
Audio input: Bluetooth / USB / Coaxial / Optical / Stereo RCA / 3.5mm AUX
Audio output: Optical / Stereo RCA / 3.5mm AUX / 3.5mm headphone jack
Chipset: QCC5125+SA9137L+ES9018K2M+TPA6120+OPA1656 (2PCS pluggable)
Max. Sampling rate USB supported: PCM 384KHz/32Bit / DSD256
Max. Sampling rate Coaxial/Optical supported: PCM 192KHz/24Bit
Operation systems PC-USB supported: W7/W8/W10/W11/MAC/Linux
Bluetooth version: 5.1 (support AAC/SBC/APTX/APTX-HD/LDAC)
Frequency response: 20Hz-20kHz(±1.8dB)
THD: 0.1%
SNR: ≥106dB
Input sensitivity: 0dBFS
Output level: 2V
Matched impedance of headphones: 16-600Ω
Output power of headphone jack: 750mW
Working voltage: DC 12V (≥1.5A)

Packing List
1 × P1PLUS DAC Preamp
1 × DC 12V Power Adapter
2 × JAN5654 Tube
1 × VU Meter
1 × Bluetooth Antenna
1 × USB Cable
1 × Optical Cable
1 × User Manaul