I'm currently working on a portable amplifier that will be run off of a 3.7v Li-Ion cell, with a charging circuit (MCP73831/2) and a voltage booster (TPS61085)that will be able to supply between ~5 and 18v. It's been suggested to me to not try and create a split-supply amplifier, and instead use a single-supply opamp to drive my headphones. I'm aiming to be able to drive my DT880/600s, so I need quite a bit of voltage.
I'm having quite a bit of trouble nailing down the opamp though, there's such a huge selection and so many specifications to look at. Are there any commonly used SS opamps that someone can suggest? Thanks!
I'll post a picture of the current schematic later today, I'm not in an area that has one.
I'm having quite a bit of trouble nailing down the opamp though, there's such a huge selection and so many specifications to look at. Are there any commonly used SS opamps that someone can suggest? Thanks!
I'll post a picture of the current schematic later today, I'm not in an area that has one.
I am running a Decware ZenHead using DT770's. Sounds great and a lot better than the O2 I made recently.
Schematic etc can be found here.
ZKIT3 Personal battery operated headphone amplifier kit
Schematic etc can be found here.
ZKIT3 Personal battery operated headphone amplifier kit
I'm not looking for a pre designed amplifier, and the scale that I'm building this in is magnitudes smaller than the one you linked. I may build a medium sized amp later on, but if I do it's sure to be the O2.
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