Just purchased your 200 uamp digital meter from Amazon. It comes without any information. What is the current draw?  Also think the connector leads should be at least twice as long . Have you considered making a 9 volt battery adaptor to  5 volts? It could just snap on the battery. this would be great for quick assembly and use for this and other products.

Also interested in your treble bass/volume board. Where can I purchase it ?  Can you provide frequency response curves for this product. I am interested in improving the apparent audio quality of my tv audio.

Your products are impressive.

Thanks

Bill