This integrated amplifier sets sky-high standards
What HiFi

Edge A is designed to bring musical detail to life. It delivers a finely balanced sound with a depth and clarity that come through with every note. We developed the system by ear, testing every component and only choosing those that blew us away. The end result is a ground-breaking arrangement that produces a much cleaner signal path and lets your music breathe. Edge A perfectly delivers our classic British sound – nothing added, nothing taken away.  We pioneered the use of toroidal transformers in amplifiers, which led to improved performance. In Edge we take this one step further, using opposing symmetry twin toroidal transformers. This cancels out electromagnetic interference whilst offering outstanding power and maintaining consistent tonality, no matter how loud it’s played. Using standard Class A amplifier technology wasn’t going to be efficient enough for Edge A. Instead we added a bias voltage to a traditional Class AB design, reducing distortion to inaudible levels. This unique configuration also produces less heat and makes the whole system much more effective. 

CONTINUOUS POWER OUTPUT

100W RMS into 8 Ohms; 200W RMS into 4 Ohms

THD (UNWEIGHTED)

<0.002% 1kHz at rated power (8 Ohms); <0.02% 20Hz – 20kHz at rated power (8 Ohms)

FREQUENCY RESPONSE

<3Hz – >80kHz +/-1dB

S/N RATIO (REF FULL POWER)

>103 dB

CROSSTALK @ 1KHZ

< -100dB

INPUT SENSITIVITY

Input A1-A2 (unbalanced) 380mV RMS

INPUT IMPEDANCES

Input A3 (balanced) 47k Ohm; Input A1-A2 (unbalanced) 47k Ohm

INPUTS

Balanced, Coax S/PDIF, TOSLINK, USB Audio, Unbalanced, Bluetooth, Audio Return Channel (ARC)

OUTPUTS

Speakers, Preamplifier, Headphones (impedance of between 12 and 600 ohms are recommended)

USB AUDIO INPUT

USB Audio Class 2.0 supporting up to 32-bit 384kHz PCM, or up to DSD256

BLUETOOTH

4.1 (Smart/BLE enabled) A2DP/AVRCP supporting formats up to aptX HD

TOSLINK INPUT

16/24 bits, 32-96kHz

COAX S/PDIF INPUT

16/24 bits, 32-192kHz

MAX POWER CONSUMPTION

1000W

STANDBY POWER CONSUMPTION

<0.5W

DIMENSIONS

150 x 460 x 405mm (5.9 x 18.1 x 15.9")

WEIGHT

24.4kg (53.7lbs)

IN THE BOX

Edge A Integrated Amplifier; 1.5M Power Lead; Edge Remote Control; 3 x AAA Batteries; Bluetooth Antenna; Edge Link Cable; Edge A User Manual

I've reviewed many integrated amplifiers for Stereophile. Heck, Herb Reichert and I may together hold the record for most integrated amps reviewed in a single year. None has provided me with as much simple, exuberant, at times jaw-dropping fun as Cambridge Audio's Edge A  


Good synergies with Cambridge Audio's Edge A