The ifi Stereo 50 is a high-fidelity all-in-one vacuum tube amplifier that delivers pure, lush, and open sound, along with a wide range of features for a versatile listening experience.
The ifi Stereo 50 is a high-fidelity all-in-one vacuum tube amplifier that delivers pure, lush, and open sound, along with a wide range of features for a versatile listening experience.
RETRO
50
All-in-One Vacuum Tube Amplifier
S T E R E O 5 0
All-in-One Vacuum tube Amplifier
Features
•
•
•
•
•
•
•
•
•
•
•
•
High-quality wireless Bluetooth(aptX) with NFC for pairing. No tedious setup is required, the most
convenient wireless connection with excellent sound.
Pure vacuum tube 25W + 25W* amplifier. For lush, open and fluid sound reproduction.
Pure vacuum tube headphone Turbo® 7,000 mW output power; able to drive even the most difficult
of headphones.
Independent scientific research shows pure tube amplifiers reduce listener stress and improve the
sense of well-being when listening to music**.
Native Octa-DSD512(24MHz), PCM768kHz, 2xDXD, the most advanced digital audio formats
available are supported together with all other DSD, PCM and DXD formats available.
Minimum phase, minimum ringing digital filter is employed for PCM up to 192KHz. Pure analogue,
no-ringing filtering is used for DXD/2xDXD as well as DSD. This removes a key factor in listener
f a t i g u e a n d t h e p e r c e p t i o n o f d i g i t a l s o u n d a s " a g g r e s s i v e " c a u s e d b y t h e h i g h - f r e q u e n c y r i n g i n g
and distortion inherent to all standard digital filters and most digital playback systems.
High-resolution audio USB, Coaxial, Optical digital inputs. Instantly upgrade the sound quality
from any available digital music sources.
3D Holographic Sound Systems® for Headphones and Speakers. Delivers a wide open and spatially
correct sound stage for speakers and headphones, reduces listening stress from "in head
localisation" with headphones.
XBass® for the best bass and dynamically corrects the Bass response to match the human hearing.
Ultra-wide gain range MM/MC phono pre-amplifier, able to match all phono cartridges.
Precision studio-grade tone controls, accurate, repeatable adjustment with unparalleled
t r a n s p a r e n c y .
Analogue volume control with remote control, retain all the low-level music information in
high-resolution audio.
*
**
Measured using a music signal into the matching speaker at the onset of clipping
Ackerman, J; doctoral thesis; 2000; Frankfurt Hochschule für Musik und Darstellende Kunst
1
1.
2.
3. Analogue
4.
5.
6.
7.
8.
9.
P o w e r L E D
P o w e r S w i t c h
Input-
Headphone Output-
Headphone Output-
Tone Control - Bass
Tone Control - Treble
O N / O F F .
45 seconds warm-up time.
Shared with INPUT 2 at rear.
For high sensitivity Headphones and
In-Ear-Monitors (IEMs).
For normal sensitivity Headphones.
See Phono Settings card
for additional Phono EQ details.
See Phono Settings card
for additional Phono EQ details.
DXD,DSD,PCM. See LED Status
card for details.
ON to bypass the Tone Controls.
3.5mm
3.5mm(Normal)
6.3mm(Turbo)
Format Indicators
Direct Input
For narrow (<1.5m apart) speaker
placement.
For Normal Use (Recommended).
OFF
Maximum Bass correction
(Recommended when the RETRO
LS3.5 is used with speaker stands).
Moderate Bass correction
(Recommended for RETRO LS3.5 under
normal setup).
OFF
For USB, Coaxial/Optical, Bluetooth inputs.
See LED Status card for details.
Digital Input
Input1
Input2
Input3/Phono
Also controlled by the remote control.
3D Holographic Sound System
XBass System
Digital Audio Input Selector
Status Indicator
Input Selector
Remote Control Receiver
Volume Control
-
-
10.
11.
12.
13.
14.
15.
16.
●●●
●
●●●
●
Off
On USB
Coaxial/Opt ical
Bluetooth
50
RETRO
Direct Bass In put
Digital
Bass Treble
TONE
3/Phono
INPUT VOLUME
1
2
2
INPUTPOWER
Input
On
1
11
21
31
41
5
1
61
7
1
8
1
91
11 1
13 1
14
1
10 1
12 1
15
1
16
2
For pairing new Bluetooth devices.
Connect the Ground wire from
the turntable.
See Phono Settings card for details.
For connecting an MC cartridge.
For connecting a High-Output MC cartridge,
MM cartridge or Line-Level equipment.
Shared with front 3.5mm input.
Shared with the 3.5mm input.
Input 2
Input 1
Bluetooth Pairing Switch
Phono Ground
L i n e 3 M o d e S e l e c t i o n
MC Low Input
MC High/MM/Line 3
17.
.
.
.
.
18
19
20
21
22.
23.
Coaxial/Optical (auto-switching).
n a t i v e s u p p o r t f o r t h e R e t r o S t e r e o 5 0 D A C .
b e f o r e
connecting the Retro Stereo 50 DAC to the
computer
2A slow-blow fuse.
100-240V AC.
Compatible with 4-16 Ohm Speakers.
Please set to an upright position for the
best reception.
Digital Audio Input
USB Input
Fuse
Mains Power Input
Speaker Outputs
Bluetooth Antenna
24.
25.
26.
27.
28.
29.
MAC OSX (10.6 or later) has built-in
MS Windows (XP or later), please download
and install the driver software
(www.ifi-audio.com).
Technology licensed from
AMR-Audio, UK As sembled in China
SPEAKERS
4 - 1 6 O h m
RIGHT LEFT
S&E
ifi-audio.com
Retro
Bass
®®
AC IN 100-240V
F U S E 2 A
SLOW BLOW
PHONO
GROUND
AUDIO INPUTS
D I G I T A L I N P U T S
USB
COAXIAL
OPTICAL
21
Li ne 3
(+6dB)
MM
MC
Hi gh
Dir ect S tr eam Digi tal
8X
4X
2X
1X
Digital eXtreme Definition
2X
1X
RETRO
50
Pairing
MC
Low
MC High
MM / Line 3
MC
Low
P H O N O
768
384
352
705
Pulse Code Modulation
L
R
17
18
19
20
22 24 25
21 23 26 27
2829
3
In-Ear-Monitors Over-the-Ear
Headphones
Off
On USB
Coaxial/Optical
Blue tooth
50
RETRO
Dir ec t Bass In put
Digi tal
Bass Tr e b le
TONE
3/P hono
INPUT VOLUME
1
2
2
INPUTPOWE R
In put
On
Smart Devices
Wireless Bluetooth
System Connection Diagram
Technology licensed from
AMR-A udio, UK Assem bled in Chi na
SPEAKE RS
4 - 1 6 O h m
RIGHT LEFT
S&E
ifi-audio. com
Ret r o
Bass®®
AC IN 100-240V
F U S E 2 A
S L O W B L O W
PHON O
GROUND
AUDIO INPUTS
DIGITAL INPUTS
USB
COAX IA L
OPTICAL
21
Line 3
(+6dB)
MM
MC
High
Direct Stream Digital
8X
4X
2X
1X
Dig it al eX tr e m e D ef ini t i o n
2X
1X
RET RO
50
Pa irin g
MC
Low
MC Hig h
MM / L in e 3
MC
Low
P H O N O
768
384
352
705
Puls e Co d e Mo dul a ti on
L
R
Loudspeakers
Digital Coaxial/Optical cable
U S B c a b l e
A u d i o R C A c a b l e
T u r n t a b l e Tuner,
Cassette Deck etc.
Computer
Blu-ray/DVD/CD Player,
Set-top-box,
Network Streamer
4
Input
Digital Audio
USB
Y e l l o w
Green
Cyan
White
Magenta
Green
Y e l l o w
Magenta
White
No music playing
PCM
PCM
PCM
DXD
DXD
DSD
DSD
DSD
DSD
-
88/96kHz
44/48kHz
176/192kHz
705/768kHz
352/384kHz
DSD64( )2.8/3.1MHz
DSD128(5.6 )/6.2MHz
DSD256(11.2 )/12.4MHz
DSD512(22.6 )/24.6MHz
None
Status
Indicator
F o r m a t
Indicator
Description
DIGITAL INPUTS
USB
COAXIAL
OPTICAL
Computer
Connection method: USB cable
S t e p 1 :
Connect the USB cable from the computer to the iFi RETRO Stereo 50's USB input.
S t e p 2 :
USB
Coaxial/Optical
Bluetooth
Input
Digital
3/Phono
INPUT
1
2
Select “ ” and “ ” from the “ ” selector.Digital Input USB INPUT
Format Indicator Status Indicator
Off
On USB
Coaxial/Optical
Bluetooth
Direct Bass Input
Digital
Input
LED Status
The LED indicates the sampling rate of the incoming digital signal
Tip:
•
•
•
•
The iFi Retro Stereo 50's DAC's design is based on the award winning iFi micro iDSD. It uses Minimum Phase
(44.1kHz-192kHz) and Bit-Perfect (352kHz or above) filter for the best sound.
For connection to Apple devices, the Apple USB Camera Adapter is required. For connection to Android
devices, an OTG cable and appropriate OS support are required. For more information, please refer to
www.ifi-audio.com.
MAC OSX (10.6 or later) has built-in native support for the iFi Retro.
MS Windows (XP or later), please download and install the driver software BEFORE connecting the iFi Retro
to the computer (www.ifi-audio.com).
For the best sound quality, always set the volume control on the computer and the playback software to 100%.
5
Blu-Ray/DVD/CD Player, Set-Top Box,
N et w o r k S t re a me r
Connection method: Digital Audio (SPDIF) connection with either coaxial cable or optical cable
Format Indicator Status Indicator
Off
On USB
Coaxial/Optical
Bluetooth
Direct Bass Input
Digital
Input
Input
SPDIF
Y e l l o w
Green
Cyan
No music playing
PCM
PCM
PCM
-
88/96kHz
44/48kHz
176/192kHz
None
Status
Indicator
F o r m a t
Indicator
Description
LED Status
The LED indicates the sampling rate of the incoming digital signal
Tip:
•
•
•
The intelligent Coax/Optical Digital Input will switch between the appropriate coaxial or optical
d i g i t a l s i g n a l s .
A Toslink Mini-Plug to Toslink adaptor is included for connecting a normal Toslink optical cable.
If the music source has both coaxial and optical outputs available, the coaxial connection will
usually provide a better quality sound.
Step 2:
S e l e c t “ ” a n d “ ” f r o m t h e “ ” s e l e c t o r .Digital Input Coaxial/Optical INPUT
USB
Coaxial/Optical
Bluetooth
Input
Digital
3/Phono
INPUT
1
2
Step 1:
If the source component has a coaxial digital output, connect the coaxial cable from the
source component to the iFi RETRO Stereo 50's intelligent digital audio input.
If the source component has an optical digital output, use the enclosed adapter to connect the
coaxial cable from the source component to the iFi RETRO Stereo 50's intelligent digital audio input.
DIGITAL INPUTS
USB
COAXIAL
OPTICAL
6
Mobile Smart devices (iOS/Android)
Connection method: Bluetooth wireless
Previously paired devices
Step 2:
USB
Coaxial/Optical
Bluetooth
Input
Digital
3/Phono
INPUT
1
2
Turn on the Bluetooth on the smart device and look for:
Format Indicator Status Indicator
Off
On USB
Coaxial/Optical
Bluetooth
Direct Bass Input
Digital
Input
Bluetooth
Blue
Flashing Blue
Blue/Red
PCM
PCM
PCM
Connected
N o t C o n n e c t e d
Pairing
Status
Indicator
F o r m a t
Indicator
Description
Input
The LED indicates the Bluetooth Status
Tip:
aptX® is the latest development in wireless audio and it enables CD-like quality over a Bluetooth
connection. Most upmarket Android smartphones from reputable manufacturers (e.g. Sony,
Samsung, LG etc.) already have aptX supported built-in. Also aptX is available on many notebook
computers (e.g. Apple Macbook Air, MacBook Pro, Samsung notebook etc.)
The Power on sequence of the Bluetooth system is:
•
•
S t e p 1 :
S e l e c t “ ” a n d “ ” f r o m t h e “ ” s e l e c t o r .Digital Input Bluetooth INPUT
“ ” a n d s e l e c t p r e s s “ ” w i t h i n 2 0 s e ciFi HQ(aptX) Audio Connect .
Unpaired devices
Step 1:
Select “ ” and “ ” from the “ ” selector.Digital Input Bluetooth INPUT
Step 2:
Press and hold the pairing button for one second.
Step 3:
T u r n o n t h e B l u e t o o t h o n t h e s m a r t d e v i c e a n d l o o k f o r :
“ ” a n d s e l e c t p r e s s “ ”iFi HQ(aptX) Audio Connect.
ON Auto Connect (20sec) Auto Pairing (5min) Sleep
7
•
•
•
•
•
•
Whenever Bluetooth is selected, the RETRO Stereo 50 will spend 20 seconds “searching” for
the last connected device. If it cannot find a previously connected device, it will go into
Auto-pairing mode for 5 minutes before falling back to Sleep mode.
Under Sleep Mode, a previously device can be connected to the iFi RETRO Stereo 50 by
selecting “Connect” on the smart device.
Under Sleep Mode, for a previously device, one needs to put the iFi RETRO Stereo 50 into
pairing mode by pressing the “Pairing” button.
iFi RETRO Stereo 50 can store up to 8 paired devices.
Smart devices (phone/pad) can also be connected to the iFi RETRO Stereo 50 using the USB input.
F o r i O S d e v i c e s , a L i g h t n i n g t o U S B C a m e r a A d a p t e r i s r e q u i r e d . F o r A n d r o i d d e v i c e s , a n O T G c a b l e
is required. The remaining process is the same as for a computer connected via USB.
Smart devices will require special audio playback softwave to offer DSD and High-Resolution audio.
# Currently, Hibiki and Onkyo HF player are available in the iTunes store for OS devices
paired
unpaired
#
i (iPhone/iPad).
For Android, USB Audio Player Pro will work with compatible devices.
8
Analogue audio source components
Connection method: RCA interconnect cables
Step 2:
S e l e c t t h e r e s p e c t i v e “ ” o r “ ” f r o m t h e “ ” s e l e c t o r .1 2 INPUT
Tip:
Input 3 is normally setup for connecting to a turntable. However, one can use the mode switch
a t t h e b a c k o f t h e u n i t t o c o n f i g u r e t h i s i n p u t t o b e c o m e a l i n e i n p u t w i t h 6 d B o f g a i n .
•
Step 1:
Connect the audio RCA cables from the source component to the iFi RETRO Stereo 50's RCA audio
input.
• T h e e x t r a 6 d B g a i n ( f i x e d ) i s u s e f u l w h e n y o u a r e c o n n e c t i n g s o m e v i n t a g e e q u i p m e n t ( e . g . r a d i o ,
cassette deck) where the output is the classic standard of 0.7Vrms rather than the modern
standard of 2Vrms.
3/Phono
INPUT
1
2
3/Phono
INPUT
1
2
AUDIO INPUTS
COAXIAL
OPTICAL
21
MC
Low
M C H i g h
M M / L in e 3
PHONO
L
R
L
9
Turntable
Connection method: RCA interconnect cables
S t e p 2 :
S t e p 1 :
Identify the input and set the mode switch on the iFi RETRO Stereo 50 for the cartridge used.
Connect the audio RCA cables from the turntable to the iFi RETRO Stereo 50's Phono audio input connection
as illustrated in Step 1 above.
Connect the Ground wire from the turntable to the iFi RETRO Stereo 50's “ ”P H O N O G R O U N D .
S t e p 3 :
Select the “ ” from the “ ” selector.3/Phono INPUT
PHONO
GROUND
L in e 3
(+6dB)
MM
MC
High
Pairing
MC
Low
M C H i g h
M M / L i n e 3
MC
Lo w
PHONO
PHONO
GROUND
Line 3
(+6dB)
MM
MC
High
Pairing
MC
Low
M C H i g h
MM / Li ne 3
MC
Lo w
PHONO
L i n e 3
( + 6 d B )
MM
MC
High
MC
Low
M C H ig h
M M / L i n e 3
M C
L o w
PHONO
M o d e S w i t c h R C A c o n n e c t i o n
Gain(dB) RCA connection
Cartridge Diagram
<0.75mV M C
Low 62 MC
Low
0.75-3mV M C
High 50 M C H i g h
M M / L i n e 3
>3mV
Line
MM 38 M C H i g h
M M / L i n e 3
Line3
(+6dB) 6M C H i g h
M M / L i n e 3
M o d e S w i t c h
rated output
3/Phono
INPUT
1
2
10
•
•
The default Phono EQ curve is the RIAA.
If the precision Tone Control (10-click each side)is enabled, it can convert the default RIAA EQ to
various other EQ curves as follows:
EQ Bass Treble
RIAA Centre Centre
CCIR/Teldec - 1 c l i c k s +5 clicks
Columbia -4 clicks -4 clicks
Decca -3 clicks -4 clicks
DMM +1 clicks -2 clicks
EMI -3 clicks +3 clicks
Bass
RIAA
CCIR/Teldec
Columbia
Decca/EMI
DMM
T r e b l e
RIAA
CCIR/Teldec
Columbia/Decca
DMM
EMI
• When the mode switch is selected as Line (+6dB) input, no RIAA EQ is applied.
N o t e : “ - c l i c k ” e q u a l s t u r n t h e d i a l t o t h e l e f t
“ + c l i c k ” e q u a l s t u r n t h e d i a l t o t h e r i g h t
Stereophonic Microgroove LP Records
RIAA
EMI
D i s p l a y N a m e
RIAA (DMM)*
Comments
Modern stereo LP playback curve
Angel Records, Manhattan Records, Narada, labels under
Caroline Distribution, Mute, IRS, Liberty and Stateside
(there may be others too)
Corrects for the hard, metallic sound from DMM
Columbia
Columbia LP stereo
DECCA (FFSS) Decca & London, Deutsche Grammophon,
Archiv, Polygram, NAB, Philips, and Argo
CCIR 56 Europe pre appx. 1962, Eastern Europe & Asia pre appx. 1975
eg. Amiga, Eterna,Deutsche Grammophon and Melodiya
* T h e R I A A ‘ D i r e c t M e t a l M a s t e r i n g ’ C u r v e i s n o t a s t a n d a r d E Q C u r v e . T h i s u n q i u e A M R ‘ C u r v e ’ w a s d e v e l o p e d s p e c i f i c a l l y t o c o r r e c t f o r
the commonly found bright’ and ‘metallic’ edge of DMM recordings.
11
Tone Controls
The iFi RETRO Stereo 50 incorporates a +/- 8dB precision studio-grade tone control. The tone control system
can be bypassed by the Direct switch:
T i p :
This tone control system has been engineered with utter transparency; one should not hear a significant
difference with the Direct switch On or Off if the tone control themselves are at their neutral position.
This tone control system can be used to recreate a number of additional EQ curves for vinyl record playback,
please refer to the: Turntable section for more details.
On = Direct On, tone control system bypassed.
Off = Direct Off, tone control system is enabled.
•
•
Off
On
Direct
Bass T r e b l e
TONE
Input
Bass
T i p :
Sonically-damaging DSP is NOT used for either XBass nor 3D HolographicSound® systems. It uses the
highest-quality discrete components and so the integrity of the original recording is retained. Hence all the
clarity and resolution of the original music is retained.
•
3D HolographicSound System®
Bass System®
X
Maximum Bass correction (Recommended when the LS3.5 is used with speaker stands).
Moderate Bass correction (Recommended for LS3.5 under normal setup).
OFF
-
●●●
●
For narrow (<1.5m apart) speaker placement.
For Normal Use (Recommended).
OFF
-
●●●
●
•
•
For use with the iFi Retro LS3.5, it is recommended to set the XBass to the following configurations:
1. If the iFi Retro LS3.5 loudspeakers are placed on speaker stands in free space, use the setting.
2. If the iFi Retro LS3.5 loudspeakers are placed on a console or in an open shelf, use the setting.
The iFi Retro LS3.5 speakers are designed with the XBass function of the Retro Stereo 50 as part of the
overall frequency response, hence it is recommended to at least use the setting for the maximum sound
quality.
“ ”
“ ”
“ ”
●●●
●
●
12
T i p :
The 3D HolographicSound® system for Speakers and Headphones corrects a fundamental flaw in the
stereophonic recording process, which distorts the presentation of space and instruments with the
recording space. Both speakers and headphones are affected, however in different and one may say
opposite ways.
The RETRO Stereo 50 implements the required corrections for both Headphones and Speakers in the form of
iFi 's 3D HolographicSound® matrix analogue signal processing, specially and separately optimised for
speakers and headphones. This feature is of benefit to all speakers by improving the focus and clarity of the
sound stage and to headphones by reducing or eliminating "in head" localisation.
The changeover is automatic, with speakers playing, 3D HolographicSound® for speakers is selected; with
headphones playing (headphones plugged in), 3D HolographicSound® for headphones is selected.
The 3D HolographicSound® system can also be used to expand the sound field to improve the sense of width,
height and depth for greater listening pleasure or to compensate for sub-optimal speaker placement.
3D HolographicSound® system for Speakers
Direct - use for recordings made with similar corrections as 3D HolographicSound® (rare)
3D Correction only - for typical speaker situations (e.g. HiFi speakers in a normal listening room)
3D Correction and 3D expansion - for narrow speaker situations (e.g. desktop speakers beside the
computer monitor)
3D HolographicSound® system for Headphones
Direct - use for recordings made with similar corrections as 3D HolographicSound® (rare) or Headphones
with built-in correction
3D Correction only - for normal Headphone listening with most recordings
3D Correction and 3D expansion - for recordings or headphones with too narrow rendering of space
Please note that the above settings are guidelines, feel free to try and find the optimal settings that suit your
environment, recordings and Speakers/Headphones.
For use with the RETRO LS3.5, it is recommended to set the 3D HolographicSound® System to the following
configurations:
1. If the distance between the speakers is less than 1.5m, use the “ ” setting.
2. If the distance between the speakers is more than 1.5m, use the “ ” setting.
At the dawn of stereo recording in the 1930s, a fundamental problem was documented by the 'father' of
stereo sound recording – Alan Dower Blumlein. Due to the shape and size of the human head, stereo
separation is greater at high frequencies than it is at low frequencies due to the crosstalk between the two
ears at low frequencies.
A similar problem was found in the late 1950's by Ben Bauer for headphone playback of stereophonic
recordings, however here the problem was the excessive separation of low frequencies by the two separate
"on/in ear” transducers producing a sound field stuck in the listener’s head. With hindsight it is clear this is
the exact flip-side of the problem documented by Blumlein.
Despite this problem being 'known' for 80 Years (or over 50 Years for headphone listening), very few
recordings and no playback system compensate for this issue and little research has been conducted on how
to correct this.
The 3D HolographicSound® System corrects the above issue by applying the correction separately for
Speakers and Headphones (which need different and opposing corrections) and hence it is recommended
to at least use the “ ” setting for the most accurate sound stage reproduction.
•
•
•
•
•
•
•
•
#
#
-
-
●
●●●
●
●●●
●●●
●
●
13
Connection method: Loudspeaker cables
S t e p 1 :
SPEAKERS
4 - 1 6 O h m
RIGHT LEFT
Connect the left LS3.5 loudspeaker to the LEFT SPEAKER output on the iFi RETRO Stereo 50 and vice
ve rs a.
Tip:
Normally is it preferably to decouple the loudspeakers from the shelf/desk they are placed on.
It is recommended to place the speakers at ear-height, with around the same distance between
them as the distance to the user.
iFi has included the following for proper decoupling:
1. anti-slip mat
2. silicon rubber feet
Please select your preferred decoupling item. The silicon rubber feet are usually used when
the LS3.5 is positioned on its side, so the silicon will raise the LS3.5 to the same height as the Stereo
5 0 A m p l i f i e r f o r a m o r e c o h e r e n t l o o k a n d f e e l .
Depending on the positioning of the 2 loudspeakers, please experiment with XBass and 3D
HolographicSound for the best sound. Please refer to the “XBass” and “3DHolographicSound”
s e c t i o n s f o r m o r e d e t a i l s .
The loudspeaker grille is acoustically transparent, attached by magnetic force and is replaceable.
The included loudspeaker cables are made of very high quality silver-plated OFHC copper with
T e f l o n i n s u l a t i o n f o r t h e b e s t s o u n d .
•
•
•
•
•
•
•
Loudspeaker Outputs
14
The iFi RETRO Stereo 50 has two headphone outputs (Normal and Turbo) to suit different
headphones:
3.5mm socket (normal drive): connect normal sensitivity headphones and In Ear Monitors (IEMs)
h e r e .
6.3mm socket (Turbo drive): connect low sensitivity headphones here.
Tip:
When a headphone is plugged in, the iFi RETRO Stereo 50 will automatically mute the speaker
output.
As the 3D HolographicSound system is different for Speaker or Headphone playback, when a
headphone is plugged in, the iFi RETRO Stereo 50 will automatically select 3D HolographicSound
for headphones.
•
•
•
• ®
®
Headphone Outputs
15
Specifications
Retro Stereo-50
Stereo Tube Amplifier, with DAC and Phono Stage
Wireless Input
Bluetooth (aptX): 1
USB (DSD512/768kHz/2xDXD): 1
Coaxial (192kHz): 1
Optical (192kHz): 1
P h o n o ( M M / M C L o w / M C H i g h / L i n e 3 ) : 1
L i n e 1 : 1
L i n e 2 : 1
1
1
Outputs
1
1
> 2 5 W * ( m a j o r i t y C l a s s A )
< 0.2% (@ 2.83V/1W)
10Hz ~ 60KHz
Digital Input
Analogue Input
3.5mm (share with Line 2):
Loudspeaker Output:
3.5mm Headphone Output:
6.3mm Headphone Output:
Audio Section
Power output (Music):
Total Harmonic Distortion(THD):
Output bandwidth:
Frequency Response:
Signal-to-Noise Ratio:
D A C D y n a m i c R a n g e :
Tone Control:
Analogue Signal Processing (ASP):
Phono Gain:
RIAA Accuracy:
Tubes:
10Hz ~ 80KHz
> A m p l i f i e r 1 0 1 d B ( @ m a x o u t p u t )
> P h o n o M M : 9 0 d B ( A )
> Phono MC: 80dB(A)
> 1 1 3 d B ( A )
Bass(100Hz) +/-8dB
Treble(10KHz) +/-8dB
3D Holograohic, XBass
38, 50, 62dB
<0.5dB**
2 x ECF82; 4 x EL84X
16
PCM: 768/705.6/384/352.8/192/176.4/96/88.2/48/44.1kHz
Digital Section
DSD 512/256/128/64:
DXD:
24.6/22.6/12.4/11.2/6.2/5.6/3.1/2.8MHz
Filters:
768/705.6/384/352.8kHz
Minimum Phase (PCM 192/176.4/96/88.2/48/44.1kHz)
Bit Perfect (DXD/PCM 768/705.6/384/352.8)
A n a l o g u e ( D S D )
P C M 192/176.4/96/88.2/48/44kHz
General
P o w e r S u p p l y : AC 100V-240V
Power consumption: 100W
~0.1W (Standard mode)
D i m e n s i o n s ( W x H x D ) : 268 x 146 x 226mm
Weight: 5.8kg
17
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
The ifi Stereo 50 is a high-fidelity all-in-one vacuum tube amplifier that delivers pure, lush, and open sound, along with a wide range of features for a versatile listening experience.
Ask a question and I''ll find the answer in the document
Finding information in a document is now easier with AI
Related papers
-
ifi B0BHZW1B6Z User manual
-
ifi Micro iDSD Signature Transportable USB DAC and Headphone Amp User manual
-
ifi Zen Air Dac Series User manual
-
-
ifi Audio iDSD Diablo User manual
-
ifi UNO USB Audio DAC Ampler User guide
-
ifi ZEN DAC Signature V2 User guide
-
ifi ZENBLUEV2 User manual
-
ifi Zen Air Blue Digital Devices User manual
-
ifi Zen One Signature DAC User manual
Other documents
-
Mee Audio CONNECT AF-T1 User manual
-
MEE CONNECT AF-T1 User manual
-
Wyred 4 Sound DAC-2 DSD & DSDse Pure Music Installation guide
-
AIYIMA AUDIO A08 User manual
-
Vive 2QB9100 User guide
-
IMS X8 User manual
-
AIYIMA DAC-A1 User manual
-
iFi Audio Uno User manual
-
Blue Aura v30i Blackline User manual
-
Blue Aura v40 Blackline User manual
