It depends on what you are recording. The other night at a show I tried to record through the internals for you--but it was a loud gig and the bass completely overloaded the mics. Unlistenable. But I have gotten very nice recordings with the internals under quieter conditions.
The ECM-719 gets around the bass overload by basically blocking a lot of bass and having low sensitivity. Look at its frequency response specs--the bottom note of a piano is 27.5 Hz, way lower than the Sony mic's 100 Hz. (Each octave doubles the number of Hz--the next octave down from 100 is 50, and then 25, so you're losing the lower two octaves of bass. Ears pick up 20-20,000 Hz.)
However, better mics--are those CA-14 still around?-- and a battery box would let you record through line-in without overloading. The battery power makes the mics themselves able to handle more volume, and going through line-in bypasses the built-in mic preamp that can also overload. So you would get much more full-bodied sound, with more bass recorded in high fidelity. For instance, I recently went to an electronic dance music show with outboard mics (old Church Audio) and a battery box, and got a very good recording with no bass overload, subwoofers and all. A good mic recording in mp3 sounds better than a bad mic recording at CD quality, if you ask me.
Topic: Newbiw to get new gear- what to get for a max of 300 euros? (Read 9629 times)