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Product DescriptionFeatures:
* New Tube Pre Amplifier + 6K4tubes* 100% Brand new and high quality* Mini Size HiFi Vacuum Tube Pre Amplifier Stereo Audio Treble Bass Tone Control* Output end can connect to digital amplifiers, active multimedia audio devices* Audio signal input end can connect to computer, CD, phone, etc* Designed with treble and bass control function Specifications: Working voltage: DC 12V/1ATreble Bass Range: 6dBTHD: <=0.3%SNR: 98dBFrequency Range: 20Hz-20kHz(3dB) Dimension: approx. 118.5*98*33mmColor: Black,Silver(as pictures show) Package Contents: 1 * Tube Pre Amplifier (Power Adapter NOT included)2 * 6K4tubes Note:1. This is a pre Amplifier, not a power amplifier. It needs to be connected to the amplifier or active audio devices2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. FAQ: Q: all my wires are connected, but no sound output:A: First, Check whether the POWER indicator is on. If not, turn on the power. After turning on the device, the indicator is still not on, you can try an equivalent voltage output (must be 12 V) and re-tested.Secondly, if the light is on please check that the VOL knob weather is in the smallest state , and it is normal to rotate clockwise in the minimum state.Thirdly, If both of the above are normal, check that the playback device of the input source whether it is paused, muted, or minimized. Q: About voice breakA: this product is a pre-amplifier, also has the magnification function, if you adjust the preceding stage and latter stage device's volume to the maximum in the same time, then its very easily distorts, at this time you only need to turn the front or the rear level volume down a little bit. Q: why does the volume of the machine remain the same, but the volume of different audio sources (such as CD and then cell phone) is different?A: The output signal amplitude of different players are difference. For example, the mobile phone usually is 0.35 MV, but the CD is 1 V. Q: why is there a loud electric current in the horn?A: if you are not using the original factory standard power supply, please replace the power supply before testing. Many power sources in the market have a large interference coefficient will cause a very large current sound. Q: why do I plug in the input line and don't connect to the playback source and the speaker has a big buzzing sound?A: when using an unshielded signal line for on-load operation, the interference signal will enter the amplifier to amplify it. If you hate the sound, suggest that you replace the shielded signal line or unplug the signal line. Q: can I unplug the tube without power off?A: no, because the device is work with high pressure, it's very easy to burn out the tube. Q: can this machine connect to a phonograph / record player?A: at present, the phonograph / record player signal input is not supported, because the phonograph / record player's output signal amplitude is very small, it needs to work with the phonograph amplifier.
PaymentWe accept payment via Paypal only.Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.
Delivery details We only ship to confirmed Paypal addresses. Please comfirm that your paypal address is in line with your shipping address. Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. It takes about 7-15 working days to US; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.
Contact us We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us via “Ask seller a question” . We will reply your email within 24 working hours.
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Category: Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps
Location: Shenzhen