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Small Objective 2 Review - Page 5

post #61 of 68
Quote:
Originally Posted by asak View Post

 

I have one but not a pair of them. Muses01 has 25mA max current output vs 70 mA for the recommended opamp. 

 

For what its worth, tried a pair of lme49720. Sounded brighter than the stock opamps but the bass punch was weak. 

thanks

post #62 of 68
Quote:
Originally Posted by asak View Post

I have one but not a pair of them. Muses01 has 25mA max current output vs 70 mA for the recommended opamp.

 

Do you mean the output (NJM4556) op amps ? I am not sure if those are what audionewbi referred to. In any case, it is not recommended to "roll" the output buffers, unless you cannot get the NJM4556AD for some reason.

post #63 of 68

I just received the Objective2 from JDS Labs last night and had the amp plugged into the wall with the AC/AC power adapter all night to break in some new IEMS.  This morning, the power button comes on but no sound through the headphones.  I see in the included "manual" the batteries need to be recharged if I hear no sound.  Even though the amp was connected to power all night, why would the internal batteries or plugged in still not produce any sound?

post #64 of 68
Quote:
Originally Posted by camui78 View Post

I just received the Objective2 from JDS Labs last night and had the amp plugged into the wall with the AC/AC power adapter all night to break in some new IEMS.  This morning, the power button comes on but no sound through the headphones.  I see in the included "manual" the batteries need to be recharged if I hear no sound.  Even though the amp was connected to power all night, why would the internal batteries or plugged in still not produce any sound?

 

Does the amp work on AC power? All O2's are pre-charged.

 

It's normal for O2 to disable output when the batteries are low. We test every amp twice (once on AC power without batteries, once again on battery power). So, this is most likely a power adapter problem.

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post #65 of 68
Sorry to go off topic but is there any plans to redesign O2 so the volume and input/output is at the smaller side for better stacking and transport?
post #66 of 68
Quote:
Originally Posted by audionewbi View Post

Sorry to go off topic but is there any plans to redesign O2 so the volume and input/output is at the smaller side for better stacking and transport?

 

Want to help track down an anonymous blogger? New O2 development is limited by the state in which NwAvGuy/RocketScientist left his projects.

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post #67 of 68
Quote:
Originally Posted by jseaber View Post

 

Does the amp work on AC power? All O2's are pre-charged.

 

It's normal for O2 to disable output when the batteries are low. We test every amp twice (once on AC power without batteries, once again on battery power). So, this is most likely a power adapter problem.

It did work last night, but now the batteries and adaptar will play for a few seconds and the sound will have static and cut back off.  Not sure what the problem could be.  I assume the batteries are drained?? but this shouldn't happen with the power adapter plugged into the wall as well.

post #68 of 68
Quote:
Originally Posted by camui78 View Post

It did work last night, but now the batteries and adaptar will play for a few seconds and the sound will have static and cut back off.  Not sure what the problem could be.  I assume the batteries are drained?? but this shouldn't happen with the power adapter plugged into the wall as well.

 

Defective AC adapter. We'll send another.

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