1=6.3mm 2=SMC 3=3.5mm 4=XLR

              I had posted about this issue earlier and was not able to respond as I was travelling. I am happy to report that PhoenixG was absolutely right about more than enough power. The Onkyo A7 is now purring smoothly and I am very impressed with its quality. The bass...

  I am using the the aux input at present and the pre power jumpers are in position, I will check if they are loose later today. Thanks for the input PhoenixG...I was very surprised with this as well as my HD 598s are not much of a load at all. I will check about the input levels as well. I...

I have always wanted to get into vintage amps and I am happy to say that I have taken the jump recently. I recently obtained a very well maintained single owner Onkyo A7 from 1977. I intend to use it only as a headphone amplifier at present and I was very impressed with its stepped attenuator...

Hi Mordy, you had uploaded a picture of a 1945 raytheon 6AK5 some time ago. Would it be possible to upload this picture again since the link appears to be broken now? Thanks for your help.

  Thanks for the prompt reply. I hope you will be in the best of health soon. Do you think there is a sound signature of the amp? 

Hi armaegis,   any chance for a full review sometime?

how about-   i-mufler i-gain control i-tranquil

does anyone know what is the max current drawn from the USB bus by the geekout?   edit- just saw some questions about this in the other thread and it appears there is no official information.

  How much can you adjust the volume before blowing your ears?

  Analog equipment has a much longer life than others.....there is no need for frequent updates without meaningful improvements. Frank just put up a review of the GS-X mk2 on part-time audiophile as he compared the corda classic to it. $ 700 vs new model $ 3000 and in his words -   "The Meier...

  I look forward to your impressions.....I looks really interesting

Thanks for the absolutely great information. It seems that you have spent some time, effort and money in discovering these gems. I am not really thinking about modifying preamps as my knowledge of electronics is poor at best. Hopefully sometime in the future. Any others that you have run across...

for any of you still reading this old thread....Goldpoint has a new 2014 Rev 14 with Perfected auto centering virtual ground section (I have no idea what that means). Is anyone using this new version or planning to get one? 

I am curious about vintage preamps. Have any of you tried to compare them with vintage receivers or integrateds? My thought process is that they might have lower output impedance but still enough power for the majority of headphones.

definitely interesting particularly with the gain switch on the front and you get an entire system from 250$

Thank you for your input. I am guessing I will buy this in a few months, so maybe I can try to learn how to solder by then.

Thanks for the input everyone. I guess I will scrounge up some cash in the next few months and get tomb's completely built version. I am not planning on driving something much more inefficient than the HE-400, so the power output is perfect.

No offense taken....I am realistic about my abilities and it is better to be safe than sorry. I have seen the built versions on Beezar and I was wondering is it possible to order a custom build? Basically is it possible to upgrade the capacitors?  Do you think 250 mW power is enough for the...

Hi everyone,   I have been a lurker on this thread a long time. Do you guys think that someone with no DIY experience (like me) can successfully build this amp? I am very interested in this amp and hopefully can try it soon. Also, what do you guys think about the power output ?

  I too am in the same position....baseline model among the first 100. I am going on a long trip for several months soon and unfortunately the geek is still not here. I am very disappointed that geek 1000 has been prioritized over people like us, they should perhaps have made this clear to...

It is definitely an interesting approach to parallel opamps like this.....Looking forward to impressions

Whoa the NSL is $20K.....you can't be serious!

So is it actually a little more than $1000 or substantially more....I suspect the latter obviously

How much did it cost you? It seems everyone already knows the frightening answer to this...