Product: SUCA-AUDIO Tube-T1 Preamplifier, Vacuum Tube Amplifier Buffer Mini Hi-Fi Stereo Preamp with Treble & Bass Tone Control for Home Audio Player (6K4 Tubes)
Brand: SUCA-AUDIO
Color: Bright Black
Features:
1.Compact design, space saving.
 2.Optimize integrated circuit and high quality power supply to minimize the noise.
3.6K4 tube can be replaced by 6J1, 6J4, GE5654, 6AK5.
4.With Treble and Bass control function, high playability.
5.Provide warmth, dynamic,sweet sound feeling.

Warm Tips:
✔It is NOT a phono preamp for turntable. To order a PHONO Preamp, please visit B07QBXV3CG or B07XHJ9ZND.
✔The preamp need to connect with a power amplifier or active speaker, can't connect with a passive speaker directly.
✔Don’t replace the tube when the power on, otherwise the tube & machine will be demaged.

About the Noise

Q: Why there will be a noise?
A:Low-quality rca cables and power supply will generate noise; Poor connection or defective of the vacuums tubes; EMI around the machine.

Q: How to Fix the problem?
 1.Wireless devices arround the preamp or speaker and audio cables contact with the machine will case emi, please check.2.Turn off the machine and well connect all parts(tubes, audio cables, power supply and etc.) again.
3.Turn on the preamp, minimize the volume, if still a noise, that maybe the problem of the power supply; 
4.If the noise increase simultaneously with the volume up , unplug the rca input cable. If there no noise, it is the problem of the rac input cable; If have, please check the output cable.
5.Burnning the machine/tubes for a period of time(about 48hours) may solve the problem.
6.If all above checking finish but not solve your problem, we provide 12 month replacement or refund.

Specifications:
Power Supply: DC 12V/1.5A
Frequency Response: 20HZ -20KHZ((±3dB)
SNR: 98DB
THD: 0.1%
Control：BASS, Treble, Volume
Treble adjustment range: ±6dB
Bass adjustment range: ±10dB
Audio Inputs/Audio Outputs: Gold-plated RCA

Package Include:
1 x Tube Preamplifier
2 x 6K4 Tube
1 x Power Supply
♪ NOTE - This is a preamplifier but NOT a power amplifier or a phono preamp, CAN'T be used for turntables or passive speakers. The main purpose of this machine is to act as a "buffer" to sweet the sound to achieve pleasant sound quality.
♪ RCA INPUT & OUTPUT - Input the sound source via your computer, CD, smartphone, iPod or other media with a RCA cable( Not Include), then RCA out put to the digital amplifiers, active multimedia audio devices for lossless audio(CAN NOT connect passive speaker directly).
♪ WARM TUBE SOUND - Vacuum tube preamp will give you a different acoustic enjoyment with dynamic, sweet tube sound enjoyment. Tubes detachable design, you CAN REPLACE the tube to tweaking the sound. 6j1,6j2,6J4,GE5654,6AK5 and 6*1n tubes are suitable for this preamp.
♪ BASS &TREBLE CONTROL - The vacuum tube preamplifier can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects.It ensures more delicate adjustment of music to satisfy your experience of different sound styles according to your preference.
♪ HIGH QUALITY & AFTER SALE SERVICE - Uses accurate and stable integrated circuits and high-quality components to eliminate low-frequency noise and ensure clear sound quality. The all aluminum alloy shell also makes it durable for use. We provide 12-month manufacturer's warranty, no risk purchase.

Search query: turntable preamplifier
Relevance: Exact