Game Boy Pro Sound - A complete guide to DMG stereo line out mods 

Ahh thank you! I'm glad my scribbles helped! 😅

That's great, thanks for letting me know! I didn't know that about chip win, I'm sorry to hear that. I just posted a new video about the basic lsdj interface you may want to check out 😊

Ahh haha thank you! I'm glad the drawings helped!

Thank you! I was just thinking about this video and wondering if it had been useful to anyone 😅

Ahh that's so great to hear. Thank you!

Ahh fantastic! Thanks for the feedback

I hope it's still relevant!

Hope it was useful!

That's fantastic!

Awesome! I am really glad you found it useful

Thank you!

@@JoeBleeps realize this is an older video and older comment, but I'm almost brave enough to try this mod finally! Trying to decide between adding an 1/8" jack or doing the internal sound mod. Does the internal mod interrupt the speaker?

@@Two-Eyed_Boy yes! That's what I love about it. Good luck!

Great to hear! Thanks!

I really appreciate you taking the time to let me know. Glad it was useful!

Thanks for your feedback!

Thanks so much!

Thank you!

It really is very different. And delicate too!

@@JoeBleeps the job is actually a little less complicated, however i had to find out myself that the board was completely unique

@@x2bounty they made a lot of changes to pack everything into that smaller shell

Thank you!

Thank you!

Thanks I'm glad you liked it!

Thank you! I've not been posting videos for that long so you've not missed much 😊

Thank you!

If I ever make one again I'll definitely make a video

I could do yes! Might make for an interesting video. It's difficult to squeeze everything back in there so I'm reluctant to open it up while everything works 😅

@@JoeBleeps That'd be awesome! The thing I'm most curious about is how you ended up mounting the side switch to change which signal gets used. I ordered parts to set one up similarly, but I'm just a tad bit hesitant to relying on hot glue for a long-term solution haha. The other thing was which DPDT switch you ended up using, as I've found a few but I'm not too sure on how easily they'd be able to be used once installed.

@@jsfleming hot glue is a good solution if you pack the area with it so it can't move anywhere. That curved recess is pretty good for it. I think I superglued it in place then gradually added layers of hot glue

Good luck!

@@JoeBleeps Sadly it didn't work out, but through the right ear I could tell that all the hiss and buzz was completely removed. The interesting part is that both left and right speakers work when it is partially pulled out. Maybe you have an idea what may be the problem? Besides that, do you know what the negative effects of bypassing the earphone socket amp might be with the internal pro amp, if any? Cheers!

@@VanguardRaven maybe needs a replacement audio socket

@@JoeBleeps Not the case either, because that was the first thing I tried. Oh well lol

@@JoeBleeps Before I forget, do you know of any downsides to doing the internal amp bypass, besides the possible interference from a dirty potentiometer? Cheers!

It was a really small one, any should do. I often use ebay for stuff like that. This one had two rows of three pins so it's like an on/on Switch to swap between states. Having two rows meant I could swap between pre and post for two inputs at the same time, if that makes sense. It's not a mod I've seen done before and it's far from essential but it was fun to do!

I'd point you in the direction of www.heldergametech.com/ who posts as angryhelder on Instagram and Twitter. They did a lot of the work that R6 copied and make reliable products with a great reputation. They are also very helpful and will most likely be able to answer your questions. I use an external mixer to boost the sound but I can see how an internal amplifier would be useful.

That's a mod I've never done, as it happens!

It's doable for sure, essentially you'd have two wires to disconnect/ reconnect at a time. Would work better if you soldered to the points where you removed the two wires instead. I've found that to be not quite as good for the prosound but it does work, and would be better suited to the switch. I personally have no problems with using headphones after the prosound mod. Quieter, yes, but much cleaner sound.

It gets quieter with headphones due to the signal not being amplified as much for the headphones to drive them. it's still audible and useable in quiet settings. but it lacks some of the oomph, bass, and volume for me generally if i'm on a train etc. through an amplifier or mixer, it sounds so much better though!! I think the easiest compromise is having a seperate jack for Prosound, and keep the headphone jack for when you're writing on the go with headphones. just my experience.

It's definitely quieter than before through headphones but it's cleaner, so you can hear it more clearly at the lower volume. I use headphones with it and I prefer it to the original headphone input

@@JoeBleeps Great thanks. Just to clarify I use the IPS screen mod so maybe that introduces alot of hiss/hum from the power board? I'm not an expert on this stuff maybe ill try cutting some wires and do the prosound mod I got the stuff for it so maybe I'll try that.

@@JoeBleeps Went ahead and did the post pot method with the original jack and it sounds perfect I'm so happy, there's a tiny bit but its nothing and only audible with max volume. It works perfect with my RIPS V3 and I got the filtering cap mod into the power board the (470uf 16v cap) and that got rid of most of speaker audio to be happy with. It's still there but not as bad as before or my headphones before. Unfortunately the speaker still hums a little even when pot is all the way down. Would be cool to have the pot switch the speaker off like what happens when the headphones are in but when the pot is at a really low volume. That would legitimately make it perfect.

Okay that's a lot to unpack. I am glad you enjoyed it! 1 - if you're just starting out I would suggest the "internal prosound" mod. No extra parts needed, just some wires. The other options are fun but this is the one I always do as it's clean looking and sounds great despite being a simple job. I have other videos that explain this, I can point you in the direction of these if you need me to. 2 - Yes left and right outputs. These are the connection points to join up to the left and right connector on an audio socket you'll be connecting your cable to. 3 - yes it's possible to do as many jacks as you want and do the PS/2 mod as well, there is just more work involved. the PS/2 mod allows you to connect an external keyboard and use the game boy as a synth but to be honest I've only used it for that when testing these mods. It's not as much fun as actually creating sounds and sequencing them in LSDJ

@@JoeBleeps Thanks by heart for your answers! I did and prefer external prosound mod because I'd like to preserve the headphone jack even if unfortunately the external one requires trimming the shell. So I'd like to try the switch mod with RCA+JACK, in order to have the best of every possible combination (even if I'd like to add a 6.4 Jack too, but I don't know if there is enough room, I've seen your other videos). I only have one final question: I've carefully rewatched this video, and the only other thing I didn't understand is the ground pin and components. I'm not sure, but you say something like "after soldering everything in this way with the switch, every other component "-" should be soldered to the ground pin" So, in my opinion, let's say I have RCA and Jack: I need to solder the "ground" part of each of them to that specific ground pin in audio pot part. (I don't honestly know if it is a good idea, because it would become a mess with cables, so every gnd point on the motherboard should be fine) Do I have correctly got what you meant (solder every "-" on components to gnd points on the motherboard and every "+" on components to the switch) or did you mean something else?

@@prototype_925 the ground is common. The switch is being used to swap between the + connection on say the RCA and the 3.5mm socket.

I've always found my method works best for me, but I'm sure it's not too different

No it's a separate mod, all you're doing is bypassing the headphone amp so any capacitors changed on the main board should still have an effect

😊🙏

I have a couple of the EMS ones and a couple of Drag N Derp. Drag N Derp are great but very expensive, there are good newer ones available now but I forget the names!

I'm not sure. I've installed an amp before in a Gameboy but that was mainly for the speaker

Yes it does - that's a feature of the socket itself

I got those from Kitsch-Bent in the USA

@@JoeBleeps Thank you! :)

It's definitely a problem with the game boy. Possibly a case of cleaning the volume potentiometer or even the audio socket, check out my most recent video for a fix I did when one stereo channel was stronger than the other

@@JoeBleeps thank you! will do :)

No additional components needed. The hiss is generated by the headphone amp, if you wire up your connectors straight to the audio out points on the motherboard like this you'll get a much clearer signal, regardless of what connectors you choose to install. I hope that helps.

@@JoeBleeps It does! Thanks. How hard would that be to an absolute beginner with circuitry?

@@x2bounty not too hard but I'd suggest learning to solder wires to components first. With RCA the drilling and installation of the sockets is the tricky part

Yeah essentially it's a case of getting rid of the hiss at the expense of a bit of volume, but if you're plugged into a mixer that doesn't matter. I've tried out the capacitor mods on the gameboy color but I never really got into those mods as much because I always preferred making music with the DMG. There's some cool stuff you can do on them, for sure.

@@JoeBleeps thanks for the speedy reply joe love the videos love the content.

@@itsstucat thank you!

I sometimes sell them, but it's not too hard to do!

@@JoeBleeps how much will you sell one of those? i can't find where to buy the soundmod

Yes, there are a few mods for game boy Color but I've never found the GBC sound to be as satisfying as the DMG, so I've not explored them fully

That is very unusual. You shouldn't be getting that buzzing as you've eliminated the headphone amplifier

@@JoeBleeps Well the amp creates more of a white noise in the noise floor, right? While I'm getting an actual tone, and a high one at that the second I turn the system on.

I already cut the original connection and I'm pondering just trying to reconnect the old joints because I don't know what else to do.

@@garryoberholtzer5626 have you got an IPS screen in there?

@@JoeBleeps yes I do

What model game boy and mods have you got?

@@JoeBleeps original Dmg, and no other mods besides case.

@@atozee1500 strange. What type of pro sound mod did you go for?

@@JoeBleeps Yes so it's a dmg-cpu-06. I did the internal pro sound mod. I decided to turn the pre amp on the mixer down and now it's much better. I guess because i have to boost a low signal the noise floor also gets louder? what do you think?

@@JoeBleeps I found exactly what im experiencing. chipmusic.org/forums/topic/4543/filtering-dmgs-high-pitched-frequencies/page/3/ The first post describes it exactly. You might find this interesting.

Yes that would work, I've done it before and put a switch in line with the speaker wire, which does essentially the same thing

oh yeah having a toggle switch would be nice for when you cant find your earbuds or somethin

It's in the works! I was going to do one then I bought a new 3d printer and it's all a mess again!

The internal prosound is pretty much that. I can't see much benefit to swapping the parts out though.

That sounds interesting, the capacitors will serve to emphasise the bass. The mod I'm doing here is mainly to provide a clearer sound and then I use a mixer to adjust levels such as bass. It's fun to try different mods though!