Replace Silver interconnect cable , please advice

Just to be sure nothing simple is being overlooked, are you sure that the new speaker cables are connected with the same phasing? If the cable on one of the two channels has + and - reversed relative to how the cable on the other channel is connected, it would produce the symptoms you've described.

Also, if one of the XLR interconnects is miswired internally the same thing could happen. If you have a multimeter, check that pin 2 on one end is connected to pin 2 on the other end, and that pin 3 on one end is connected to pin 3 on the other end. If pin 2 at one end were connected to pin 3 at the other end (and vice versa), on the cable for one of the two channels, it would account for the symptoms you've described. If you don't have a multimeter, try reversing + and - on one of the speakers (or on an amplifier output) and see what happens; doing that would compensate for a reversal in an XLR interconnect.

Regards,
-- Al

Something else is wrong. Your Acoustic Zen Silver Reference II has 97% of silver and 3% of copper. I use Acoustic Zen Absolute that has only 1% of copper and have plenty of bass and amazing soundstage. Check cables with ohmmeter as Al advised.

Something is possibly messed up. You have excellent components that should give deep bass down to the mid-30s, pinpoint imaging and an expansive sound stage, and should be lively and frisky as a young colt. If you had said it was too lively I would have understood better.

Regards,

i'm getting bass but only on very high volume

checked the cable , - +
every thing look ok.

i bought the AMP and the PRE used (1 year old)
maybe there is something wrong with one of them?

maybe because i'm not using a proper DAC ?