chinsettawong

Hi Frank, That looks like a nice little amp. Thanks for sharing. Wachara C.

Glad to hear that everything is back to order now. About your question, personally I do not think that it's a good idea to keep the amp on all the time. Yes, it will take a little while for the headphones and the amp to be at their best condition. I would say 20-30 minutes of warming up is enough. Wachara C.

Have you checked if your fuse is blown? Wachara C.

Please count me in for 2 sets of PCB or assembled version. Wachara C.

Will there ever be another run of the T2 PCB? I'm so very interested in building one. Wachara C.

The 507 and 407 are indeed very close. The only thing that I notice is that the bass on 507 is a little bit better. Wachara C.

Insane!

I hope they are just BB guns.

Hi Forbigger, It's nice to see somebody who knows me. Thanks! I can't say that I'm as knowledgeable as Spritzer, but I do learn a lot about electrostatic headphones the hard way. Wachara C.

When a bias wire is about to come loose, you sometime can hear that tiny, random static sound too. You could open the headphones up and check; then maybe resolder the wire. Wachara C.

I just got my 407 today, and wow. Playing with my DIY amp, it sounds great. Wachara C.

What machines are those? Wachara C.