Camden EC2 Two Channel Preamp, Signal Processor, and Dual Headphone Mixer
Two discrete mic/line/hi-z preamps 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

Two instances of ‘Mojo’ analogue saturation circuits with variable control, true bypass, and 2 discrete styles - Thump and Cream
- 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

Two discrete headphone mixers with independant CH 1, CH 2, and Aux Input level controls
- Monitor the Camden preamps directly with headphones during mic placement to find the sweet spot of the instrument/source
- Create zero-latency artist mixes by combining the Camden preamps with external playback from Aux Input 14/” jacks on Camden EC2’s rear panel
- Use the reference grade headphone amps for critical listening by sending stereo mixes from the interface into the Aux input and monitoring directly using Camden EC2’s headphone outputs
- 'Stereo’ switch to pan CH1 & CH2 left and right in each headphone mix for true stereo monitoring

Two reference-quality, high-powered headphone amplifiers
- 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 outputs and impedance balanced ¼” jack outputs for maximum connectivity into audio interfaces and other downstream equipment

Dedicated Impedance balanced 1/4" Jack Link outputs for true instrument DI functionality and splitting instrument inputs to balanced or unbalanced amplifiers and effects

C.A.S.T. OUT port for connecting Camden EC2 into 500R8/500ADAT
- Transmit Camden EC2’s preamps 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 EC2’s headphone mixers
- All managed and distributed via a single shielded Cat 5e, Cat 6, or Cat 7 cable

C.A.S.T. IN port for connecting N22/N22H Cat 5 snakes to relocate Camden EC2 I/O elsewhere in the studio
- Receive 2 mic/line signals from N22/N22H directly into the preamp inputs of Camden EC2
- Transmit Camden EC2’s Aux 1 headphone mix into N22/N22H for direct monitoring by the musician
- 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
Camden EC2 Quick Start Guide:


All specifications are typical performance unless otherwise noted. All specifications are subject to change at any time. Tested with Audio Precision APx555.


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)


<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


>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


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


<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



AC Requirements

100V – 240V AC, 50 – 60 Hz

Total Power Consumption

24v, 1.25A DC, 30W


Operating Temperature

+1 to 35 degrees Celsius

Storage Conditions

-20 to 50 degrees Celsius





481mm (19") (Rackmount)


44.45mm (1.75") (1u)


240mm (9.5")

Unit Weight

2.8kg (6.2lb)

Shipping Carton



600mm (23.6")


120mm (4.7")


350mm (13.8")

Carton Weight

4.1kg (9lb)

A Complete Studio Front End

Camden Ec2 is a Two channel 19", 1u preamp featuring award-winning Camden preamps, Mojo analogue saturation circuits, and dual reference-quality headphone amplifiers with discrete line mixers.

Two Channel Preamp

Based on the award-winning Camden 500 Preamp and Signal Processor for the 500 series lunchbox format, Camden EC2 combines the sonic capabilities of one of the markets cleanest and most transparent preamps with the flexibility of a standalone, 1u, 19” chassis that can integrate into any recording setup with or without 500 series connectivity.
Dual Headphone Mixer
More than two preamps in a metal box, Camden EC2 features Two reference-quality headphone amplifiers with independant line mixers that allow for direct monitoring of both Camden preamps using headphones connected directly to Camden EC2’s front panel.
Camden 500 Camden EC2

Award-Winning 'Camden' Preamp Topology

Featuring two discrete instances of Cranborne Audio’s ‘Camden’ preamp topology, Camden EC2 achieves unprecedented low-noise and low-distortion performance as well as frequency and phase linearity at all gain settings.


Ultra-Clean and Transparent Performance
Camden EC2’s preamps exhibit performance specifications that rival and exceed the most revered ‘transparent’ preamps on the market.



With Vintage Mojo On Tap
With two discrete Mojo styles, Camden EC2 takes on the persona of vintage transformer-based preamps using its Thump Mojo or gooey tube-based preamps using its Cream Mojo.

Capture your audio sources with complete transparency; boost low-sensitivity microphones without adding noise; and capture instant transients without phase shifts that cause summing abnormalities.

Unlike transformer or valve-based preamps, Mojo’s saturation is completely variable allowing you to dial-in the amount of saturation you need for each source. Keep it at 3-4 for authentic preamp THD or crank it up to 11 for a more exaggerated effect.

Camden EC2 By The Numbers

Put simply, Camden EC2 is one of the cleanest, most linear, and transparent preamps on the market. Our ‘Camden’ preamp topology allows us to push the boundaries of Frequency Response, Phase Shift, Noise, and THD performance; and we have all the specs to back that up.


Equivalent Input Noise (EIN)

<-129.5dBu (150 Ohm source, unweighted) 

Frequency Response

±0.7dB (<1 Hz to >1000 kHz, 35dB Gain)

Phase Shift

<4° (20Hz to 20kHz, 63dB Gain)


<0.00025% (1kHz, 35dB Gain, +24dBu out)


For a comprehensive list of technical specs, check out the Tech Specs tab at the top of the page.


Ec2 headphone amps

Advanced Tracking And Reamping Tool

Two reference-quality headphone amplifiers with independant line mixers allow for direct monitoring of both Camden preamps using headphones connected directly to Camden EC2’s front panel. 

Headphone Amps Built-In
Monitor the preamp signals directly using headphones during mic placement to find the sweet spot of the instrument/source or create zero-latency artist mixes by combining the preamps with external playback from the Aux Input jacks on Camden EC2’s rear panel.

Link Output For Reamping
Connect your instrument to one preamp using the hi-z input, connect the ¼” Link output of that preamp to your instrument amplifier/effects pedal, and capture that signal using the second preamp. Record both preamps simultaneously and reamp the dry DI at a later date.

Camden EC2 500R8

C.A.S.T. Enabled

Using C.A.S.T., 500R8/500ADAT users can relocate Camden EC2's preamps and headphone amps into the live room using a single Cat 5e, Cat 6, or Cat 7 cable whilst freeing-up 500 series slots in 500R8/500ADAT for more EQ and Compressor modules and extra processing before hitting 500R8/500ADAT’s converters.

Signal Routing Before C.A.S.T
Signal Routing Using C.A.S.T.

Send Camden EC2’s preamps directly to 500R8/500ADAT's inputs ready for further processing and recording using a single Shielded Cat 5e, Cat 6, or Cat 7 cable.

At the same time through the same cable, 500R8/500ADAT transmit their built-in monitor mix directly to Camden EC2’s headphone mixer for monitoring.

The Cranborne Audio family

"The R8 is a recordist's dream, but for me I recognised that it was also going to be the perfect centrepiece for a hybrid mix setup, and it hasn't disappointed.

The guys at Cranborne have managed to produce something that not only sounds phenomenal, but is also extremely intuitive and fluid in use.

The flexibility of this unit is second to none, with a myriad of routing options available at the flick of a switch or the turn of a knob.

As soon as you start using it, it's obvious that this is a product designed by people that as well as being at the top of their game in terms of technical know-how, also work with music day in, day out,
and every feature has been put there in order to make getting a great end result fast and easy.

Great product, great people behind it, ridiculous price for what you get, what more can you ask for?!"

Matt Ransley

“…It's a beautiful piece of kit and my seven year wish of having an ADAT I/O enabled 500-module rack has finally come true."

"I mainly intend to use the 500ADAT as an outboard effects loop for my DAWs. 500ADAT is being used (via its ADAT I/O) to route a master drum track out to a pair of DIYRE Colour modules and then through a stereo pair of Radial EXTC's to add some dub-style echos via a Strymon Volante pedal."

"It sounds excellent and is exactly the type of workflow I've been wanting to use with my growing collection of pedals and outboard. Best of all it makes everything very hands-on and tactile which lends itself to mixing with my ears rather than with my eyes. Great stuff for getting out-of-the-box!"

"Thanks again for seeing this journey through to completion and for filling a much needed niche with the 500ADAT. It's going to get a ton of use here in my home studio!..."

W Todd Reynolds

"So we just ran a quick test with R8+camden against a Scarlett. Not scientific or anything, but holy sh*t is there a big difference."

"Added a bit of mojo and the vocal sounded pretty much done. It actually sounded like it was EQ'd and compressed, like a final track pretty much."

"I'm more than happy! Can't wait to get a real session going."

Jukka Lariola