A Class Preamp schematic and tube amps question

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I am looking for a schematic of a A Class preamp which money can best buy.
I want to use this preamp with my turntable.
And I want to ask a question about tube preamps.
I think tube amps are hard to make because their power sources are hard to make.
Is it possible to build a tube preamp with a power supply which sold at local electronic store ? Or do I need to make it with a lot of money expense ?
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.