ifi Stereo 50 User manual

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-

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

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

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

DXD

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

SPDIF

Y e l l o w

Green

Cyan

No music playing

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

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

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

Outputs

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

ifi Stereo 50 User manual

ifi Stereo 50 User manual

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