Simple amplifier circuit to boost a weak line-level signal


#21

I would buy a PCB for this project; I have 3 Boutique instruments and have noticed the same thing about low levels, which is not so much of a problem for recording (I just run them through a good clean front end), but if i want to bring the Boutique into Euroland, things get wonky. You’ve built a beautiful little solution there…


#22

:joy::persevere::joy: Just like the first generation of iMacs?


#23

Exactly! I also plan to move it into an all-aluminum dark grey pro enclosure two decades from now… :wink:


#24

Thanks, but credit really should go to @pichenettes; I pretty much just did what he told me to. :slight_smile:

Let’s find out if there are others. I’ll see if I can get my hands dirty with PCB design and production if there’s enough interest.


#25

Tried to see if there’s any difference in noise between the small linear power supply and the Traco Power TRN1-1222 today. Here’s a normalized recording with the linear supply first, followed by the Traco Power.

noise.wav.zip (1.5 MB)

I can’t say I hear any real difference. Please note that this is with a TR-09 plugged in and the levels on the mixer and the audio interface all turned up.