I still stand by my statement that music and audio can be enjoyed just as much single ended as balanced.
Both of them have their quirks. But IMO balanced drive is definately not the end all be all of headphone sound. It is nice however, but IMHO, balanced set ups is definately not something you want to skimp budget on, just to have the label of "balanced" in your profile. Its a direction I believe one would want to invest more money than less.
I think the best way of getting fully balanced sound is configuring a system from the ground up around the idea of balanced applications. Altering or modifying components never meant for balanced headphone applications may have different results from something that was designed for balanced headphone applications.
IMHO I wouldn't go balanced unless you are prepared to spend several thousands for the system. If its too much and you are on a budget, single ended systems are perfectly fine.
When you invest that much time and money into a balanced rig, going on a budget, you will most likely end upgrading all over again anyway.
Balanced drive was never meant to be a budget system. If you want the benefits of balanced applications, be prepared to spend a lot of money. Remember truly balanced systems are in elite territory and considered one of the upper most exteme of systems configurations, IMO it was never meant to be something for the tight budget.