Tube preamplifier with RIAA network
I'm building a preamp kit with JAN6418 tubes (order here).
Day 1 20100702
I received the package from Oatley. After verifying the contents I found that I received 2 resistors of 170KΩ instead of 180Ω, and 4 capacitors with a max voltage of 25V instead of 35V (in a circuit of 30V). The diode delivered was the wrong type and size as well, as were some C's.Day 2 20100704
I've soldered most of the components on the board. I need to buy some components that were wrong or missing and I need to measure the gain of the tubes to decide where to place which.![](http://farm5.static.flickr.com/4118/4760407966_2f5df89468_d.jpg)
![](http://farm5.static.flickr.com/4100/4759773875_74f1c335b1_d.jpg)
Labels: diy amp tube riaa
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