The fix is simple, as the planned obsolescence is programmed in the electronic components, get rid of them and use the pure hardware components.
The disadvantages are:
- lost the warranty (if any): we are going to do really bad things to these little friends
- lost the volume control: not a big deal could be regulated by the device (PC, phone..)
- lost the bass control: kind of annoying, could be regulated by equalisers
- lost the external amplification, the volume of the device will depend on the output power... No more parties with this guys
On the other hand the advantages are:
- not have to plug them to the external AC
- less components: more portable
- better bass sound: the box will be more empty now (yes, I don't know what to say more)
- not environmental impact and save money, you don't have to buy a new ones