This is an awesome recorder in theory. The mics are excellent, full rich sound. The options, ins and outs, excellent ! Once you get the hang of its UI and understand the flow of signal through each app you can start imagining how you can use this recorder in different situations. The technical specs are also excellent. The AD/DA is high quality.
Unfortunately the one I had purchased had a major defect. After recording four songs, each with the same set up - about 20 minutes of usage - the recorder started to send repetitive signals to my two tracks. Warning for something ? No messages, no indication about what was wrong. Out of the blue repetitive hammering sounds. This sound was recorded on the tracks so my recording was unusable. I stopped recording and turned the recorder off. Started about an hour later and listened to the damaged recording. The recorder started gently hammering again while listening, independent of the recorded hammering, then I heard the recorded hammering too ... I read the troubleshooting section of the manual. There was nothing related to my problem. I am disappointed and frustrated. Returning it today. BTW, the SD card I have been using works perfectly in my computer. So the problem is in the recorder not on the recording media.
I am still giving 3 stars for all the conception and the quality while it worked properly during the first 20 minutes. May be I was sent a defective unit. But I will not try another one for now. I lost confidence in the recorder.