Model 101, Specifications – Boulder Amplifiers 101 User Manual
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Model 101
Specifications
GAIN RANGE
Mic input 5dB steps
10-60dB
Mic input 5dB steps High gain version
20-70dB
Hi-Z input 5dB steps
-10-40dB
Hi-Z input 5dB steps High gain verzsion
0-50dB
Output trim attenuator
0 to -10dB
THD+N
@20dB Gain +20dBu out
<0.00085%
@40dB Gain +20dBu out
<0.0010%
@60dB Gain +20dBu out
<0.0050%
IMD (SMPTE/DIN 4:1 7kHz/50Hz)
@40dB Gain +20dBu out
<0.0020
NOISE (EIN)
50 Ohm source
<-130dB
150 Ohm source
<-128dB
600 Ohm source
<-124dB
CMRR
100Hz
>68dB
1kHz
>75dB
10kHz
>65dB
PHASE DEVIATION (HPF off)
50Hz-25kHz
<6 degrees
FREQUENCY RESPONSE
Mic input @40dB Gain -3dB
4.5Hz-400kHz
Mic input @40dB Gain -0.5dB
12Hz-170kHz
Hi-Z input @20dB Gain -3dB
3.0Hz-300kHz
Hi-Z input @40dB Gain -0.5dB
7.5Hz-300kHz
IMPEDANCE
Mic input
1600 Ohms
Hi-Z input (unbalanced)
1.0M Ohms
Hi-Z input (balanced)
2.0M Ohms
PEAK LED METER
Green threshold
-20dBu
Red threshold
+16dBu
MAXIMUM OUTPUT LEVEL
100k Ohm load, 0.1% THD
+25dBu
CROSSTALK
None!