Dilvpoetry TUBE-6K4 HiFi Tube Amplifier Preamplifier Replaceble 6K4 Tubes & Adjustable Treble Bass 2 Channel Stereo Tube Amp(Black)

Dilvpoetry TUBE-6J1 Mini HIFI Vacuum Tube Amplifier Product detailed parameters Color : Black Size: 118.5 * 98 * 33mm (excluding highlights) Pitch range: + 6dB Bass adjustment range: 10dB Product power supply; DC DC12V/1A Frequency response range: 20Hz-20kHz (3dB) Signal to noise ratio: 298dB Loss of alignment: less than 0.3% Input interface: gold-plated RCA Output interface: Gold Plated RCA Audio input: can be connected to mobile phone / computer / tablet / DVD, etc. Audio output: can be connected to power amplifier / active speakers. Package: 1 * Dilvpoetry X6 Pro DAC 2 * 6J1 tube 1 * 12V/2A power adapter 1 * Warranty Card 1 * Certificate Common problem: 1. Q : Why all my lines are connected, but there is no sound output£¿ Answer: 1). Check whether the POWER indicator is bright. If it is not lit, turn on the key and turn on the machine. 2).Press the boot button and the indicator is still not on, so you can find an equal voltage output (must be 12V) and test again. 2. Q: Why is the sound broken? Answer: This product is a pream product, but also has amplification effect. If the volume of the back-end equipment is adjusted to the maximum, and the front-end equipment is also adjusted to the maximum, then it is easy to distort, at this time you just need to turn down the front / rear equipment's volume.