class A eq amp - part 4

I added the switches to complete the schematic.

I also ordered the printed circuit boards from seeedstudio in China. This will take a few weeks but I already started the construction using the prototype board.



For now I simply put the prototype board in the box to evaluate it.
I checked the THD again and it flirts with 0.01% distortion, not bad at all for a simple 4 transistor circuit. My 5532 preamp clocks off at 0.007%.in flat position.

Now I have to wait for Chenzhen to complete this project.

update 27/08

Received mail from seeed to report missing information in my drill file.

update 31/08

Status is now shipping.

update 13/09

Delivered.