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【Cautions for using electrical products】
When using electrical appliances, please note that the voltage is different from that of Japan, which may cause malfunctions.
Since the plug type is Japan type(A or B type), please check the voltage and use a transformer.
Please note that a transformer is different from a conversion adapter.
We are not responsible for malfunctions caused by use without a transformer.
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【Vacuum Tube Preamplifier】Douk Audio T4 PRO can be used as MM phono preamplifier, vacuum tube audio preamplifier and headphone amplifier, with powerful functions in mini size, specially designed to meet different requirements of home/desktop audio system. Masu.
【MM Phono Input】Converts phono signal to line level signal, uses low noise integrated circuit and high quality components to ensure clear and clean sound. 【3.5mm AUX Input】Amplify low-level audio signals from smartphones, tablets, PCs, MP3s, etc., making it easier to drive amplifiers and active speakers, greatly improving sound quality.
【3.5mm Headphone Output and Perfect Circuit Design】The T4 PRO preamp also incorporates a classic headphone amplifier circuit (2*NE5532), which can easily drive 32-300Ω headphones. Affordable and advanced architecture, TI TPA5430 for power management, TL071 + JRC2068 phono preamp circuit, etc., let you enjoy HiFi analog sound and top-notch design at an unbeatable low cost.
[JAN5654 Vacuum Tube] Imported JAN5654 Vacuum Tube and Vintage Warm Sound: Comes with JAN5654 Vacuum Tube by default, the details, clarity, immediacy, richness, dynamics, tone, etc. are all improved, especially for human In terms of voice, it's much better than the 6J1 series.
[Note] 1. Priority is given to 3.5mm AUX input. If using the MM phono input, please make sure the AUX cable is unplugged. 2.Stereo RCA and 3.5mm headphone jack can be output at the same time, and the knob also controls the volume of the two outputs at the same time.
Model: T4 PRO
Audio input: MM phono/turntable/3.5mm AUX
Audio output: Stereo L/R RCA/3.5mm headphone jack
Output level: 1.5V (input 0.775V)
Headphone jack maximum output: 150mW @32Ω
Matched headphone impedance: 32-300Ω
Input sensitivity: 0.775V
Frequency Response: 20Hz-20KHz (±3dB) (AUX IN)/Standard RIAA (Phono IN)
S/N ratio: -105dB
THD: 0.2%
Dimensions (W*D*H): 95*117*30mm/3.74*4.61*1.18in (excluding tube)
Package dimensions (W*D*H): 255*215*65mm/10.04*8.46*2.56in
Net weight: 330g / 0.73lb
Package weight: 600g / 1.32lb
packing list
1 * T4PRO Preamp
2 * JAN5654 vacuum tube
1 * DC12V power adapter
1 * 3.5mm TO RCA cable
