Over time the caps on the (Power Amp Board) & (Protectioncircuit board) can deteriorate due to heat from the large 

heatsinks. This can have a affect on sound quality. Even if your amp is in good working order,it should sound better with this upgrade.

The new caps not only have a  the higher rated  105oc rating so they last longer. They also have a lower (ESR) & (Higher Ripple Current). This will help in lower distortion & noise.

Even if your amp is in good working order,it is worth doing this upgrade too prevent future failure. 

It turns out Marantz used 85oc capacitors which where prone to early failure instead of the higher rated  105oc.  

The parts supplied are high quality  capacitors with a life expectancy of around 5000 hours or more. They also have a higher temperature value of 105oc than the original 85oc ones.  

 (Full instructions with detailed pictures will be supplied with the kit.)  

My kits come with detailed instructions & pictures which are easy too follow. No knowledge of schematics is required. Even if you can't read schematics,you should be able too perform this fix.  

  (Too perform this fix you need to be some what comfortable with a soldering iron & willing too take your amp apart)

 (Disclaimer) (Read Carefully) 

  The pictures are for illustration purposes only too demonstrate before & after the repair. The only parts included in this kit are (Capacitors) unless other wise stated.  

 They do not include PCB boards or any other parts. This kit was developed for someone who has no understanding of little experience of electronics. Even though schematics are supplied,i also include pictures with instructions & perform the repair. 

Beware of other sellers who sell similar kits who claim there kits are superior when they simply are not. They will fail too tell you there kits do not contain instructions.

Not only do I own these amps,but i have also developed these kits myself.

A certain level of skill is required in order too perform this repair.

There is a risk in any repair that you can cause damage removing or replacing any parts,so care must be taken.

All Capacitors included have Positive & Negative must be installed correctly otherwise these will explode when the amp is switched on.