Seventh Circle Audio

tpryan \$m[1]: These are SOIC-14 surface mount packages with 50 mil pin spacing. If you doubt your soldering abilities at all, do everyone a favor and order an assembled module.

Hi, I know you use That Corporation products in a different Preamp, I have some THAT 300P14_U 4-Matched NPN Transistors; can I use these components in this project? I have very little experince with SOIC-14 soldering. Is it possible to have the old PCB for the DIP case transitors?

By the way your preamp are the best!

I have very little experince with SOIC-14 soldering.

If your through-hole soldering skills are good, you shouldn't have a problem with SOIC packages. The lead pitch is large and they are easier to remove than through-hole DIP packages if you make a mistake.

Is it possible to have the old PCB for the DIP case transitors?

No, but we can sell you an assembled module. Besides, the earlier revisions used TO-99 cans, not DIP packages.