Douk Audio 2 Channel 200W HiFi Bluetooth 5.0 Vacuum Tube Amplifier-User Instructions

Douk Audio 2 Channel 200W HiFi Bluetooth 5.0 Vacuum Tube Amplifier

Specifications

• VOLTAGE: 24 Volts, 30 Volts
• MANUFACTURER: Douk Audio
• BRAND: Douk Audio
• NUMBER OF CHANNELS: 2
• OUTPUT: 100W(4Ω)
• AUX JACK SIZE: 3.5mm
• BLUETOOTH: 5.0
• VACUUM TUBES: 6K4
• MATCHED IMPEDANCE: 3-8Ω
• SAMPLING RATE SUPPORTED: 96KHz/24Bit(USB), 48KHz/24Bit(Bluetooth), 192KHz/24Bit(COAX/OPT)
• TREBLE / BASS CONTROL RANGE: ±6dB
• FREQUENCY RESPONSE: 20Hz-20kHz(±1dB)
• S/N RATIO: ≥98dB
• THD: 0.07%
• WORKING VOLTAGE: DC 18-30V
• DIMENSIONS(WDH): 1159854mm / 4.533.862.13in
• NET WEIGHT: 634g / 1.40lb
• PACKAGE WEIGHT: 1.4kg / 3.09lb
• SYSTEM PC-USB SUPPORTED: XP/W7/W8/W10/MAC/ Linux

Introduction

When listening to HiFi music, the pointer dances in the warm light with powerful vintage sentiments, dynamically decorating the audio system space. The ST-01 amplifier and VU meter are merged into a single unit in such a small size. Vacuum tubes are used to soften the sound and filter out the digital sensations, producing a pleasant, noise-free sound with hi-fi clarity and tone control. HiFi music is presented with rousing highs and deep lows, and treble and bass knobs are also available for adjusting one’s own preferred sound types. use TI’s traditional power amplifier IC, each channel is capable of producing 100W (4), making it simple to drive all 3–8 passive speakers. 3.5mm AUX output is added with it. To create a multiple channel system and have a superb home theatre experience, it is simple to attach a different amplifier, active speaker, or subwoofer.

It is Compatible with the majority of audio devices, including phones, computers, tablets, TVs, CD players, and stereo RCA and Bluetooth 5.0. The ideal DAC and amplifier combination, ideal for audiophiles with a variety of audio equipment. All settings can be made remotely using the full-featured remote control; the input choices and indicators make it plain to see the working state in real time; and the aluminum alloy case is particularly crafted to look nice and distinctive on your desktop.

HOW IT WORKS

It functions by drawing the negatively charged electrons in the vacuum tube toward itself, making it the anode. It both captures the signal from your guitar pickup and the electrons released by the cathode in the center.

HOW TO KNOW IF POWER TUBES ARE BAD

Tube issues can be detected by squeals, feedback, excessive noise, muddiness, or low output. energy tubes. A blown fuse or a tube that starts to glow cherry red are the two main signs of a power tube issue. Either of these is often a sign of a failed power tube.

FAQs

• How does DOUK audio sound?
  My CD player’s audio has also undergone a complete transformation. It is comparable to having an integrated tube line stage amp and tube phono preamp. The sound is excellent when using the included tubes, but I tried upgrading them and gained a little bit more volume. Excellent sound quality at a reasonable price.

• Are vacuum tube amplifiers more musical?
  What do you think—do tubes sound better or does it all sound the same? Both! Everything will sound the same if you match them all, but in reality, nothing is ever matched. In practice, tube amplifiers frequently have enough distortion to provide a distinctive sound.

• In what vacuum tubes do amplifiers use?
  Thyristors took their place after 50 years (solid state). Triodes: Triodes are tubes that can be used in a variety of devices, including radio receivers and transmitters, computers, and amplifiers. Transistors eventually took the place of triades.

• How long can tube amplifiers run unattended?
  A tube amplifier is made to operate continuously. However, this is not a suggestion. Most manufacturers advise against playing continuously for longer than 6 to 8 hours without at least a 30-minute cool-down period.

• Why is a tube amp superior?
  Solid-state overdrive is substantially less responsive and smooth than tube overdrive. Players have far greater control over the sound when high-gain pedals are added to the signal chain between the guitar and amplifier.

• How is a vacuum tube tested?
  In order to activate the tubes, turn on the machine. When it does, check for an orange, red, or purple glow. It’s typically a sign of a healthy tube if the heated filament inside the tube glows orange like the setting sun. It could be difficult to perceive the filament.

• Why is high voltage required for vacuum tubes?
  The electrons are accelerated toward the grid by a positive voltage, but the majority of them miss its thin wires and instead hit the anode, where they produce plate current (IP), which flows through the tube. If the voltage is high enough, the electrons may be repulsed all the way to zero or cutoff, which would result in a reduction in plate current.

• How hot are vacuum tubes?
  They are roughly 140 degrees F when in standby. The glass’s outside temperature is that.

• What happens if a tube amplifier is left on overnight?
  Leaving a tube amp on reduces the life of the tubes because they decay with use. There is a substantial quantity of heat produced by several tubes. Other components of the amp may become dry and harmed by this heat. When left on and unsupervised, tube amplifiers can be dangerous.

• Are tube amps prone to failure?
  Tube amplifiers do not crack readily. They are made to last and resist the strain that a musician performing on stage might put them through.

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>