• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

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Hello

Thanks for your comment. Fyi, all products are made by myself for personel collection but not for sale, just some case i use chassis from KIT, but 80% is DIY from A to Z.

In the begining, I use Tango and Tamura OPT, however recently my friends (Vietnamese) could do similar OPT but very cheapper so i have switched to Vietnam OPT which I could order as per exactly impedance i need.

@ JAMESBOS, I also have collection for full range speakers, however because i made too many tubeamp so i have to split my speaker systems into 4 ranges to offer the job for my amps.

Fyi, my current systems :

Low : tube amp 211GE vs JBL LE15A
Mid-Low : tube amp 300B Shuquang vs JBL D123 signature
Mid : tube amp UX345 RCA vs JBL 2441
high : tube amp 6C33C vs JBL 077 or Fountek CD2.0 ( optional )

CD Source : Sonic Frontier CD T and D/A
Phono : Denon DP57 with Clear-audio catride
Phonobox : 12AX7 Mullar
Preamp : VT-25 WE, with RCA & ballance out
Active Crossover : 5 x 6DJ8 = 04 lines RCA out

In fact i still not very happy with mid low range and have to focus to improve this matter. As well as to solve some problem with phase.

Tks n rgds.
 

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