Quote:     Thank you for your responses.   And sounds great, After my BA ship back to me, we can do that later.  

Quote: I talked with Craig this morning, he said "OK the amp appears to be good, but lost a connection to the left side of the headphone jack".   So I need to send my BA back to him next Monday. I hope I can get it back soon.

My BA has arrived this Friday, but it did not come out any sound when I set it up, so does any BA owner who lives in SF or bay area can help me to test or resolve this issue, thanks

Quote:   Nice pics!! Can't wait for mine.

Quote:     Nice pics!! Can't wait for mine.  

Quote:     Nice pics!! Can't wait for mine.  

I would appreciate that if you could do so for us, otherwise it will have to to send back to me and tighten them on my own.

This is my first loaner program, for Einar's VC01i balanced amplifier, one of my favorite headphone amplifiers. In order to share my appreciation for Einar, I decide to select 5 contributing members on Headfi (or non-contributing member with sufficient feedback for me to believe he/she is...

Does anyone konw where can buy the cheaper KR PX4'S tubes online? I guess I need a pair next month

Quote: Originally Posted by fkclo After countless rounds of email exchange with Craig over the last few days, finally Craig came up with a scheme whereby one can use both 300Bs and PX-4 on the same Balancing Act. I was so excited that I can hardly sleep last night. The scheme...

Quote: Originally Posted by fkclo Just got some clarification from Craig which I think will answer the same question from many of us. Quote : The PX-4 has a 4 volt heater, the 300B is 5V. The 300B in the BA requires a 750 ohm bias resistor, the PX-4 470 ohms. The true old stock...

Does KR PX4 can be used for 300B version of BA?

I saw that Craig had cancelled the AD1 option on the website, I am so disappointed. It has 307A and 300B options only. I am struggling between 307A and 300B now if there are only two options. I will make eventual decision after Fkclo's imprssion. Hopefully soon~

I only am curious how BA drives HD800 with single ended and balanced. I hope someone can post the impression soon