EDGE M
MONOBLOCK POWER AMPLIFIER
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Muscle with Finesse Perfect Partners
• CLASS XA AMPLIFICATION
• DC SERVO
• TWIN TOROIDAL TRANSFORMERS
• OPTIMISED FOR EDGE NQ
• LOOP OUT FOR BI-WIRING
The power to deliver
A pair of Edge M Monoblock Power Ampliers have the
power in reser ve to drive even the most demanding of
speakers with punch and clarity. Because each 200W
Edge M is fully balanced from input to output, they are
immune from noisy distortion and free to deliver your
music exactly as the artist intended – nothing added,
nothing taken away – whatever the volume.
Demonstration Tracks
At Cambridge Audio we use our ears constantly, both as passionate music lovers and audio professionals looking for test examples.
We test our products with all types of content and the following suggestions are our picks for a great demo experience for your customers.
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HUARACHE LIGHTS
by HOT CHIP
Why Ma ke Sense? (2015)
Bass and beats. Give your low range a proper workout with
this 2015 track by the indie electronica outt from Hoxton in
London. Edge M delivers all of the power from the rumbling bass
line but misses none of the high-end detail that gives the track
it’s sparkle and dynamism.
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THERE THERE
by RADIOHEAD
Hai l to the Th ief (2003)
Radiohead are the modern masters of luxurious soundscapes packed
full of unusual arrangements and instrumentation. A pair of Edge Ms
hooked up to an Edge NQ will release all of that glorious detail with no
sacrice to drive and timing. Just how many guitar tracks do you need
on one recording? Lots. You need lots.
Great British Sound
What does ‘British Sound’ mean? To us it’s about removing any barriers that might distort or alter the original
recording and not adding any of our own avour. What you hear from our products is a pure and unltered
‘British’ sound – just as the artist intended.
Muscle with Finesse
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As powerful as a pair of Edge M ampliers can be, they remain remarkably detailed. The sound is nely balanced with a depth
and clarity that comes through with every note. We developed the whole Edge system by carefully listening to each component
and only choosing the ones that blew us away. Nothing was picked on price or specs. We also took a fresh approach to some ageold hi- conundrums...
CLASS XA AMPLIFICATION
Using standard Class A amplier technology wasn’t going to
be ecient enough for Edge M. Instead we added a bias
voltage to a traditional Class AB design, reducing distortion to
inaudible levels.
In Class AB amplier design, distortion
occurs where the signal passes from one
transistor to the other. This is known as
the crossover point and if it occurs at zero
amplitiude it can be audible.
For Class XA, the crossover point is moved
so that one set of transistors is o until the
signal reaches a loud enough level.
This means that for low level signals, the
amplier is essentially operating as a Class
A amplier and it is only when the signal is
suciently loud enough that the transistors
switch over. Any crossover distortion is
therefore masked within the signal.
DC SERVO
During the amplication process, Direct Current is generated
as the audio signal is passed through the operational amplier.
This causes a shift in the position of the waveform and, if left in,
can overheat the speaker voice coil and cause distortion.
In a conventional hi- design, capacitors are used to lter out
unwanted DC. Whilst this eectively removes DC, it has the
unwanted side eect of colouring the sound, taking it further
away from what was originally recorded.
In the Edge range we replace capacitors with a clever DC Servo.
The DC Servo measures the amount of DC generated during the
amplication process and then injects an equal but opposite
amount back into the audio signal. This second dose of DC
cancels out the rst, leaving the audio signal in the right place
with no colouration.
A key engineering principle at Cambridge Audio is to keep the
signal path as short as possible. That way we let more of the music through without adding any of our own avour – the very
denition of Great British Sound.
TWIN TOROIDAL TRANSFORMERS
A key characteristic of toroidal transformers is the ultralow electro-magnetic eld they produce – a lot lower than
other types of transformer. Despite this, a small amount of
interference is inevitable.
By placing the twin transformers in Edge M back to back and
precisely orientating them, we can use the two EM elds to
cancel each other out, greatly reducing hum and delivering
increased musical detail whatever the volume.
Perfect partners
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Edge systems are designed to work in perfect synchronisation.
OPTIMISED FOR EDGE NQ
Match a pair of Edge Ms with our most versatile Preamplier
Network player, Edge NQ, to create a hi- system with a
sound, and a look, unlike anything else.
LOOP OUT FOR BI-WIRING
Use more than two Edge Ms in your system by utilising the
loop out connectors and bi-wiring your speakers.
Inside Story
We’re located in London SE1, right on the doorstep of some of the most creative, exciting developments in the music industry and
our products are designed and engineered in-house. Outside work we’re musicians, sound engineers and above all music lovers.
Five decades ago our founders had a vision – to create hi-
systems that delivered the Great British sound into people’s
homes. Nothing added, nothing taken away.
One of these talented engineers, Professor Gordon Edge,
was the brains behind the innovation and design of our rst
product – the ground-breaking P40 integrated amplier.
In recognition of our heritage, we developed Edge. The
embodiment of Cambridge Audio’s signature Great British
Sound and the pinnacle of 50 years of Hi-Fi expertise.
Beautifully minimal in its design, each component has a
curved extruded aluminium front and oating top plate. It’s an
extraordinary exterior that’s hiding some extraordinar y audio
engineering inside.
Developing a monoblock power amp isn’t quite as simple as just
removing a set of speaker terminals and boosting the power.
To make sure that Edge M followed the same sonic footprint as
its stereo counterpart, we deployed a fully balanced topology
from input to output. This means that each Edge M is immune
to noise and distortion no matter how hard you drive it.
We also kept to the same principles that delivered the
signature sound of the rest of the award-winning Edge range.
Short signal path, proprietary amplication techniques and
powerful power supplies.
All of this, together with some cutting edge electronic
engineering from our London team, means that Edge M can
take it’s righful place as a part of our agship hi- system.
Technical Specication
CONTINUOUS POWER OUTPUT (<1% THD+N)
THD (UNWEIGHTED):
FREQUENCY RESPONSE (INTO 8 OHM):
S/N RATIO (REF 1W INTO 8 OHM):
S/N RATIO (REF FULL POWER):
GAIN:
INPUT SENSITIVITY:
INPUT IMPEDANCES:
INPUTS:
OUTPUTS:
MAX POWER CONSUMPTION:
STANDBY POWER CONSUMPTION:
DIMENSIONS:
WEI GHT:
200W RMS into 8 Ohms
350W RMS into 4 Ohms
<0.002% 1kHz at rated power (8 Ohms)
<0.02% 20Hz – 20kHz at rated power (8 Ohms
<3Hz – >80kHz +/-1dB
>93 dB
>115 dB
28dB (RCA)/ 22dB (XLR)
1.7V RMS (RCA) / 3.4V RMS (XLR)
balanced 100k Ohm
unbalanced 47k Ohm
Balanced, Unbalanced
Speaker out, Loop out (balanced and unbalanced)
1000W
<0.5W
150 x 460 x 405mm (5.9 x 18.1 x 15.9")
23.6kg (52.0lbs)
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EDGE A
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Edge A is made to celebrate musicality. Ris, phrases, percussive
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the musicians.
TS V1.0 202010
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