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JDS LABS Objective 2 with Titanium HD and DT990 250OHM Combo?

post #1 of 13
12/26/12 at 11:28pm
Thread Starter 

Hey guys this is the setup I have pretty much been thinking about going with. I already have the Ti HD driving my AD700s. But want an upgrade.

 

Would the OB 2 source be plugged into the 3.5 mm jack? Or the RCA outputs on the soundcard?

 

Any help would be great. Any advantages to the new C421? I am a noob as my name suggests this will be the best setup I have ever built just want to get it right the first time :)!

 

Thanks!

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post #2 of 13
12/27/12 at 12:57am
Quote:
Originally Posted by HeadphoneNoob1 View Post

Hey guys this is the setup I have pretty much been thinking about going with. I already have the Ti HD driving my AD700s. But want an upgrade.

Would the OB 2 source be plugged into the 3.5 mm jack? Or the RCA outputs on the sound card?

Any help would be great. Any advantages to the new C421? I am a noob as my name suggests this will be the best setup I have ever built just want to get it right the first time :)!

Plugging the O2 (or any other external headphone amplifier) into the Titanmium HD's RCA jacks would be the better choice.

The RCAs should provide a slightly cleaner analog audio signal, over the 3.5mm headphone output.

The Titanium HD can pass headphone surround sound thru the RCA outputs.

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post #3 of 13
12/27/12 at 7:59am
Thread Starter 

Thanks!

 

Do you just keep the volume low from the computer then and use the amp for volume control?

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post #4 of 13
12/27/12 at 9:47am
Quote:
Originally Posted by HeadphoneNoob1 View Post

Do you just keep the volume low from the computer then and use the amp for volume control?

 

I keep the computer's volume at its maximum and use the O2 for volume control.

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post #5 of 13
12/27/12 at 9:56am
Thread Starter 

Is the C421 an option aswell? Whats the difference between these?

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post #6 of 13
12/27/12 at 10:04am
Quote:
Originally Posted by HeadphoneNoob1 View Post

Thanks!

 

Do you just keep the volume low from the computer then and use the amp for volume control?

I guess it's better to set the sound cards volume as high as possible (maybe around 75% of max?)

and use the volume control on the external headphone amplifier.

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post #7 of 13
12/27/12 at 10:08am
Quote:
Originally Posted by PurpleAngel View Post

I guess it's better to set the sound cards volume as high as possible (maybe around 75% of max?)

and use the volume control on the external headphone amplifier.

I believe anything less than full volume from the computer will lower the dynamic range.

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post #8 of 13
12/27/12 at 10:13am
Thread Starter 

Alrighty guys. Thanks for the help.

 

Is this a good amp should I look at others? FIlo etc?

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post #9 of 13
12/27/12 at 10:29pm
Thread Starter 

Ill take that as a no.

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post #10 of 13
12/28/12 at 10:29pm

Maybe look into the Schiit Magni if your crunched on money a bit, other then that, I would recommend the O2 also.

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post #11 of 13
12/28/12 at 11:13pm
Thread Starter 

Thanks just got the 990 and o2 ordered! Cant wait!

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post #12 of 13
12/29/12 at 3:06am
Quote:
Originally Posted by spaark View Post

I believe anything less than full volume from the computer will lower the dynamic range.

 

In practice, if you have a decent DAC (at least 100-110 dB measured dynamic range) and use 24-bit output format, it is possible to reduce the volume on the PC by at least 10-20 dB without noticeable quality degradation (depending also on the actual loudness level). In fact, if you use the built-in amplifier of a sound card (like the Xonar Essence STX), the volume control could very well be entirely digital.

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post #13 of 13
12/29/12 at 1:34pm
Thread Starter 

Ya I only asked cause I kinda saw the soundcard as a preamp needing a clean signal out. Guess DACs work different.

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