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

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.