I'm waiting for
@Slater to weigh in. My guess is he knows the answer to this riddle...
Both are doable, the double entry method and the single entry method.
As you guys pointed out though, method 1 would be expensive, and both method 1 and 2 could be disastrous if you are not an experienced modder. Would it be worth possibly ruining a perfectly good X2 under the assumption that balanced may or may not sound any better? That’s up to each individual.
The X2 isn’t particularly difficult to drive, so I am not really sure a balanced mod would provide such an improvement that it would warrant the work and risk involved.
Anyways, here’s my thoughts on each method:
1. For the double entry cup version, since you will be using 2 L cups, you would need to sand off the rectangular alignment notch on the bottom of the L baffle (being used on the right side) so that the baffle could be flipped 180 degrees. This would allow the driver to face the correct direction. You would also obviously need to rewire each jack.
The other difficult thing with this method is the glue that holds the cup pivots is pretty tough stuff. The Pivots are plastic, so extreme care must be taken to dig out all of the glue without damaging any of the plastic.
2. For the single entry method, you would need to find a TRRS jack that fits in the same space as the stock circuit board. You would also need to wire it up properly.
One bonus to #2 is that there is a specific way to wire up the TRRS jack so that a balanced cable OR a normal 3.5mm single ended aux cable can be used. This bonus wiring method would require a specially built balanced cable, as it would not use a normal balanced pin TRRS configuration. The aux (single ended) cable would be a standard run of the mill aux cable however.