Microplane 901 ユーザーズマニュアル

5 

 

ANALOG INPUTS  The 901 provides both balanced and unbalanced inputs.  Input 
connections are made using the female XLR connector on the rear panel. These 
connectors are wired with pin 2 positive, pin 3 negative and pin 1 ground.  The unbalanced 
phono type jacks are wired in parallel with pin 2 of the XLR balanced jacks.  Connecting 
unbalanced and balanced signals simultaneously is not recommended. 

 

Model 901

 

Specifications 

 
GAIN 
Normal Mode   

 

 

 

 

-

∞

 to +10dB 

Boost Mode 

 

 

 

 

 

-

∞

 to +20dB 

 

FREQUENCY RESPONSE 
@ 0dBu out +/- .25dB   

 

 

 

22Hz - 120kHz 

@ 0dBu out +/- .5dB   

 

 

 

12Hz - 260kHz 

@ 0dBu out +/-3dB  

 

 

 

 

4Hz - 600kHz 

 

MAXIMUM OUTPUT LEVEL 
@ 1kHz, 50 Ohm load  

 

 

 

+23dBu (10.9Vrms, 30.8V p-p) 

 
INPUT IMPEDANCE 
40K Ohms balanced 
20K Ohms unbalanced 

 

OUTPUT IMPEDANCE 
5 Ohms 

 

DYNAMIC RANGE 
@ 0dB gain, 50 Ohm load 

 

 

 

116dB 

@ -10dB gain, 50 Ohm load   

 

 

121dB 

 

 

 

CMRR 
3.5Vrms in, 10dB gain  

 

 

>75dB 

 

DISTORTION 
THD+N 
10dB gain, +10dBu out, 50 Ohm load  

0.0051% 

SMPTE 
4:1 10dB gain, +10dBu out, 50 Ohm load 

 

<0.012% 

 

<0.05dB 

D\A SPECIFICATIONS 
Input sample rate 

 

 

 

 

44.1, 48, 88.2, 96kHz 

Input word length  

 

 

 

 

16 to 24 bits 

 

THD+N  
44.1kHz, 24bit, 1kHz, +20dBu out  

 

 

0.0016%