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Introduction

Douk Audio T4 PRO can be used as a MM phono preamp, a tube audio preamp and a headphone amplifier, powerful function in mini size, specially designed for various requirements of home/desktop audio system.

Features

• T4 PRO tube preamp meets more HiFi needs:

MM phono input, converts phono signal to line level signal, with low-noise integrated circuits and high-quality components to ensure clear and clean sound.

3.5mm AUX input, amplify the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifier or active speaker and greatly improve the sound quality.

• Imported JAN5654 tubes and vintage warm sound: default comes with JAN5654 tubes, improves everything associated with your music such as detail, transparency, immediacy, richness, dynamic, tone etc., much better than 6J1 series especially in human voice. Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.

• 3.5mm headphone output and perfect circuit design: T4 PRO also with built-in classic headphone amp circuit(2*NE5532), easily to drive 32-300 ohm headphones. Reasonable and advanced architecture, TI TPS5430 for power management,  TL071+JRC2068 phono preamp circuit etc., enjoy HiFi analog sound and first-class design with an unbeatable low cost. 

• Mini size and excellent performance: all designs full of details, solid aluminum knob, potentiometer for smooth multi-level gain adjustment, grey integrated moulding aluminum alloy shell decorates with special red tube cover and knob, looks vintage and elegant.  Compact T4 PRO will give you a different acoustic enjoyment with large dynamic and sweet tube sound even in limited space.

Comparision between Douk Audio T4 PRO and Other Similar Preamp

Parameters

• Brand: Douk Audio
  
• 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)
  
• Max output power of headphone jack: 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 (exclude tubes)
  
• 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*T4 PRO Preamp
  
• 2*JAN5654 Vacuum Tube
  
• 1*DC 12V Power Adapter
  
• 1*3.5mm to RCA Cable