Little Bear T7 Vacuum Tube Phono Preamp, MM Turntable Preamplifier, Hi-Fi Home Audio for Record Player, Stereo Amplifier, Active Speaker;

Notice:
As a phono preamp, it is suited for MM turntables only. Do not support MC turntables.
As an AUX preamp, it is suited for devices like CD, DAC, PC, cellphone.
Please note as a phono preamp, it can only work with MM turntables. Please note your turntable should have no built-in phono preamp. If it has, please make sure there is a PHONO OUT/LINE OUT switch and you should put it on PHONO OUT position.
We do not recommend using it with class D amplifiers since most class D amplifiers have much noise.

Parameters:
1. RIAA phono part:
RIAA freq response 20hz-20kHz +/- 0.5dB, S / N ratio> 85dB
THD <0.05%, input sensitivity 3.0mV, gain 40dB
Nominal / max output 300mV / 1.8V
Output impedance 200 ohms, input 47k ohm / 220 pF
2. AUX part:
Input voltage: AC12 ~ 18V
Frequency response: 20 HZ - 20 KHZ
Input sensitivity 300 mv
SNR: 96 db
Total harmonic distortion <3% (1 KHZ)
Power range output: 0.2 W
Output impedance: 100K
Input impedance: 50K

Chassis size:
80×116×28mm

Net weight:
0.24Kg (0.55Kg with package)

Package includes:
1 x preamplifier
1 x power supply
2 x 6J1 tubes

What's more:
It will be better if its GND jack can be really connected to the ground, which can decrease the background noise to a very low level.
For MM turntables, please check whether your MM cartridge is the old version. If so. we suggest you to upgrade it as a new version one will bring much better sound.
Please keep T7 away from devices that can transfer signal like cellphones and routers.