LTC1799 Pitch Mod for SP303 // SP404 // SP404SX // ZOOM Sampletrak

a lil budding tradition of mine for the last couple NAMMs.
try to do something new with what you already have.

this time, i tried modding some samplers that i already own/cherish.

shout out to ben wizards for the inspiration

things i've learned so far:
SP202 crashes with very slight change in frequency so I did not mod

SP404 (OG) digital delay effect crashes DSP chip on lower pitch settings. heavy noise. no repeats.
occasional glitches and audio dropouts.
MFX 2 (tape echo) does NOT do this. neither does any other effect.
or seemingly anything else on the device for that matter.
bring the pitch back up or toggling fx on and off can bring it back. otherwise reboot and all is well. everything else is pretty smooth.

SP404SX soldering to tiny SMD stuff can be dangerous. all the other mods weren't too bad. this one was a b... i killed the audio twice, but was able to bring it back. WOULD NOT RECOMMEND
the mod itself works fine once you get it soldered
(better than the 404 OG, no delay crash) ,
but i thought i killed my SX for good. NOT FUN.

SP303 everything is smooth so far.
same with the ZOOM ST-224

overall, the stability of the devices seems strong aside from delay thing. sampling still works. sample playback. pretty much all general settings altho i did not test every single feature. button presses are not delayed by slowing down the clock.

i also tried this on an MPC500 and a microgranny w/o any luck :(

[mitchlemkemusic]

Can you possibly make a tutorial this is a game changer

[malmoene]

Dude is not trying to answer any of these questions. He's simply here to show off. I say this with hopes of getting him to answer. Lol

[mitchlemke]

It’s a circuit bent sp-404 basically you can circuit bend anything but it’s probably sketchy with the sp-404 as he said in the video. Would be cool to try on a cheap one though if someone posted the correct spots to solder so you don’t kill the machine

[DJDigitalJosh]

Modding SPs? Sounds Scarey. After reading the description... Scarier! Almost killed your SX? NOOOO!!!

[DarioMiticocchio]

Nice work! I’ve always wondered why they left out of the sp404 one of the most basic functions of any sampler… I miss this on it

[jacobsteel]

thank you very much! I've bent some other FX and was curious if this would work. Question: only one clock Xtal in the SP404 OG/first gen?

[JohnnyDub]

Hi Burnt....awesome work! Could you be so kind and tell me where on the board of the 404sx the clock is? A picture of your machines circuit would be very much appreciated...thanks! :)

[DieMasterMonkey]

Bent 404, that's whacky - I approve! :-)

[circuitben]

NICE! I did this to a 202 a few years back, got two on the shelf waiting :)

[MicrophonesInTheTrees]

Giving my 303 even global pitch would make it a dream come true. Gotta find out how to do this!!!

[DJFiBa]

Nice work, but why no answers to the comments. (In case you wanna answer, pls don't answer me but the other dudes who asked the good questions! ;)

[nodfactor]

So dope! Was this an easy mod to do? How can I be down, yo??

[zzzindan]

this is the coolest thing i've ever seen

[jclopez]

Can you please make a tutorial how did you pitch mod your sp

[Deadpool]

I need a tutorial for this and the headphone jack mod..i wanna build the ultimate sp