$150-200$ Preamp Build?

[samsagaz]

Hi guys, i want to build an preamp for my PC, i already build some amps, but my new sound card have an analog optput that need to be used with an preamp.

What recommend me? mainly i want to attenuate the level output. dont want to spend more than 200USD. If is possible to build osmething cheap with good specs will be great!



Regards

 

[adason]

so you want to amplify or attenuate...what is it?

 

[samsagaz]

so you want to amplify or attenuate...what is it?

Thanks, my english is not good

Mainly i want to control the output (loudness), i cant control it trough the PC, because the analog output of the sound card cant be controlled trough the PC.

 

[samsagaz]

was thinking about "stepped attenuator" thats why i type "attenuate"

 

[DF96]

Volume pot in a box, otherwise known as a 'passive preamp'. Unless your PC has a very high quality sound card, not worth spending more than $20 on it.

 

[KaffiMann]

Considering I'd prefer not to use normal pc soundcards above 0,4-0,6V output, suprisingly many tend to distort, even some of the supposed good ones. I think it is very reasonable to have some sort of buffer with volume on the analog out.

I have not tried any of these products, but from ska-audio you can get: SKpre + DualSKpreReg and a transformer and you're good to go, price seems very reasonable. Alternatively you can go for the cheaper Vbuffer solution.

Another very valid alternative would be a proper usb dac of some sort.

Edit:
What is the name of your sound card?

 

[samsagaz]

hi guys, the Sound Card are high quality one. I want to purchase/build some good one.

The sound card is an Onkyo SE-200.

•Signal-noise ratio: 115dB (2ch ANALOG OUT)
•Frequency characteristic: 0.3Hz～88kHz( 2ch ANALOG OUT , +0/-3dB )
•Line output level: 2.0V rms
•Digital IN sampling frequency: 32, 44.1 and 48, 88.2, 96kHz
•Digital OUT sampling frequency :32, 44.1 and 48, 88.2, 96kHz, 176.4, 192kHz