Replacement Module
for Vintage Mark Levinson
DOA006B-JC,DOA007A-JC,DOA008A-JC
DOA006-JC is replaced the class A line driver for JC-2,ML-1,ML-6.
A set of DOA007-JC and EQ card is replaced phono section
for JC-2,
ML-1,ML-6.
DOA008 is replaced ACTIVE LOW NOISE DC POWER SUPLLY FILTER
for JC-2,ML-1,ML-6.
The circuits of DOA006 and 007 are configured two-stage
differential
amplifier and push-pull buffer output .
The first stage differential amplifier is operated by constant
current control.
The circuit of DOA008A consists of the hi-speed down regulator
which is made up of the discreet parts.
DOA 006B,007A and 008A are made up of the finest available
discreet parts and devices which are monolithic dual FET,
vintage metal can transistor,
selected mica & polycarbonate film condenser etc・・.
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