I wanted a headphone jack at the top of the unit so I could use it in my lap without damaging the orig headphone jack or my groin- hah. I thought about having 2 additional jacks (1/4" and an 1/8") but for now just went with 1/8' for starters. Basic idea is daisy chain as many jacks as you want but only use one at a time so as not to strain or damage the circuitry. This turned out better than expected! Special thanks to my friends at madbeanpedals.com forums for helping me (because i don't know shit about electricity basically
Madbean thread: http://www.madbeanpedals.com/forum/index.php?topic=10416.0

pics of full process with captions in the link below:
https://plus.google.com/photos/10526638 ... q6H_LX5ogE



Also check the mic mod I did after this:
viewtopic.php?f=3&t=16227&hilit=mic+mod

really cool. i've opened some intrument to modifie or circuit bend but never really tought about opening the 404sx!

Thanks man, I am loving it!

Great mod! Happy to see the voltmeter out, that wire job looks super nice. Have you tried both headphones out at the same time? I'm picturing a small jam session with someone on an ext in instrument.

Double posted by accident, but I had another question anyways. Do you think this would work on the input jack as well? An SP with more in/outs sounds very attractive.

Thanks!

No, I was advised that using both at the same time could load the amp and possibly damage something. It prob could be done with a small add on PCB with another amp and some components.

as for inputs, maybe same story- get some advice from people who understand this sort of thing better before attempting- I have seen people do amazing things. Check out DIY forums like I did over at madbean.

EDIT: I might look into this at a later date including the multi input idea- this could be interesting. More likely is I will just add a 1/4" jack first in serial off the new 1/8" jack so I can use whatever headphones I want from the rear panel. I will post back here either way!

O

404 Hacker Elite

*BOWS*

Sat on the beach today for hours with it in my lap- I get a warm fuzzy feeling every time I plug my headphones into the top.

This is great! I always hated the positioning of the headphone socket cuz like you said, it gets beat up against you.

Nice one man!