Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does it have a voice enhancement mode. Important to me because I wear hearing aids.
Document: Probably best suited for medium to smaller rooms. Very good, clean sound & ample bass output. The night mode is really nice for dialog enhancement. However I feel it is overpriced. It should have the volume shown as the default on the display, it should have at least one HDMI input, and a better designed remote.
The bar itself does a couple of very important things IMHO. The first is it is very good at channeling voice to the center speakers much as a center channel setup. This really helps dialogue come out clearly in normal TV and movies. One of the worst things is to have so much mid-level sound it muffles the dialogue. So very, very crisp here! Secondly, the volume and bass response is really great.
If you adjust the volume, it switches to the a numerical volume display but then automatically goes back to "ML". I don't think any user of this product cares to see the manufacturers initials showing on the display all the time. It's much more important to see the current volume level as you are switching from one input to another so you don't blast the speakers when switching inputs.
I have Verizon FIOS and was able to program the ML to the remote in a way that made sense the everyone in the family.Night mode sounds like a gimmick, but not to me. I'm a night owl that like to watch sports and movies I can't watch with the kids around.
I will say that the "onwall" option seems to be best no matter where you place the bar.Other than that pretty simple menu. Add or subtract bass. A night mode to decrease bass. A surround on and off, as well as some buttons for running through the inputs. Also you can dim or turn off the front lights.Overall, I am impressed as this simply does what it should very, very well.
I went out and bought the definitive as it was a new product and I love my definitive theater system. Needless to say it one did not work, two never really sounded good with shows like "The Voice", but did sound good with movies. Anyhow, because it failed I went back to check out the Martin Logan.Now there is a good review of the Martin Logan in Sound & Vision magazine. The bar itself looks very nice with nice curves and a piano black finish.
Pros: Clean clear sound. Night mode is great. Nice powerful bass. Attractive looks & good size. Convenient controls on top of unit, unobtrusive displayCons: Price. Could use an HDMI input. Display should show volume by default. Bass should be adjustable plus & minus (not just +).
I've had this sound bar just long enough to know that (1) it sounds great once you set the bass to normal mode, which luckily gets saved. and (2) it does NOT let you set a preferred input, and always defaults to analog, even if you have nothing plugged into the analog jacks. ARGH! it infuriates me that every time i turn my tv on, the soundbar comes on automatically (YAY) but sets itself to a useless input (BOO).
I tested this soundbar with a MartinLogan Dynamo 700 10-inch Wireless Ready Subwoofer, connected wirelessly.
So things will work out for us in the end but this is an issue with other products that I have seen. If you want a valid warranty, make sure your seller is authorized.
Answer: No voice enhancement mode but the "night" mode makes dialogue much clearer. I find myself using it all the time for that reason.