ifi ZEN CAN Manuale utente
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Thank
you
for
purchasing
the
CAN
from
ZEN
series.The CAN isa
balanced
audio
amplifier.
1.
Power
switch
This
is
the
power
switc
h.
2.
Input
channel
switch
U
se
the
button
to
choose
betw
een
the
following
input
options:
Input
1:
RCA
Input
2: S
ingle
-e
nded
3.5mm
Input
3: Balanced
4.4mm
3.
Gain
selection:
0dB/6dB/12dB/18dB
Always st
art
from
0dBand then
incr
ease
the
gain level
to
attainan
enjoyable and comfor
table
level
of
volumefrom
th
eheadphon
es.
Warning:
at
the
outset
do
not
useexcessive
gain,
otherwise
damage
to
hearing
or
connected
headphones
may
ensue.
AMR
/iFi
audio
Is
not
responsible
for
any
damage/injury
from
misuse.
4.
Analogue
Volume
Control
At normal listening
levels,
thevolume control should bearound the 12
o'clockposition.
Increase
the gain level to enjoya higher listening l
eve
l.
5.
Single
-
ended
6.
3mm
output
For connecting single-ended 6.3mm headphones. With single-ended
3.5mm headphone
s.
connect
with
a 3.5mm to6.3mm adapter.
6.
Balanced
4.4mm
analogue
output
Forco
nn
ec
ting
balanced
4.4mm
h
ea
dph
one
s.
Tip:
As
ZENCANisbalanced,
we
recommend
the
4.4mm
output.
7.
XBass9 LED
XBass
•
(O
n
/Off)
was
uniquely
designed
to
ex
tend
bass response
to
suit
diff
erent
headphones.
It
isa pure anal
ogue
signal cir
cuit.
8.
3D
•
Matrix
LED
The
30•
Matrix
(on
/o
ff)
recreat
es
a
hol
ograp
hicso
und
fi
e
ld
.
It
isa
pure
analogue
signal processingc
ir
cuit
d
es
igned
for
li
stening
to
headphon
es
as
if
one was listeni
ng
to
speakers.This
addresses
the
'
mu
sic
inside
the
head' sensation,
which
makes
fo
r
unsettling
listening.
Tip:Sonically-hindering
DSP
is
NOTused
for
XBoss•
nor
JD•
Matrix
systems. They
use
the
highest-
quality
di
scretecomponents
and
operatepurely
in
theanalogue
domain. Hence
all
the
clarity
and
resolution
of
the
original
musicis retained.
9. Settings
This
button
c
ho
oses
between:
-Off
-
3D
•
- X
Ba
ss•
10
11
12
13
10.Balanced 4.4mm analogueinput
This
is
a balanced
analogue
input.
11.Single-ended
3.5mm
input
For
connecting
single-ended 3.5mm
input.
12.
RCA
analogue input
This is an
analog
ue
input.
13.Balanced 4.4mmanalogue
output
14
This is an
analogue
output
via
4.4mm
> X
LR
or
other
balanced
interconnects.
You
could
use
this
for
an
active
speaker.
Tip:AsZENCANIs
balanced,
this
is
the
recommended
output.
14
. DC SVpower
Pl
ease
connect
Z
EN
CAN
to
the
enclosed
power
s
upply
,
ZEN
CAN
mu
st
ON
LY
be
powered
by
5 volts.
Tip:For
best
performance
upgrade
the
enclosed
power
supply
toa
super-low
noise
power
adapter
suchas
if/
iPower
or
iPower
X.
Specifications
Input
voltage:
Max
Output:
Balanced:
S-E:
THD&N
:
Balanced:
S-E:
SNR:
Balanced:
S-
E:
Max.Input
:
Balanced:
RCA
:
3.5mm:
Gain:
FrequencyResponse:
Power
consumption:
Dimensions:
N
et
weight
:
War
rant
y p
erio
d:
DC 5V/2.5A
AC
100-240V,
50/60Hz
(Powers
upply
Inc
lud
ed)
>15.1V/385 mW(@600
Ohm)
>11.0V/1890
mW(
@64Ohm)
>6.2V/1200
mW
(@32 Ohm)
>7.6V/98
mW
(@600Oh
m)
>7.4V/870mW(@64 Ohm)
>7.2V/1600mW
(@32
Ohm)
<0.006%
(@
360mW/2.4V16Ohm)
<0.005%(@
100
mW/1.27V
16Ohm)
>120dBA
(@
15.2V)
>
11
SdBA
(@
7.6V)
7.4VRMS
3.SVRMS
l.92VRMS
0dB,6dB,
12d8
and
18d8
1
0Hz-
200kHz(-3d8)
No
Signal
-SW
Max
Sig
nal
-13W
158x117x35mm
6.2"X 4.6"X 1.4"
515g(1.141bs)
12
months
Sptti6cotlonsaresubjecttochangewithout
no
tin.
ifi
-aud
io
.com
Verl
.1
Southport, UK –July 2020
ZEN CAN
the Tech
!
iFi audio ZEN CAN
Executive Summary
A revolutionary analogue headphone amplifier. Your headphones will sound like
never before.
• Passionately designed balanced amp with latest 4.4mm Pentaconn
connectors for input and output
• Circuit design derived from our $1,799 flagship Pro iCAN
• Proven 3D and XBass analogue signal processing circuits
Introducing a new headphone/pre-amp that will punch well above its price class.
The ZEN CAN is not to be confused with our ZEN CAN Signature 6XX amp which was launched
recently in the US market via the DROP platform. The Signature version was specially designed to
drive the Sennheiser 6XX headphone range so is a specialist match made in heaven. Our ZEN CAN
headphone amp is designed to drive ALL manner of headphones.
the Tech
ZEN CAN
Designing an OK headphone amplifier is easy.
Boutique Op-Amp + Output Stage + Vol control + power supply = voila!
But this is approach is not ideal.
- Fixed gain creates more noise
- Single signal input with lack of load matching means limited source flexibility
- Lack of EQ & sound-field corrections hampers listening enjoyment
Designing a one-of-a-kind balanced headphone
amplifier like the ZEN CAN is not.
Inputs
o A dedicated input circuit stage pairs sources & adjusts levels to match
eg Pentaconn 4.4. at 24k Ohm/high impedance and a 1M Ohm for SE input avoids
loading the source, the amplifier remains in Class A operation for lowest distortion
Class A Balanced/SE amplifier
o Draws heavily from the iFi’s flagship Pro iCAN, using the same discrete Class A
output buffer combined with a J-FET Op-Amp (OV2637A)
o Super-low loading means exceptionally low distortion
o FET input avoids loading volume control – low distortion/noise
o Low impedance feedback circuit enhances circuit performance and totally avoids
resistor noise
o Output amplifier gain of four steps in +6dB perfect for headphone matching
o Output stage drives headphones effortlessly and least noise/distortion
o Full protection of headphones/amplifier from overload/shorts
Southport, UK –July 2020
ZEN CAN
the Tech
Equalisation and sound-field know-how
o XBass for adding back the lost bass for headphones, most especially open-backed
headphones
o 3D for ‘in-room speaker listening’ as opposed to ‘in-head listening’
Power Supply
o ‘Pro’ series Stealth mode voltage conversion circuit
o Large inductor/capacitor filtering and ‘isolation’ power supply means separate
audio to power circuit
o 4,000uF power supply capacitance acts as huge ‘power reservoir’ for short
transient signals (ie: music signals)
MCU Control
o FET-based switching to avoid distortion/noise which is measured below limit of
Audio Precision2
o FET-based switches are 100% sonically transparent and handle ‘beyond rails’ peak
signals
o MCU and LED do not pollute music signal as they are in ‘wake mode’ only when
actioned. If not in use they default to ‘sleep mode’ even during listening to music
All these factors and ground-up custom designs mean that the ZEN CAN looks
different and is different by offering outstanding performance in a compact platform
Maxed out with audiophile components.
Beneath the ZEN CAN is a discrete Class A amplifier
circuit taken from the flagship $1,799 Pro iCAN, with a
full symmetric dual-mono headphone amplifier and
integrated gold-plated 4.4mm balanced connections.
the Tech
ZEN CAN
Each Panasonic ECPU capacitor features some 3,500 layers of
ultra-thin dielectrics less than 0.5μm thickness. This gives
class-leading Equivalent Series Resistance (ESR), low impedance (other than at the
desired capacitance) as well as frequency stability and vanishingly low distortion. A
total of 6 pieces are used.
TDK C0G (Class 1 ceramic) capacitors offer high stability
and low losses for resonant circuit applications. They are
pricey but are a perfect addition to our products. Getting
ever closer to the theoretical ideal of pure, frequency-constant capacitance, these
capacitors reduce capacitor-induced distortion to vanishingly low levels.
iFi/AMR ‘OV’ series stands for ‘Operationsverstärker’
(German for Operational Amplifier). The ‘OV’ range ICs use
HCOFC (High Content Oxygen Free Connectors) copper
lead-frames and 4N gold bond-wire which are streets ahead
of mainstream commercial chips that use inexpensive aluminum bond-wire and
low-grade/low-cost copper in the lead-frames. Containing four independent FET op-
amps in a ‘folded cascode’ internal design as also found in the ‘HDAM’ circuitry of
certain high end speaker amplifiers,
(
HDAMs consists of discrete surface mount components with short mirror image L/R signal paths. Those
devices are doing exactly the same thing as the op-amps, but outperform the regular IC op-amps dramatically
in terms of the Slew Rate and reduced noise level, resulting in a much more dynamic, accurate and detailed
sound.)
The OV2637A J-FET op-amp used in the ZEN CAN boasts an extremely low noise, low
distortion (0.0001%) and wide bandwidth.
TI low-noise ICs offer great unity gain bandwidth, very low noise
and distortion, high output drive capability, Common-mode and
Power Supply Rejection Ratios of over 100 dB, wide maximum-
output-swing bandwidths and high slew rates.
Southport, UK –July 2020
ZEN CAN
the Tech
To reduce noise even further we decided
to upgrade our design by introducing
Bipolar CMOS (BiCMOS), a
semiconductor technology that
integrates the two formerly separate semiconductor technologies to make the best
of both. As a result, ZEN CAN achieves very low noise, excellent transient response,
and excellent PSRR performance (rejection of power supply noise).
Tokyo Cosmos Electric Co. (TOCOS) multi-track
potentiometer used, with close channel matching
tolerance for optimal performance even at quiet listening levels (low positions of
pot).
SMT (Surface Mount Technology) galore: adopting SMT technology as much as
possible eliminates loadouts and terminations as possible sources of noise and
distortion. It also minimizes parasitic elements created by manual soldering, for
dramatic improvements over most mounted components.
the Tech
ZEN CAN
Technical Specifications
• Power Output Balanced: 756mW (15.1V) @ 300 Ohm, <1% THD (per channel)
385mW (15.2V) @ 600 Ohm, <1% THD (per channel)
• Power Output SE: 1,000mW (4.0V) @ 16 Ohm, <1% THD (per channel)
1,600mW (7.20V) @32 Ohm, <1% THD (per channel)
196mW (7.6V) @ 300 Ohm, <1% THD (per channel)
98mW (7.6V) @ 600 Ohm, <1% THD (per channel)
• Frequency response: 20Hz-20kHz (+0dB / -0.03dB)
< 10Hz – 200kHz (-3dB)
• SNR: - 120dB (BAL) (@ maximum output, A weighted)
• Dynamic range: 120dB (BAL) (@ maximum output, A weighted)
• THD & Noise: < 0.0069% (BAL) (4V out, 16 Ohm, 1kHz, A weighted)
• Output Imp. (HP): 24K Ohm BAL, 1M Ohm SE
• Output Imp. (Line): 200 ΩBAL
• Gain: 2X/6dB; 4X/12dB; 8X/18dB; 16X/24dB (BAL out)
Southport, UK –July 2020
ZEN CAN
the Tech
1X/0dB; 2X/6dB; 4X/12dB; 8X/18dB (SE out)
• Crosstalk : -90db
• Inputs: 4.4mm Pentaconn BAL (4.0V)
RCA L/R Socket SE (2.0V)
3.5mm jack SE (1.0V)
For further information, please contact us here:
About iFi
iFi audio is part of AGL and is headquartered in Southport, UK. It owns the hi-fi brand Abbingdon
Music Research (AMR). They respectively design and manufacture portable and desktop ‘ultra-fidelity’
audio products and high-end audio ‘home-based’ components. The combined in-house hardware
and software development team enables iFi audio and AMR to bring to market advanced audio
products.
Type A
Connect
(
where
appl
i
cable
)
This iFi
device
with
a
USB
type
A
male
port
f '
Type
A
was
designed
for
direct
connection
to
mobile
devices
to
extract
the
digital
signal.
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