Preamp A - 15 : Mark Levinson No. 20.5 Derived

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xslavic

Member
Joined 2011
hello to the ones that like sounds : /
today i bought 2 preamplifier boards named A - 15 & described as :
- circuit came from modified voltage amp section of Mark Levinson No. 20.5, using LM394 (junction isolated ultra well matched monolithic NPN transistor pairs) as input device
board size: L 132mm X W120mm --

does someone have experience with this preamplifier ?
some usefull information please ,like the voltage range, operating class ,tweaks & improvements and of course BETTER alternatives

 
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