With discrete line mixers.

Featuring two discrete instances of our 'Camden' preamp topology developed for Camden 500, Camden EC2 achieves stunning low-noise and low-distortion performance as well as frequency and phase linearity at all gain settings.

Combined with our custom Mojo analogue saturation circuit, Camden EC2 can take on the persona of a vintage british-style transformer-based preamp using Thump, a gooey tube-based preamp using Cream, or an astoundingly clean and natural preamp when Mojo is bypassed.

Two reference quality headphone amplifiers with discrete line mixers allow for direct monitoring of both Camden preamps using headphones connected directly to Camden EC2's front panel. They may be configured to create a zero-latency all analogue monitor mix combining the local Camden preamps with playback incoming from an external playback source via Camden EC2's rear panel Aux Inputs.

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)

Headphone Amplifier
Test Signal Path:
APx555 (Line Out) - AUX Input - Headphone Output - APx555 (Line In)

Frequency Response:
-1dB, <1Hz to >70kHz

THD:
<0.0006% (-104.4dB) @ +20dBu, 1kHz, A-weighted, 300 Ohm load

THD+N:
<0.00085% (-101.4dB) @ +20dBu, 1kHz, A-weighted, 300 Ohm load

Output Impedance:
0.33 Ohms

Output Wattage:
250mW x 2 @ 600 Ohms, 1kHz
650mW x 2 @ 220 Ohms, 1kHz
1.21W x 2 @ 100 Ohms, 1kHz
500mW x 2 @ 32 Ohms, 1kHz

Dynamic Range:
114.5dB A-weighted, AES17 method, 20Hz - 20kHz, 300 Ohm load

Noise Floor:
-93.5dBu A-weighted, 20Hz - 20kHz, 300 Ohm load

Power
AC Requirements:
100V - 240V AC, 50 - 60 Hz

Total Power Consumption:
24v, 1.25A DC, 30W

Environmental
Operating Temperature:
+1 to 35 degrees Celsius
Storage Conditions:
-20 to 50 degrees Celsius

Dims/Weights
Unit
Width: 481mm (19") (Rackmount)
Height: 44.45mm (1.75") (1u)
Depth: 240mm (9.5")
Unit Weight: 2.8kg (6.2lb)

Shipping Carton
Width: 600mm (23.6")
Height: 120mm (4.7")
Depth: 350mm (13.8")
Carton Weight: 4.1kg (9lb)