Technics SU-Z2 refresh or modification

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Dear Friends,

I found a 30 year old Technics SU-Z2 amplifier (not the only one of the seventies worth to refresh).
I would like to refresh of modify the electronics, esp. caps, diodes, resistors.
I would very much appreciate your advices which manufacturers or types you prefer to establish sound qualities which meets at least moderate highend expectations.
Who can provide me with an electronic plan ?
Best regards
Goetz
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.