Finished Tube PreAmp PCB -design upgraded to Marantz M7
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Upgraded M7 Tube PreAmp Finished Circuit Board designed for Marantz DIYER
(Tubes not inclued)

The following picture show the application of this finished tube preamp circuit board in a high-end upgraded M7 pre-amplifier available in my MAll

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Features:
This finished Circuit Board is for Tube Pre-Amplifier DIYer.
- With circuit design upgraded from famous original
- High quality of workmanship
- Each item have undergone careful inspection and test procedures
- High quality solder material used
- Components already soldered on the PCB. User just only need to complete the inputs, outputs and power sources and plug in the 3 tubes to get it works. Very suitable for DIY tube amplifier beginner
- Use 3pcs 12AX7/ECC83(not included)
- Require ~280V DC and ~12.6V DC power. (Common Pre-amp Power Board specially designed for our pre-amp series are available in our Mall)
- Components already soldered on the PCB. User just only need to complete the inputs, outputs and power sources and plug in the 3 tubes to get it works. Very suitable for DIY tube amplifier beginner
- Immediately add improvement to sonic characteristics of power amplifier. (Air, details, width and depth of sound stage)
- Components selected for improved sound quality
- Size : 190mm x 160mm
- 2mm thick PCB
- Come with circuit wiring schematic.
- Bare PCB as well as Finished product is also available in our ebay-store.
Important:
This product is only for DIYER with sufficient knowledge in electricity and know how to avoide danger from electic shock.
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