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Old 1st March 2011, 12:24 PM   #11
suntechnik is offline suntechnik  Russian Federation
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Originally Posted by junjuvava View Post
and can you make a suggestion as to what kit/design might be a good choice for me?
If Hi End likeness is real requirement tube AIKIDO is a possible design. EF86 is another option. BF862 JFET design was discussed here on the forum.
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Old 1st March 2011, 01:29 PM   #12
BobEllis is offline BobEllis  United States
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If you are using a source that outputs 1V RMS and don't need gain, take a look at a Pass B-1. Boards are available here: Pass DIY: Order Form

Also look in the Pass forum for UGS and Pumpkin, although hard to find jfets are featured...

There are a few options here: Pavel Macura audiopage both opamp based and discrete designs. I haven't built them, but they seem to be well received.

If your sources are digital, consider a good DAC with digital volume control capability like the Buffalo-II The Buffalo II Digital-to-Analog Converter

Lots of choices, depending on how complex you want to go and how much you are willing to spend. Either my speakers don't resolve it or my ears can't, but I don't hear any degradation with several OPA2134s in the circuit. If you build an opamp based preamp, you can use a socket and try different opamps.

Despite not being able to hear OPA2134s, I did notice a difference with upgrading my power supplies from 7815/7915. I'm currently using the Jens Rasmussen supply from the group buy I did a few years ago, but shunt supplies are pretty popular these days. Check out the Simplistic Salas thread.
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Old 1st March 2011, 06:07 PM   #13
junjuvava is offline junjuvava  India
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Thank you, I must remind myself that my quest is 'high end' and move away from tone controls.
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