Network Audio Control Player
SU-R1

Minimises noise and achieves maximum silence, building on the digital source
reproduction technology and knowhow accumulated over many years.

Technics Digital Link
(Original Digital Signal Transmission)

Some systems use a digital link between source component and pre-amplifier, keeping the digital signal pure as long as possible: Technics Digital Link goes further. It has eliminated the volume control function from the pre-amplifier, and instead transmits the volume control information, together with the audio signal, directly to the power amplifier in digital form. The power amp's jitter reduction circuit reduces any effect of jitter in signal transmission, then performs the volume control immediately before the PWM converter.
This new sound transmission interface, Technics Digital Link, supports audio signals and also eradicates inter-channel effects by transmitting the left and right channel signals separately. Technics Digital Link has achieved an ideal amplifier configuration, minimising any degradation between the pre-amplifier and the power amp, and resulting in superb stereo separation and reproduction of even the most subtle signals. The result is a more detailed and dynamic sound.

Concept of Technics Digital Link
Block Diagram of Technics Digital Link between SU-R1 and SE-R1

Digital Noise Isolation Architecture

The SU-R1 Network Audio Control Player receives audio signals from various digital content devices, such as NAS, PCs, USB memory devices and digital interfaces. Many of these digital content storage systems were originally designed for use with PCs, so low noise – which is required for pure audio reproduction – was never a main design concern. To handle these often noisy sources, the SU-R1 isolates the interfaces for these media to exclude external electrical interference, and also employs a jitter remover, thus offering clear and stable sound, free from noise and distortion.

Concept of Digital Noise Isolation Architecture
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Jitter Remover

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Common Mode Filter

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SPDIF Pulse Transformer

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Power Conditioner (USB-A)

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Power Conditioner (USB-B)

Separated Analog/Digital Power Supply

Dedicated low-noise R-core transformers* with excellent regulation characteristics are used for the analogue and digital circuits, and the power supply is further isolated to exclude any digital noise from the analogue circuits. *R-core transformer is a trademark of Kitamura Kiden Co., Ltd.

Photo of Power supply

Technics Music App
for Smartphones

The Technics Music App enables you to select a music source and playback equipment, and create playlists easily and comfortably on the screen of a tablet or smartphone. The Music App screen displays the music stored on a connected DLNA-compatible server, content stored on the device running the App, and music files on connected USB memory devices, giving you integrated playback control. Used with the SE-R1 or SU-C700, the Technics Music App not only allows you to control the volume and playback operations, but also lets you adjust the Bass, Mid and Treble levels.

Main Features

  • - Simple and Intuitive Menu
  • - DLNA Playback
  • - USB Memory Playback
  • - Multi Device Playlist Functions *1
  • - Bass / Mid / Treble Control on Technics Products *2

*1 Unable to include USB memory as multi device playlist.
*2 Will not function when using Bluetooth® as a music source.

Photo of Technics Music Apps
Download on the App StoreGET IT ON Google play

Ultra Low Distortion Oversampling Digital Filter

An oversampling digital filter, incorporating an original Technics algorithm, shifts digital noise to -160 dB or lower, thus moving any potential distortion far beyond hearing and leaving a rich, detailed sound.

Graph of Ultra Low Distortion Oversampling Digital Filter

Virtual Battery Operation

Virtual Battery Operation removes noise generated by the power supply circuit by using a capacitor to fulfil the function of a battery: during playback, this capacitor provides the power, taking the charging system out of circuit, and preventing supply noise from mixing into the audio signal.

Graphs of Virtual Battery Operation

High Quality Analog I/O Circuit

The SU-R1 features Digital Noise Isolation Architecture, a high-precision clock generator and independent high-precision Burr-Brown PCM1792 (Texas Instruments) digital to analogue converters for left and right channels. The circuits after the D/A converter are of a balanced configuration, using non-magnetic film resistors, low equivalent series resistance capacitors and a high-quality LME49720 (Texas Instruments) OP amp. Analogue inputs are converted to digital with the high-precision Burr-Brown PCM4220 (Texas Instruments) 192-kHz/24-bit A/D converter, allowing high-purity sound with digital and analogue sources alike.

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Burr-Brown PCM1792

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Burr-Brown PCM4420

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I / V Conversion, Analogue Output Nonmagnetic Carbon Film Resistor

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Photo 2

Power Supply Circuit Low-magnification Foil Electrolytic Capacitor,
Aluminium Foil Capacitor, Large-capacity Capacitor

High Res Re-master

Technics has developed signal processing to increase both sampling frequency and bit-depth: the High Res Re-master system converts audio signals to high-resolution at up to 192 kHz/32 bits, to bring the listener closer to the original music.

Graph of High Res Re-master
Graph of High Res Re-master

Optimally Activated Circuit System

The Optimally Activated Circuit System allows the shutdown of various digital modules – such as those used for display, network, USB and digital interfaces – to minimise the noise generated when music is playing.

Various Inputs

The pre-amp section supports a wide range of digital input — DLNA, USB memory devices, USB-DAC, SPDIF, AES/EBU — and two sets of analogue line signals. It converts analogue signals to 192-kHz/24-bit PCM signals using the high-precision A/D converter. The full-digital system achieves high-purity reproduction from any content. The USB-DAC supports 384-kHz/32-bit PCM, 2.8-MHz/5.6-MHz DSD native playback (analogue output) and asynchronous transmission. The digital input supports coaxial 192-kHz/24-bit PCM and optical 96-kHz/24-bit. For DLNA/USB memory device playback, DSD (2.8-MHz/5.6-MHz), WAV/AIFF/FLAC of up to 192 kHz 24 bits, and ALAC of up to 96 kHz 24 bits can be reproduced.

Input Terminal File Format Sample Rate Bit Depth Bit Rate
Network / USB-A MP3 Sample Rate32 / 44.1 / 48 kHz Bit Depth16 bit Bit Rate16-320 kbps
WMA Sample Rate32 / 44.1 / 48 kHz Bit Depth16 bit Bit Rate16-320 kbps
AAC Sample Rate32 / 44.1 / 48 / 88.2 / 96 kHz Bit Depth16 bit Bit Rate16-320 kbps
WAV Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz Bit Depth16 / 24 bit Bit Rate-
FLAC Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz Bit Depth16 / 24 bit Bit Rate-
AIFF Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz Bit Depth16 / 24 bit Bit Rate-
ALAC Sample Rate32 / 44.1 / 48 / 88.2 / 96 kHz Bit Depth16 / 24 bit Bit Rate-
DSD Sample Rate2.8224 / 5.6448 MHz Bit Depth1 bit Bit Rate-
Digital AES / EBU Input PCM Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz Bit Depth16 / 24 bit Bit Rate-
Digital Coaxial Input PCM Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz Bit Depth16 / 24 bit Bit Rate-
Digital Optical Input PCM Sample Rate32 / 44.1 / 48 / 88.2 / 96 kHz Bit Depth16 / 24 bit Bit Rate-
USB-B PCM Sample Rate32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz Bit Depth16 / 24 / 32 bit Bit Rate-
DSD Sample Rate2.8224 / 5.6448 MHz Bit Depth1 bit Bit Rate-

Reference Class SU-R1

Show the enlarged photo of the front of SU-R1
Show the enlarged photo of the rear of SU-R1
Noiseless Signal Technology
Digital Noise Isolation Architecture
Virtual Battery Operation
Ultra Low Distortion Oversampling Digital Filter
High Res Re-master
Optimally Activated Circuit System
Technics Digital Link
Separated Analog/Digital Power Supply
High Quality Analog I/O Circuit
High Rigidity Metal Double Chassis
Technics Definitive Design
Aluminium Plain Miter Joint
Multi Control Knob
Symmetric Structure
Frequency Response
2 Hz - 90 kHz (-3 dB)
Dynamic Range (IHF-A)
BALANCED 118 dB, UNBALANCED 115 dB
Signal to Noise Ratio (IHF-A)
BALANCED 118 dB, UNBALANCED 115 dB
THD+N
0.0008 % (1 kHz, 0 dB)
Analogue Input Terminal
LINE x 2
Digital Input Terminal
AES/EBU Digital x 1, Coaxial Digital x 3, Optical
Digital x 1, USB-A, USB-B
USB-A
iPod/iPhone/iPad
Yes
Support Codec
WAVYes (32, 44.1, 48, 88.2, 96, 176.4, 192 kHz / 16, 24 bit)
FLACYes (32, 44.1, 48, 88.2, 96, 176.4, 192 kHz / 16, 24 bit)
DSDYes (2.8224 MHz, 5.6448 MHz)
AIFFYes (32, 44.1, 48, 88.2, 96, 176.4, 192 kHz / 16, 24 bit)
ALACYes (32, 44.1, 48, 88.2, 96 kHz / 16, 24 bit)
AACYes (32, 44.1, 48, 88.2, 96 kHz / 16-320 kbps)
WMAYes (32, 44.1, 48kHz / 16-320kbps)
MP3Yes (32, 44.1, 48kHz / 16-320kbps)
USB-DAC (USB-B)
USB Audio Class Specification
USB Audio Class 2.0, Asynchronous Mode
Support Codec
DSCYes (2.8224 MHz, 5.6448 MHz)
PCMYes (32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz / 16, 24, 32 bit)
DLNA Support Codec
WAVYes (32, 44.1, 48, 88.2, 96, 176.4, 192 kHz / 16, 24 bit)
FLACYes (32, 44.1, 48, 88.2, 96, 176.4, 192 kHz / 16, 24 bit)
DSDYes (2.8224 MHz, 5.6448 MHz)
AIFFYes (32, 44.1, 48, 88.2, 96, 192kHz / 16, 24bit)
ALACYes (32, 44.1, 48, 88.2, 96 kHz / 16, 24 bit)
AACYes (32, 44.1, 48, 88.2, 96 kHz / 16-320 kbps)
WMAYes (32, 44.1, 48 kHz / 16-320 kbps)
MP3Yes (32, 44.1, 48 kHz / 16-320 kbps)
Analogue Output Terminal
UNBALANCED x 1, BALANCED x 1
Digital Output Terminal
Technics Digital Link x 1, AES/EBU Digital x 1,
Coaxial Digital x 1, Optical Digital x 1
Headphone Output
Yes
AirPlay
Yes
Ethernet Interface
LAN (100 Base-TX /10 Base-T)
Power Supply
AC220-240V, 50Hz/60Hz
Power Consumption
60 W
Dimensions (W x H x D)
480 x 120 x 391 mm
Weight
Approx. 17 kg
Accessories
Remote control, AC cords, Operating Instructions
  • dlna logo
  • Airplay logo
  • iTunes logo

AirPlay, iPad, iPhone, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries.
"Direct Stream Digital", DSD and their logos are trademarks of Sony Corporation.
Windows Media and the Windows logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.
MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson.

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Reviews

hi-finews EDITOR’S CHOICE

"The Technics system is impressive, and does so much right in purely technical terms, thriving on demonstration quality music of the simple orchestral ensemble/trio jazz school."

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