Does this FET buffer circuit look familiar?

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I just got this completed board off ebay. $15 with shipping from China. Wondering if it looks familiar to anyone. Also curious if the design is any good. I'm hoping to use it as an output buffer for my cd player.
 

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Hi homemade,
that is cascoded complementary buffer, well known/used and nice performing circuit. Usually, it's made with 2sk170/2sj74.
2sk246/2sj103 are a bit different jfets (less transconductance).
Try it and tell us how does it sound
 

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Hi homemade,
that is cascoded complementary buffer, well known/used and nice performing circuit. Usually, it's made with 2sk170/2sj74.
2sk246/2sj103 are a bit different jfets (less transconductance).
Try it and tell us how does it sound
Hi
Is this buffer can work on Ucc=+/-9V or need something changed?
What needs to change the schematic to its input resistance is 1Mohm?
thank you
 
Hi
Is this buffer can work on Ucc=+/-9V or need something changed?

Remove R1, R2, R7, R8, Q4 & Q8, fit links on the PCB in the Q4 & Q8 collector/emitter position.

What needs to change the schematic to its input resistance is 1Mohm?
Make R6 1M.

Take a look at the input of the F4 amplifier buffer in the Pass Labs forum, also have a look at the DCB1 buffer as an alternative.
 
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Strange cascode.
In Juma's circuit, the base voltage of each common base bipolars is half way between the output and the rail.
In Homemade's circuit, R2 and R7 are in series and not connected to the output.
Using this connection, a fet associated with its bipolar do make not cascode at all.
 
thats ok for me,more sound from dac and of course cleaner amplification
but will the potentiometer work after it ?
-- i mean the pcb in post 2,i bought one on ebay and thought that the buffer will make that separation between circuits to make it possible to use pots
 
They are both nice circuits.
But usual is the problem to get those JFET from any shop.
That is why I would suggest a Diamond Buffer,
which only use nice common BJT bipolar transistors.
Will save the problem of getting devices.
 
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