Not so Easy to Skip the Preamp?

4est

One of the reasons I thought I could get away with no preamp is because the Behringer has volume controls for each channel.

CBW723

Yes, it sounded so bad that I switched out the monitors, then made sure I was using the same cables and everything was fine.

Also, the DAC has sounded great in another application.

Re computer program, I use Windows XP and I am not an expert, but the OS usually recognizes whatever I plug in and it works fine.

For playback, I am using lots of different things, but Foobar and WAV files whenever I am testing, and in this case to discover how bad it sounded.

Re "sending" 16 or 20 bits or whatever.....not sure how to change those settings, but I think in "preferences" in Foobar.

But I am not talking about splitting hairs - I am talking about really pretty bad, muffled, veiled, distorted sound compared to the same amp and the same speakers and the same cables in another desktop system.

Everything is the same, other than the fact that the good sounding desktop signal first goes through a Behringer DEQ2496 which functions as a preamp of sorts.

So I would guess either an "impedance mismatch" of some sort, or insufficient gain, but again, a bit puzzling and appreciate all suggestions.

Oh...full disclosure....

As I was hoping to A/B compare this system with a leaner, meaner (?) Hagtech interface straight into the Audio Research DAC, I did not switch out the Behringer amp as that is what I am using in my other desktop system.

So I suppose there is a greater than 0% chance that the amp is defective or needs repair?

But I have a few of them and have generally had 0 sound or reliability issues with them.

So still a bit puzzled why it wouuld sound surprisingly bad, when all my other Behringer desktop systems have sounded surprisingly good.

I'm a little confused. Is your setup like this?:

Computer->Hagtech->DAC5->DEQ2496->A500->Speakers

If so, what role does the DEQ2496 play?

Better check the amp. You may have been lucky with the A500s, but I was not. For me, 3 out of 5 were bad, one within a month, two straight out of the box. I also found that the volume controls are not good—best to leave them at full output.

Main desktop system:

Computer USB to USB hub > Behringer Interface Box > Interface optical out to DEQ24 > Also, analogue out from Cablevision HDTV box to DEQ2496 > 2x Behringer A500 (in mono) > ATC SCM 7's and/or Epos ELS3's

In this case, I use the DEQ2496 as a "preamp" of sorts to switch between computer and HDTV. Sometimes, I also experiment with the RTA and equalize the speakers.

I was curious to see how much better the computer audio might sound if

a) I was using the Hagtech and SPDIF instead of the USB hub and optical cable and

b) I was using the ARC DAC instead of the Behringer DAC. (In this configuration, I am not using the 2496).

As I have spare ATCs and Behringer amps, I was otherwise hoping to "A/B" the demo, and was surprised when it sounded terrible.

Perhaps Ojgalli is correct and it is simply a bad amp. I have generally had much better luck however, using another pair of A500s since 2007, which I leave on 24/7 and use every day for both HDYV and computer...

Thank you, everyone, for all of your help and thoughts and Happy New Year.