Confused about impedance/sensitvity - Page 2

Quote:

Originally Posted by faisal2003456 

It is one big memory pool though? Or will the internal flash and MicroSD be displayed separately?

If you buy a Clip+ I would strongly suggest toy install Rockbox on it.

But yes both Rockbox and the original firmware intergrate the microSD memory into the database.

The bonus of Rockbox in this case is it allows for folder borwsing which will allow you to easily select music from either the internal or external memory.

Also I think you are making way to much a deal about driving your RE0s. They will run perfectly fine from 97% of players at normal noise levels.

Decibels are on a logarithmic scale, remember?  Otherwise IEMs could run a block party. 

100db/1mw = 103db/2mw, 106db/4mw, 109db/8mw, and so on

Don't worry about the quoted power requirements too much; power's usually fine with IEMs; if it's not IEMs then you have worry about impedance variation between frequencies and peaks in the music. Source linearity, especially when loaded, is a bigger headache with portables. Also, shigzeo's measured some weird stuff with multi-driver IEMs like the JH13 and certain amplifiers(both in-player and discrete), and there was some debate about whether that was due to output impedance or the crossovers giving the amp a challenge. 

Sony outputs 5+5 mW at 16ohms

Having owned several DAPsi can confirm that

Sony are the least powerful.

Although my sony a726 sounds quite better than clip v2 or apple touch 3g, nano 4g, classic 7g, shuffle 2g ; in most respects

However it is not even as loud as the clip ,leave alone the apple players that are very loud 

I doubt any sony player will be able to drive RE0 at respectable volumes