Thanks for the recomendation of the MXL 603s mic for recording acoustic piano. I bought one, and already had an sm57. I burst out laughing when I listened to the recording. I must of played around for 15 min. trying to figure out why hardly any sound was coming out of the right speaker-(sm57 was right input). It didn't take long to figure it out. I bought another 603s and the recording is very good. It would be interesting to use very expensive mics to the 603s, so I could compare the sound, but I am not able to do that.