My MZ-RH1 mic in: -122.8 dBu noise floor

["jpbeale" jpbeale]

I think the Sony MZ-RH1 has already been carefully studied by many
more qualified. But just to add to the available data, I measured mine
to have an input noise level of -122.8 dBu (A-weighting) using the mic
input with "High" sensitivity and +30 recording level. Graphs from
RMAA are shown on the pages below. The mic input shows a bit more
rolloff at low frequencies than line input.  

http://beale.best.vwh.net/measure/audio/MZ-RH1_MIC.htm
http://beale.best.vwh.net/measure/audio/Sony_MZ-RH1_line-in.htm

Since my audio attenuator has an output impedance of 1 kohm it may be
slightly more noisy than a 150 ohm source (about -127 vs -129 dBu I
think).