I also wouldn't invest into a computer gaming sound card. If I wanted to build a PC for music it would use a high-end non-gaming sound card. Currently I'm using my Macbook pro with a USB DAC although the MBP and the iPhone do a pretty good job playing straight from the jack too.
I have Electro-Voice ELX112P:s for outdoor party / garden listening by the way. My mobile party set has a combined output power of 4,5 kilowatts I can host even a large party easily.
If the ESL you've listened has lacked also TOP end were you perhaps listening to the legendary Quad63's? They're quoted as the worlds finest mid-range speakers
Usually ESLs have extremely high quality high frequency response due to the operating method. But you need to sit absolutely in the sweet spot because you can hear the highs only direcly in front of the panel. Cheap ESLs are actually usually overbright because they lack the active correction required. A good ESL will have a shelving EQ circuit to correct the dipole roll-off and suck out the panel resonance bump. Also the size of the panel matters a lot, small curved ESLs I don't like either. For example Martin Logans smaller models - I can't stand them. Not directive enough and you can hear the muddy bass because theyre hybrid. Full range ESL (the size of a barn door) and a good dipole or kardioid sub is the way to go. Also transmission line bass is said to be excellent with ESLs but they're very bulky.
You misunderstood me,I said they lacked bottom end not top! The highs were too brilliant for my taste and the reason I said they sounded tinny...
I was in a proper "listening room" and I remember it was a tangent amp,the shop was trying to sell me some new speakers and since it was awhile back I cant remember all the particulars. IIRC they had a set of magna's and another ESL,I was looking at a used set of crowns but settled on the EV's their interface series D models.
Today I only really like to listen to records with all the hiss pops and crackles,IMHO digital sound just doesnt do it for me. I have a fairly large collection of old vinyl so if I really need a music fix there's always something I havent heard in a long time.
Sure I have CD's and a nice player but it just sounds "canned" to me. Tho with my hearing pretty much everything sounds that way!