Spec:
Item Type: Electronic Tube Phono Preamp
Material: Aluminum Alloy
Model: T9
Audio Input: Stereo AV, phono MM (MC)
Audio Output: Stereo AV, 3.5mm earphone jack
Earphone Impedance Range: 16-300Ω
Earphone Output Power:
250mW at 32Ω
100mW at 64Ω
60mW at 128Ω
AV Input:
Input Level: 0.775V RMS
Output Level: 1.5V RMS
Input Impedance: 100K ohm
Signal to Noise Ratio: ≥106dB
Frequency Response: 20Hz-20KHz (±0.5dB)
Phono Input:
Input Level: 0.005V RMS (MM), 0.0005V RMS (MC)
Output Level: 0.6V RMS
Input Impedance: 47K ohm (MM), 330 ohm (MC)
Signal to Noise Ratio: ≥80dB
Frequency Response: Reference RIAA ±2dB
Total Harmonic Distortion: ≤0.1%
Electronic Tube: 2 x 6E2; 2 x 6A2
Treble Bass: ±10dB
Backlit Color Adjustable: Green, Orange, off
Size (WxDxH): Approx. 154x87x47mm / 6.06x3.43x1.85in

How to Use:
Use according to the instruction manual.

Package List:
1 x Electronic Tube Phono Preamp
2 x 6E2 Electronic Tubes
2 X 6A2 Electronic Tubes
1 x Connection Cable
1 x Screwdriver
1 x Supply Adapter
1 x Instruction Manual

Note:
1. The bias and gain of the two 6E2 electronic tubes have been set before leaving the factory. Please pay attention to the left and right channel markings on the electronic tubes during installation and do not plug them in the wrong direction.
2. The 3.5mm earphone jack is preferred. If AV output is required, please ensure that the earphone jack is disconnected.
3. Pluggable electronic tube socket design, 6A2 can be easily replaced with 6K4, EF93, 6BA6, W727 and other electronic tubes, enjoying different styles of electronic tube sound.
4. T9 is a preamplifier rather than a power amplifier and needs to be used in conjunction with an amplifier or active speaker.