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McIntosh MC275 motherboard, re-engraved version.
It is recommended that friends with DIY experience buy it.
This board also needs: power transformer, output transformer*2, electronic tubes (KT88*4, 12AX7*3, 12AT7*4), input terminals and potentiometers to assemble a complete tube amplifier.
This link only sells the board in the picture, if you need other accessories, you can contact us.
Board size: 330MM*160MM
Board technology: 2.0 board thickness, 2ZO copper skin, immersion gold