You are Russian and I mostly am too. Unfortunately I neither speak nor understand anything in your language. But I digress.

You indicate you are doing " beatbox " stuff. You only need an external soundcard if you are recording. Your computer's sound card is fine for monitoring & playback purposes. So if you have created beatbox from a sample library on your hard drive, an external soundcard is not necessarily, necessary. You only need the external soundcard if you are going to feed microphones into it or an external mixer/preamps. So the external soundcard is not 100% necessary if you think the sound of commercial CDs and/or DVDs already sound good to you. It's really only necessary for recording applications.

Too bad I'm not a vodka lover. Only in my bloody Mary's.
Mx. Remy Ann David

RemyRAD, I want to buy a new sound card, because my intergrated sound card in laptop gives big latency and it's hard to record and monitoring what I'm doing.

Good, you are now being more specific. Most external soundcards that can utilize ASIO drivers along with a feature called " no latency pass through " is what you need, indeed.

The closest external USB sound card device I can think of in your budget is made by a division of Roland keyboards EDIROL, UA 1-EX. I really love mine. The one thing you should understand about this device is that it is strictly line level in and line level out, unbalanced on RCA connectors (at least they're goldplated).They cost approximately $80 US and maybe more predominant in your neck of the woods. Of course it's capable of 24-bit/96 kHz. But I'm an old-fashioned girl and still run it at 44.1 kHz/48 kHz. The bit depth is selected in the software since it has 24-bit converters. I have had mine for well over five years and it has given me no trouble from fairly hard use. I actually prefer it to my M-Audio Transit, since the UA 1EX seems to have a smoother more analog tonality than the clear plastic like quality of the Transit. And the Transit does not have no latency pass through so it's a pain in the butt. The 2 cost the same thing, well nearly, the Transit was $5 more.

One more thing about the UA 1EX is that it does offer an optical port for output purposes and it also has a 1/8 inch TRS single microphone input which really has no use in a professional audio application. God knows why they put that in? Imagine that. A manufacturer spending another $.25 to include a connector that was not necessary. So why don't inexpensive Chinese condenser microphones still Don't all have capsule pad switches?

If the world made sense, we wouldn't be here.
Mx. Remy Ann David