Ok, I'm from Argentina, so I'll make some orthographic and spelling mistakes jaja.
 
I have a kenwood ka-400 stereo integrated amp, a pair of polk tsi 300 speakers, and I moustly listen to music from my pc (integrated sound card) and sometime from a turntable. My cuestion is what should i buy if i want to upgrade my sistem. I want to spend up to 600usd.
 
I've seen some dac's but i don't know if it will be better if i upgrade my pc sound car o my speakers or my amp...
 
One more question, do you think is better the technics Su-7700 or the kenwood Ka-400?
 
 
Thanks for answering.

Speakers always makes the biggest difference in any rig, don't let anyone tell you otherwise.
 
Buy some old second hand top-of-the-line B&W speakers from the 70's, 80's or 90's and you'll be amazed.

speakers, amplifier (if it's not good enough), and then DAC. it would help if your music files are lossless. 

Buy a dedicated soundcard first, such as the essence stx. It have a great dac chip inside

twoears said:

Speakers always makes the biggest difference in any rig, don't let anyone tell you otherwise.

Buy some old second hand top-of-the-line B&W speakers from the 70's, 80's or 90's and you'll be amazed.

Click to expand...

+1

Good used speakers would be a fantastic upgrade.

Speakers always make the most difference.  That being said your speakers aren't that bad.  Your amp is old but it really isn't that bad either.  
 
What kind of integrated sound do you have?  
 
Depending on how bad it is I might spend $150-200 on a USB DAC.  That's a sweet spot.  The small USB stick sized DACs in this price range are very good (Dragonfly, Audioengine D3, musicstreamer).