UPC 799637775657

• Newest version.upgrade 02-Oct-2016-For MM turntable only.not support MC truntable yet. and package 6N2 tube.
• Acrylic box version, WITHOUT power cable. Weight:1.95KG, Size:256 190 70mm
• PCB is finished and all electronic components are already soldered. The panel and transformer and case, you will need assemble by yourself to complete the unit - easy work! after you can using it.
• 1, re-design the Gain swtich function. before ,it was through adjust output voltage to reduce output signal.and now. we through control V1 tube to setup Gain
• TOP NOTIC:For solve hum problems that some buyer respond to us, follow is the suggesion:.when you listening the music, use your finger touch this GND point. if the hum come to lower. that's mean your T10 not connect to really ground. please re-connect it to really ground.that's important

Upgrade log: 02th-Dec-2015, the Newest version.upgrade few options. 1, re-design the Gain swtich function. before ,it was through adjust output voltage to reduce output signal.and now. we through control V1 tube to setup Gain 2, add 3 tube cover for 3 tubes. more reduce the back noise then before. 3, add a FUSE. just in case for safe. 4, add a GND connect switch, that switch function is: setup the T10 direct connect to GND through power cord, or disconnect GND. default it is set to connect to GND. but some times. if you connect T10 to your digital amplifier or other AV amplifier and got loud noise. then .you can try to set this switch in "disconnect T10 to GND", that's because Asymmetric ground noise, now we find out that problem and solved it. More information of this phono preamp. you can google it. not let you know down, else. if you have any suggestion for this preamp. fell free message to me. if it's good suggestion, i will keep it. and upgrade that function in next version. NOTIC:for MM turntable only , PCB is finished and all electronic components are already soldered. The panel and transformer and case, you will need assemble by yourself to complete the unit - easy work! after you can using it. RIAA phono stereo, RIAA freq response 20hz-20kHz +/- 0.5dB, S/N ratio;92dB, THD;0.05 , input sensitivity 3.0mV, gain 50dB, ; Nominal / max output 300mV / 1.8V, Output impedance 200 ohms, input 62k ohm , Package included: 1 x PHONO preamp 3 x 6N2 TUBE 1 x 6Z4 tube 6 x panel 1x transformer 5x screws