Marantz model 7 still the one of best preamplifiers in golden era of analog recording.
Smart functional design from phono equalizer to last stage.
Marantz used finest components at that time,
made model 7 sound very good and familiar with music lover.
This unit has serial number 7-21777, it use Sprague Orange Drop capacitors
more than another Model 7 that I ever seen from Google. ;)
This might be repaired some points from the past and still promptly use.
But I need to replace components in signal path, power supply
and tuning some component's value to make Model 7 has more natural sound.
These photos below are current status before modification.
Will compare shot by shot again with improvement list and result.
Smart functional design from phono equalizer to last stage.
Marantz used finest components at that time,
made model 7 sound very good and familiar with music lover.
This unit has serial number 7-21777, it use Sprague Orange Drop capacitors
more than another Model 7 that I ever seen from Google. ;)
This might be repaired some points from the past and still promptly use.
But I need to replace components in signal path, power supply
and tuning some component's value to make Model 7 has more natural sound.
These photos below are current status before modification.
Will compare shot by shot again with improvement list and result.
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