Cleaner than the Sys...Ebay item # 253818627052...HiFi version. $40 or less, shipped. About what you would pay to build one. Promise..
Trouble is the minimum 1:10 impedance ratio.
It shows a 100kohm Alps passive!!!! and that will be a problem not for the source but with many poweramps
They should have made it 10kohm, that way all is good, except for <33kohm poweramps, which thank god there are not too many of.
Cheers George