Hi nippon, How are you ? It's me again ^^ I want to ask you 2 issues: 1, Can replace BD 139 and BD 140 in the other? 2, Is Matrix M-Stage is another clone version of the LC?   kind regards!

Hi everyone, When i switch the power off on my cube do both the leds go off at the same rate I have measured all points in the direction of nippon ( again, thank you very much ) everything is at an acceptable level, so I've replaced a few componen ( I have replaced the capacitor 470uF ) My...

Hi, Thank you very much, nippon ! I checked the DC off set , it's less than 50mV I bought the kit on ebay, components originating from China, that may be the problem ? although I do not use more than 50% volume, but if i use the gain, the hum destroy everything   kind regards!

  Hi everyone I have read your link with the help of google and I think my problem lies in the quality of the components, but I'm not sure I have connected the Alps poti to GND/Case,it was better but still not completely discharged hum I used the ATH AD900 while the "hum" appears, I tried...

 I got the "hum" sound right after i made my LC ( I haven't moderate it). When the volume is over 50%, the "hum" sound appear (Even if there is no input signal).

Hi guys, I am new member and lack of experiences. I wonder that: can adapter Ciso IP phones be used as power source for Starving Student (using 12AU7 bulbs) ?

My lovely cube has some problems.There are hum sound when the volumn is up to more than 30% loud.Does anyone know the reason and resolution for this problem?

 Hi guys, I have just made a Lovely Cube. I am trying IC OPA627AO but not sure about its quality. Would you please give me some recomendations? Thank you.