Digital Front End: Critical Listening


I'm motivated to write this post after some initial comparisons I made between the DAC in my Marantz DVD player and my Levinson 360S. Using the Marantz as transport, these units fed into a Mccormack RLD1 pre, a Levinson 334 amp, and Celestion SL12si monitors. I realise this system is not your typical "high-end" system used for comparison.
The problem is that I couldn't hear much of a difference between the Marantz and the Levinson. Actually I felt a little foolish for having paid over $3000 for the Levinson when it doesn't seem to offer asignificant improvement. The Marantz is a mid-level DVD player with their "HDAM" technology which is said to replace op amps.
Can anyone offer an opinion as to why I'm not hearing not only a significant difference but drastic improvement with the Levinson. Could it be the Preamp not passing on the improved resolution offered by the 360S? Or maybe it's the speakers but I really don't think so.

Any thoughts?
sjh32
I have done more experimenting with digital sources than any other part of my system. I'm not a big experiementer, so this isn't saying a lot, but I've probably tried six different digital front ends a serious listen. I just have never found the differences to be big. The only front end I've heard what I thought to be a significant difference was a Muse Model 9 Signature player - it was still largely a qualitative difference, and one that I'd have been hard pressed to a/b differentiate.

For me, I either haven't heard or don't buy that a high-end transport or a high-quality digital cable is going to make enough difference to warrant the cost. There do appear to be some differences in DACs, but I attribute this mostly to voicing and preference.

Many will tell you that your system isn't resolving enough, your ears not trained enough, etc., and they may be right. For me, I have found it both liberating and cheaper to accept that there just isn't much difference.
I agree with the above posts. The different in digital is small.

I'm not starting fire,but digital VS analog is a big different.
I recently compared my older Adcom CD player (a very good model in it's time - with Class A circuitry) to my Ah! Njoe Tjoeb CD with upsampler (about $900). The Njoe Tjoeb was noticeably better.
I just added a Genesis Digital Lens to my system and WOW! My transport is just a cheapie Sony DVD player a'la Good Guys ($175.00). My DAC is the one onboard my Rotel integrated PRE/PRO. My system went from nearly unlistenable to incredibly detailed and involving. Speakers are Thiel CS2.4's. Our next move is going to be a Musical Fidelity Tri-Vista 21 Tube DAC. From there we are going to trade up pre/pros and a new amp. Definately check out a Digital Lens, made a world of difference for us.
Are you using a good digital cable from transport to DAC? That would be the other all new component in your system besides the DAC, going from a one-box player. Just a thought. A new cable getting some press is the Stereovox HDVX.

Don't ask me, tho, I still use a Meridian one-box player.

Good luck!