Need help TEAC Sac UD504

I am buying a new dac and have no chance to audition any. Currently using Musical Fidelity VDac2 with VLink192 and their Vpower supply (3piece combo). Have any one heard the Teac ud503? Will use it as a dac and as a preamp for my system.

Is this a upgrade in sound or a side shift? Currently listening mostly ripped red book and sacds. Little high resolution material and no dsd, but moving in that direction soon.
Thanks in advance for any feedback, especially if it's on the ud503.
I have the TEAC UD-503.  A fantastic DAC.  Very versatile. Smooth presentation.  Choose no upsampling or various upsampling up to DSD. Works as a pre-amplifier if desired. Remote. True balanced. Line inputs also.  I'm very satisfied.
I have an integrated amp and do not wish to fiddle with 2 volume controls. Will I be able to bypass the pre-amplifier in the Teac and just use the volume control on the integrated amp? Thanks
I did not get the ud503 as planned. However from my earlier research, there are both fixed and variable outputs on this unit, thereby you could use it as a dac and connect direct to your integrated amplifier and control it from there.

Ud503 tried with Coax input from blu-ray player, sounds very dull thick mid, bloated bass, high's seem to be normal, overall not to my taste