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Runtime for Mini3 Editions

post #1 of 2
10/25/09 at 12:56pm
Thread Starter 
Can somebody give me real-world (based on your own usage) run times for the high performance and extended run time editions of the Mini3. What headphones do you use?

After reading AMB Labs I've got these numbers. Are these accurate?

Mini3 High Performance: 10 Hours.
Extended Runtime: 20 Hours.
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post #2 of 2
10/26/09 at 12:09am
It is a question of math that depends in part on your battery.

AD8397 = 7mA/channel = 14mA
OPA690 = 5.5mA

So ~20mA draw for the opamps on the High power edition.

LMH6643/42 = 2.7mA/channel = 8.1mA

~8ma for the opamps in the extended runtime edition.

This does not include draw for items such as the LED, rail-splitter and draw for how loud you listen to the amp.

But all other things being equal, 250mAh 9V battery will last no longer than:
250/20 = 12.5 hours in high power edition
250/8.1 = 30 hours in the extended run edition.
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