XLR out on a tuner?


I'm new to hifi and not an audiophile yet but learning a lot lately.

I'm following a Denon DN-300H tuner on the big auction site. It looks very clean and has a remote. I also noticed on the rear it has XLR cable outputs as well as RCA out. Is this sought after? Worth paying extra for? My pre-amp (Acoustic Research LS16) has two open XLR input ports marked Bal1 and Bal2. The price on the tuner is okay and if using XLR cables through the balanced input on the pre-amp is an advantage I might just buy it.

Any assistance much appreciated.
n80

Showing 6 responses by celander

@n80. Did you relocate your ARC pre and CDP away from your amp and speakers?  
Given the price point of this tuner, I strongly suspect it is running its XLR outputs in an “unbalanced” configuration (that is, both return and shield are running to ground, like in a RCA interconnect).
Based on the Denon specs sheet, output voltage is the same regardless of the output selected. That’s not usually the case if the XLR outputs derive from a balanced circuit. Compare with the MD tuners having balanced XLR outs vs their RCA outs. The balanced outs are always 2x the voltage. 
As Cleeds said, if they used an op-amp on the XLR outputs to “split” the signal for balanced output, then each signal conductor would carry 1/2 the voltage. So that likely explains the equivalent voltage outputs from both balanced and single-ended outputs. (Or it could be simply a typographical error in their specs, and the balanced outs are rated with an higher voltage.)
Al, 1+

Denon appears to adjust their output voltages as they seem fit. It’s 500mV for both outputs of the DN-300H (otherwise, they would have stated so if they differed). It’s different for their internet tuner, but they do specify output level differences where they exist. See:
https://denonpro.com/products/view3/dn-350ui