Technical Specifications
Here is the comprehensive set of Camden EC2’s technical specifications. We try to keep our
specifications as real-world measurements. Each test has been carried out in a particular way
to replicate how each element of Camden EC2 would perform in day-to-day operation.
All specifications are typical performance unless otherwise noted. All specifications are
subject to change at any time. Tested with Audio Precision APx555.
Preamp
Test Signal Path
APx555 (Line Out) - Input 1 - Line Output - APx555 (Line In)
Input Impedance
Mic= 8.9 kOhms 48v Off, 5.4 kOhms 48v ON,
Line = 24.3 kOhms,
Hi-Z= 1.5 MOhm Unbalanced, 3 MOhm Balanced
Max Input Level
Mic = +17.6dBu (<0.003% THD),
Line = +26.5dBu (<0.02% THD),
Hi-Z = +24dBu (<0.02% THD)
Minimum Gain
Mic= 8dB, Line = 0dB, Hi-Z = 3dB
Maximum Gain
Mic = 68dB, Line = 60dB, Hi-Z = 63dB
Equivalent Input Noise (EIN)
<-129.5dBu (150 Ohm source, unweighted),
<-131dBu (150 Ohm source, A-weighted),
<-135.5dBu (Inputs common, unweighted)
Frequency Response
±0.7dB (<1 Hz to >1000 kHz, Min Gain),
±0.7dB (<1 Hz to >1000 kHz, 35dB Gain),
±1dB (<1.5 Hz to 900 kHz, 63dB Gain),
±1dB (<5 Hz to >200 kHz, Max Gain)
Phase Shift
<2.75° (20Hz to 20kHz, 40dB Gain),
<4° (20Hz to 20kHz, 63dB Gain),
<6° (20Hz to 20kHz, Max Gain)
THD+N
<0.00025% (1kHz, 35dB Gain, +24dBu out)
Intermodulation DIstortion
<0.0006% (50Hz and 7kHz, 35dB gain, +20dBu out),
<0.0005% (50Hz and 7kHz, 35dB gain, +15dBu out)
Hi-Pass Filter (HPF)
80Hz, -3dB, 12dB/Oct
CMRR
>70dB, typ >85dB, 35dB gain, 10-20kHz, 100mV Common mode
Slew Rate
20V/uS, 35dB gain, +25dBu out
48v LED Thresholds
Off = 48v Off, voltage fully discharged
Amber = 48v voltage charging/discharging
Red = 48v fully charged
Signal LED Meter Thresholds
Blue = -20dBu
Green = -12dBu
Amber = +21dBu
Red = +24dBu
Max Output Level
Balanced XLR = +27.5dBu (<0.002% THD, 30dB Gain)
Impedance Balanced ¼” Jack = +21.5dBu (<0.002% THD, 30dB Gain)
Output Impedance
Balanced XLR = 150 Ohm
Impedance Balanced 1/4” Jack = 150Ohm Balanced, 75 Ohm
Unbalanced
Link Max Output Level
Impedance Balanced 1/4” Jack = +21.8dBu (<0.006% THD)
Link Output Impedance
Impedance Balanced 1/4” Jack = 75 Ohm Unbalanced, 150 Ohm
Balanced (Buffered Output)
Camden EC2 User Manual
-Page 36-
©2020 Cranborne Audio Ltd
