Originally Posted by doppler_pulse
Hmm, the same thing happened with my E+ that I purchased in november 2007; it died of over-discharging.
I noticed that the soundstage was more compressed with my older amp as opposed to the replacement I recently received . It also seems as if the overall signature is much more neutral as it doesn't add quite as much of its own 'flavour'. Then again, I still in the process of burning in (< 50 hours).
This is what I said to goodluck4u
regarding this issue:
"It is very possible that the difference you heard was due to the battery situation. Remember that in ALL audio amplifiers - the power supply is a critical factor. So it is very possible that your weak/defective battery was the cause of the difference in the sound signatures."
Based on your comment that that your defective unit's soundfield was 'compressed', I pretty sure that what you guys notice was indeed the effect of a 'poor' power supply on the MiniBox E+.
Outside of of the particulars of this situation, it is a perfect example of HOW MUCH effect a power supply can have on audio equipments ability to operate properly, or not!
This is one of the damnations of Audio. An AC power supply give you 'strong' power but loads of line noise. On the other side, a DC power supply give you 'weak' power (unless you going to use FRESH batteries, every time), but you don't suffer the line noise. The movement to Lithium and Lion rechargeables helps to resolve this situation to a certain degree. Not 100%, but a significant improvement.