What is your overall opinion of this product?
I bought this back in 2012 to record some sound effects for a play I was designing. Now in 2015 I have over 1,500 sound effects as well as concerts and meetings and lectures and voice overs. I carry this around with me every where and it never has let me down.
In fact I am waiting for delivery today of a Tascam DR70D that will be more versatile. But I still plan on carrying the DR40 in my bag for as long as it stays alive. In fact I may very well buy a back up DR40 just because it is so perfect for what it does. The internal mics sound OK, a bit too bright for me, but sound excellent for what they are. I use the stereo inputs and phantom power to connect a stereo shotgun mic (or any mic I want) and record top quality audio no matter where I am. Battery life is really good too. I have left it recording for hours on only 3 AA batteries.
I've also worked with and used various Zoom devices and the Tascam DR40 is better than them all.