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Cranborne Audio Camden EC1 Preamp, Signal Processor, & Headphone Amplifier
The Ultimate Performer’s Front End
Camden EC1 is an award-winning Camden preamp with Mojo analogue saturation, and a reference-quality headphone amplifier with a discrete line mixer built-in to a desktop-friendly, half-rack chassis.
- Discrete mic/line/hi-z preamp featuring the award-winning ‘Camden’ topology from the Camden 500 Preamp and Signal Processor for 500 series
- Audio performance at the near-theoretical limits of noise, distortion, and phase/frequency linearity at all gain settings
- EIN: <-129.5dBu, 150 Ohm source, unweighted, <-135.5dBu, Inputs common, unweighted
- THD+N: <0.00025% (1kHz, 35dB gain, +24dBu out)
- Intermodulation Distortion: <0.0006% (50Hz and 7kHz, 35dB gain, +20dBu out)
- Phase Shift: <2.75° (20Hz to 20kHz, 40dB gain), <6° (20Hz to 20kHz, Max Gain)
- Freq. Response: ±0.7dB (<1 Hz to >1000 kHz, 35dB gain), ±1dB (<5 Hz to >200 kHz, Max Gain)
- Unique 48v status LED
- 48v LED Lights Orange to indicate voltage charging or dissipating to prevent damage to ribbon microphones and to ensure voltage is fully charged before use
- 48v LED lights RED when voltage is fully charged and ready to use
- ‘Mojo’ analogue saturation circuits with variable control, true bypass, and 2 discrete styles – Thump and Cream
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- Thump excites low-end content by boosting lower odd/even harmonics from a range of 160Hz to 20Hz and below
- Cream boosts odd/even harmonics whilst also reducing the amplitude of the fundamental frequencies and applying typical transformer-style transient taming
- Discrete headphone mixers with independant CH 1, Ext Input, and Aux Input level controls
- Monitor the Camden preamp directly with headphones during mic placement to find the sweet spot of the instrument/source
- Create zero-latency artist mixes by combining the Camden preamp with external playback from Aux Input 1/4” jacks on Camden EC1’s rear panel
- Use the reference grade headphone amplifier for critical listening by sending stereo mixes from the interface into the Aux input and monitoring directly using Camden EC1’s headphone output
- Reference-quality, high-powered headphone amplifier
- Freq. Response: <±1dB, <1 Hz to >100 kHz
- Output Impedance: 0.33 Ohms
- THD: 0.0003%, 1kHz
- Output Wattage: 2x250mW @ 600 Ohm, 2x450mW @ 220 Ohm, 2x250mW @ 100 Ohm
- Balanced XLR output and impedance balanced 1/4” jack outputs for maximum connectivity into audio interfaces and other downstream equipment
- -10dB PAD to attenuate preamp output for lowheadroom audio interfaces
- Dedicated Impedance balanced 1/4″ jack Link output for true instrument DI functionality and splitting instrument inputs to balanced or unbalanced amplifiers and effects
- C.A.S.T. OUT port for connecting into 500R8/500ADAT
- Transmit Camden EC1’s preamp and Ext Input directly into 500R8 and 500ADAT’s 500 series modules inputs for recording/processing
- Receive a stereo mix generated from 500R8/500ADAT and monitor using Camden EC1’s headphone mixer
- All managed and distributed via a single shielded Cat 5e, Cat 6, or Cat 7 cable
- External high-current 24v, 1.25a power supply with latching connector
| 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) |
| 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 | 220mm (8.6″) (Rackmount Kit Available) |
| Height | 44.45mm (1.75″) (1u) |
| Depth | 240mm (9.5″) |
| Unit Weight | 1.8kg (3.9lb) |
| Shipping Carton | |
| Width | 360mm (14.2″) |
| Height | 120mm (4.7″) |
| Depth | 340mm (13.4″) |
| Carton Weight | 2.6kg (5.7lb) |
