Products > Crowd Funded Projects

Porter - a headphone amp for musicians

(1/3) > >>

neighborhoodcircuits:
Hi all,

I'm launching my first-ever product on Crowd Supply, and thought you might be interested in taking a look: https://www.crowdsupply.com/neighborhood-circuits-llc/porter

In short, it's a headphone amp that is designed to make it easy to use your own effects pedals. Most other headphone amps out there plug straight into the guitar and come with a number of built-in effects. That's nice and all, but I really wanted to use the effects that I or my friends had built, and toggle them with my feet (since my hands are kinda busy). I think it's much more effective to practice the same way you would play live (hence the "for musicians" part).

Porter has a bunch of other nice features, like a belt clip, a rechargeable battery. and a line-in for playing along with a song or backing track.

Please have a look and let me know what you think!

neighborhoodcircuits:
FYI, I am also working on documenting the design on Hackaday: https://hackaday.io/project/196611-porter

floobydust:
Looks really good. For something like this, I add ESD protection because headphones, guitars, walking around makes a lot of static electricity which nails IC's and damages them.
It's the male end of the 3.5mm or 1/4" jack when jacking in, zaps it. From the other end of the cable.
This could be at least a series resistor to the first TL072 input, or clamp diodes. A pair of clamp diodes like BAT54S or BAV99 from the headphone out to the +/-5V rails.

bob8819:
 You need to make him pretty.

neighborhoodcircuits:

--- Quote from: floobydust on July 15, 2024, 07:30:32 pm ---Looks really good. For something like this, I add ESD protection because headphones, guitars, walking around makes a lot of static electricity which nails IC's and damages them.
It's the male end of the 3.5mm or 1/4" jack when jacking in, zaps it. From the other end of the cable.
This could be at least a series resistor to the first TL072 input, or clamp diodes. A pair of clamp diodes like BAT54S or BAV99 from the headphone out to the +/-5V rails.

--- End quote ---

Thanks! I was thinking along similar lines for the production unit - likely an input RC to cover both ESD protection and RFI rejection.

Navigation

[0] Message Index

[#] Next page