Thank you for considering to make a donation  

As this service is very time consuming, and even though I now have added Google AdSense and Amazon ads, I can only encourage you to support this project by making a small donation via the PayPal donation button to the left, whenever this free service has helped you.

Please use the Share/Upload function if you have an HI-FI audio Schematic or Service Manual and want to share this with your fellow audio DIY’ers.