You may can not believe, but would not feel the existence of the microphone amplifier If you use model390.
The sound of model 390,very clear,no stress and very natural!
<Specifications>
Input Impedance : 2.8k ohm(PAD OFF), 3.8k ohm(PAD ON)
Output Impedance : 600 ohm(Transformer Out)
Maximum Output Level : +20dBm(600 ohm load, 0.01% THD)
Maximum Input Level : -29dBm(PAD OFF,TRIM MAX) , +12dBm(PAD OFF,TRIM MIN) ,
-6dBm(PAD ON,TRIM MAX) , +30dBm(PAD ON,TRIM MIN)
Noise Level : -56dBm(TRIM MAX) , -86dBm(TRIM MIN)
Amp. Gain : +10dB - +50dB
Frequency Characteristics : 20Hz - 20kHz (-0.5dB)
Weight : 1,000g