Features
Controls
Connections
Specifications
Dimensions
Features
Overview: The Cambridge Audio Azur DacMagic Plus is a high-quality
up-sampling digital-to-analog converter. The DacMagic Plus features a range of
components to enhance your music listening experience - these include a 32-bit
Analog Devices Digital Signal Processor (DSP), dual Differential Virtual
Earth balanced filter topology, and twin Wolfson WM8740 high quality DACs in
dual differential mode for excellent stereo imaging. Other features include a
choice of digital filters (linear phase/minimum phase/steep filter) and an
incoming sampling rate indicator which shows the original source quality. The
Cambridge Audio DacMagic Plus can effectively upgrade the audio from your computer,
your network music devices, game consoles, or standard CD/DVD player to truly
high-end, audiophile-quality sound.
Dual Wolfson DACs: The Cambridge Audio DacMagic Plus employs two very
high-quality Wolfson WM8740 24-bit DAC ICs in dual-differential mode for
excellent stereo imaging. Since each channel has its own DAC to process
information, completely separate and symmetrical analog filter circuitry can be
implemented. This implementation allows both the left- and right-channel
circuitry to operate identically, ensuring the DacMagic Plus delivers fantastic
sound-staging and stereo-imaging properties.
Dual Differential Virtual Earth Balanced Filter Topology: The DacMagic Plus
uses Cambridge Audio's proprietary Dual Differential Virtual Earth Balanced
filter topology, configured as a low-order two-pole liner-phase Bessel filter, in
order to take advantage of the achieved high-sampling rate. As a result your
music will have extreme linearity with greater dynamic range.
32-bit DSP (Digital Signal Processor): A 32-bit Analog
Devices ADSP2161 Digital Signal Processor (DSP) eradicates jitter, a problem
which blurs the timing information of reproduced audio signals resulting in
degraded audio quality. The DacMagic Plus intrinsically re-clocks all the audio
data - removing jitter, noise, and distortion in the process, so your music
sounds full and realistic. This is especially effective when listening to music
stored on your computer or media player.
ATF2 (Adaptive Time Filtering): The Cambridge Audio DacMagic Plus utilizes
an asynchronous up-sampling process called "Adaptive Time Filtering 2nd
Generation" that
intelligently interpolates (converts) incoming audio data from 16-24 bits (at
any standard sampling frequency between 32-96kHz) to 24-bit/384kHz for
dramatically improved musical reproduction. ATF2 will enhance the audio clarity,
richness, and dynamic range of your compressed music.
Aluminum Front-Panel: The DacMagic Plus employs a substantial aluminum
front-panel, plus an ultra-rigid, acoustically dampened chassis to prevent audio
distortion caused by vibration.
Horizontal or Vertical Placement: The DacMagic Plus can be placed in two
different positions (horizontal or vertical). It can be placed horizontally by
fitting the four small self-adhesive rubber feet to the bottom of the unit, or
vertically by using the large rubber base.
Controls
Phase Filter Select: The DacMagic Plus's 32-bit DSP employs Cambridge
Audio's own proprietary digital filter algorithms with three different filter
options available - Linear Phase, Minimum Phase, and Steep. Controlled from one
switch on the front-panel, they are extremely clever audiophile topologies
specifically developed for audio playback and all offer excellent sound quality,
but differ slightly to appeal to a wide range of listening tastes.
- Linear Phase Filter: The Linear Phase Filter is the same as used
in Cambridge Audio's flagship Azur 840C upsampling CD player. It uniquely
features 'constant group delay' which delays all audio signals at all
frequencies by the same amount - meaning all audio is fully time-coherent at
the output.
- Minimum Phase Filter: The Minimum Phase Filter does not feature
constant group delay, but rather has been optimized without feed-forward so
that the impulse response exhibits no pre-ringing in the time domain. Many
audiophiles have argued that the pre-ringing, as seen in nearly all digital
filter designs, may affect the transient attack of percussive instruments.
Minimum phase implementation eliminates this and is a technology only seen
previously in some extremely high-end CD playback systems
- Steep Filter: The steep filter removes undistinguishable
artifacts via re-calibration for a very slight roll-off at 20kHz, but an
ultra-steep drop to the stop-band just after 20kHz.
Note: These three filters are all of the highest quality, but
offer subtle differences for the user to enjoy. The type of filter chosen is
remembered for each input individually, so that it is possible to use one
for PC playback (via USB) and another for CD playback (via SPDIF).
Digital Preamp Mode: The Digital Preamp Mode is used to connect the
DacMagic directly to a separate power amplifier or active speakers. The DacMagic
Plus is supplied as default with Digital Preamp mode enabled. In this mode, the
output from the Unbalanced and Balanced audio outputs is controlled by the front
panel Volume control. If you wish to disable this mode (and have fixed
line-level level output from the Unbalanced and Balanced Audio outputs) switch
the DacMagic Plus off, then push and hold the Volume control in while switching
the DacMagic Plus on.
Ground/Lift Switch: When Grounded, the DacMagic Plus is connected to
the earth connection of the PC directly. When Lifted the ground connection is
made via a network designed to break any hum loops that may be caused by the
source equipment. The Grounded setting is recommended, unless audible hum is
experienced
Connections
USB Port: A rear-panel 24-bit/192kHz USB (type-B) port enables the DacMagic Plus to be
connected to your Windows PC or Mac computer. The DacMagic Plus will act as a very
high-quality DAC/sound-card with very low jitter for your computer, offering genuine Hi-Fi-quality
playback from your stored music and Internet radio. The DacMagic Plus is
both USB 2.0 (Hi-Speed) and USB 1.1 (Full-speed) USB port compatible. It will
also work with the new USB 3.0 ports where the PC will simply treat the DacMagic
Plus as if it were a USB 2.0 or 1.1 device.
- PC Compatible: With the DacMagic Plus switched to USB Audio 1.0
(this is the default setting), the DacMagic Plus will work with the native
Windows XP, Vista or 7 Audio 1.0 driver (no need to load any new driver) and
accept audio up to 24-bit/96kHz. With the DacMagic Plus switched to USB
Audio 2.0, the DacMagic Plus needs the Cambridge Audio USB Audio 2.0 Driver
to be loaded and can then accept up to 24-bit/192kHz (and support ASIO and
WASAPI Exclusive if required).
- Mac Compatible: No extra drivers are required to connect your Mac
computer. With the DacMagic Plus switched to USB Audio 1.1, the
DacMagic Plus will work with the native Mac OS-X 10.5 (Leopard) or above
Audio 1.0 driver and accept audio up to 24/96kHz. With the DacMagic Plus
switched to USB Audio 2.0 the DacMagic Plus works with the native Mac OS-X
10.5 (Leopard) or above Audio 2.0 driver and can accept audio up to
24/192kHz.
Note: Click
here to download the Cambridge Audio USE Audio 2.0 Driver.
Digital Inputs: The DacMagic Plus is fitted with two rear-panel
24-bit digital
inputs. Each digital input consists of an optical and coaxial digital
connection. The optical and coaxial digital input allow a wide range of digital
source (CD, DVD, Game Console, etc.) to be connected to the DacMagic Plus.
Note: Only one of the two types (optical/coaxial) of each digital
input should be connected at any one time. If both the optical and coaxial
inputs have connections made to them, neither will work. This unit only
decodes two-channel LPCM digital audio (Dolby Digital 2.0). If you connect a
DVD or similar device, please ensure that the audio output of the player is
set to two-channel PCM.
Digital Output: A rear-panel digital output (optical/coaxial) allows
pass-through of the selected digital source for recording purposes (no
up-sampling performed). These outputs loop or pass-through unprocessed digital
audio from the selected digital input.
Note: Both the optical and coaxial digital outputs are
always active and can be used to connect and run equipment at the same time.
A 5.1 Dolby Digital or DTS signal can be passed through the unit's digital
outputs. The 5.1ch signal is not decoded or processed (only pass-through).
Balanced & Unbalanced Outputs: The Cambridge Audio DacMagic Plus features
both balanced (XLR) and unbalanced (RCA) audio outputs to connect to a wide
variety of home stereo receivers and amplifiers.
- Unbalanced: The DacMagic Plus features an unbalanced stereo analog RCA
audio output for connecting your stereo receiver or amplifier.
- Balanced: The DacMagic Plus features true balanced XLR analog audio
outputs to connect high-end home receivers and amplifiers. XLR is a
higher-quality output that can reject noise and interference with equipment
with balanced inputs.
Note: It is possible to use the unbalanced stereo RCA output and
the balanced XLR outputs at the same time for connecting two different
amplifiers or multi-room operation. The analog audio outputs are muted, if
the DacMagic Plus receives a 5.1 Dolby Digital or DTS signal.
Headphone Output: The DacMagic Plus' front-panel headphone output
(1/4") allows for personal listening from your set of high quality headphones.
When headphones are connected, the headphone volume can be adjusted using the
volume knob. This is always independent of the level of the balanced or
unbalanced audio outputs.
Bluetooth Ready: Simply plug in the optional Cambridge Audio BT100
Bluetooth Audio Receiver (779BT100, sold separately) into the DacMagic Plus'
rear-panel USB (type-A) port for wireless music streaming from many of today's
most popular Bluetooth supporting devices; such as iPod touch, iPhone, iPad,
Android smartphone, Android tablet, and Mac or Windows PC. The BT100 even
supports the high-quality Bluetooth aptX CODEC, so you can stream audiophile
quality music from your Bluetooth-enabled source device to the DacMagic Plus.
Note: Due to the differences in Bluetooth technology,
some Bluetooth enabled devices may be incompatible, function improperly, or
may not support all features when used with the DacMagic Plus.
Power Requirements: The Cambridge Audio DacMagic Plus operates
off of standard household AC current,
using the supplied AC power adapter. The external power adapter
is separate from the digital-analog-converter to further improve sound quality.
- Input: 100-240V~50/60Hz,
0.55A
- Output: 12V - 2A
Note: The supplied AC power adapter includes AC power plug inserts
for North America, Europe, and the United Kingdom.
Specifications
D/A Converters: Dual Wolfson WM8740 24-bit DACs
Digital Filter: Analog Devices ADSP21261 32-bit DSP (up-sampling to
24-bit/384kHz)
Analog Filter: 2-Pole Dual Differential Bessel Double Virtual Earth
Balanced
Frequency Response: 20 Hz to 20,000 Hz (+/- 0.1 dB)
Total Harmonic Distortion:
- @ 1 kHz (0 dbBFs): < 0.001%
- @ 1 kHz (-10 dBFs): < 0.001%
- @ 20 kHz (0 dBFs): < 0.002%
Signal-to-Noise Ratio: -112 dBr
Total Correlated Jitter: < 130 pS
Crosstalk:
- @ 1 kHz: < -130 dB
- @ 20 kHz: < -112 dB
Output Impedance: < 50 ohms
Output Level:
- Unbalanced: 2.1V rms
- Balanced: 4.2V rms (2.1V per phase)
Digital Input Bit-Rates: 16- to 24-bit
Digital Input Sampling Frequencies: 32, 44.1, 48, 88.2, 96,
176.4, and 192 kHz
Audio Output Up-Sampling: Fixed 24-bit/384kHz
Headphone Output:
- Frequency Response: 10Hz to 100kHz
- THD:
- @1kHz: 0dBFS 24-bit signal with 22kHz low pass filter =
0.001%
- @ 20khz: 0dBFS 24-bit signal with 80kHz low pass filter =
0.003%
- S/N: -111 dBrA
- Recommended Headphones: impedance between 32 to 600 ohm
Power Consumption: 12 watt
Dimensions
Horizontal Orientation:
- Width = 8.5"
- Height = 2.0625" (2.1875" with feet)
- Depth = 9.3125
Vertical Orientation: (with stand)
- Width = 3.125"
- Height = 9.125"
- Depth = 9.375"
