High Performance 32bit 384kHz Stereo USB DAC / 24bit 192kHz ADC Recording Interface
IMPORTANT SAFETY INSTRUCTIONS
WHEN USING YOUR STRATOS USB DAC PRECAUTIONS SHOULD
ALWAYS BE FOLLOWED,
INCLUDING THE FOLLOWING:
1.Read all instructions.
2. Operate STRATOS for its intended purpose only.
3. To reduce the risks of electric shock do not immerse the unit in water or other liquids.
4. Never pull power cord to disconnect unit from wall outlet. Instead grasp DC adaptor and pull to
disconnect.
5. Do not allow power cord to touch hot surfaces.
6. Do not operate unit with a damaged power cord or if the unit has been dropped or damaged. To
reduce the risk of electric shock do not disassemble or attempt to repair the STRATOS; take it to a
qualied service technician for examination and repair. Incorrect reassembly or repair could cause
a risk of re, electric shock, or injury when the STRATOS is used.
SAVE THESE INSTRUCTIONS
WARNING
CAUTION
Modifications
CAUTION: DO NOT SUBSTITUTE PARTS OR MAKE ANY MODIFICATIONS WITHOUT THE WRIT- TEN
APPROVAL OF FURUTECH CO., LTD. MODIFICATION MAY CREATE SAFETY HAZARDS AND VOID THE
WARRANTY.
NOTICE: CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY FURUTECH CO., LTD.
COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT UNDER FCC REGULATIONS.
Repairs
CAUTION: DO NOT SERVICE OR REPAIR THIS PRODUCT UNLESS PROPERLY QUALIFIED. ONLY A
QUALIFIED TECHNICIAN SHOULD PERFORM REPAIRS.
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Misuse of electrical equipment displaying this mark may cause serious injury
Misuse of electrical equipment displaying this mark may be deadly
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ADL – Alpha Design Labs – creates innovative, smart-looking components with
scintillating sound for computer-based systems as well as personal and portable electronics. Tokyo-based ADL by Furutech™ aims high using the best
materials and innovative design for an expanding line of Japanese designed
precision products that include the STRATOS.
a whole new way of thinking.…
The legendary and groundbreaking ADL GT40, known throughout the world as “the Swiss Army knife of audio
components” when it was introduced, revolutionized the home entertainment industry when it came to man-
aging computer-based music systems. The new and innovative ADL STRATOS, however, is set to raise the
bar even higher with more features and even better performance.
The ADL STRATOS is more than just a DAC, a preamplifier, a phono stage and a headphone amplifier in
one small, portable box. With the STRATOS you get DSD (2.8M, 5.6M and 11.2M), USB (supports PCM
24~32bit/384kHz Max.) and ADC (24bit/192 kHz Max.), so you’ll be able manage the largest music collec-
tions on your hard drive with ease and flexibility—and outstanding sound quality. If you need to convert your
LPs or other analog sources to digital, the STRATOS offers a wide variety of options to help you obtain the
best sonic results. With its low-latency USB 2.0 audio driver that plays at 384 kHz and records at 192 kHz
and its built-in high-performance MM/MC phono stage, you can easily record your favorite albums to hard
disk via USB. Best of all, you’ll enjoy Furutech’s signature sound—detailed, clear yet smooth—when you use
the ADL STRATOS as the heart and soul of nearly any desktop system.
If you’re looking for a powerful headphone amplifier that can drive any pair of headphones on the market, the
STRATOS delivers. Whether you use the latest generation of ear phones or the most revealing electrostatic
ear speakers available, the ADL STRATOS will allow you to venture and explore deeper into the recording
than ever before. That’s because every product from ADL is built with only the finest materials, as well as the
most innovative Japanese design principles. The STRATOS may be small and portable, but it contains an
amazing amount of technology. Additional features include L/R analog inputs, line or phono (switchable MM/
MC) inputs, S/PDIF Coaxial and Optical inputs, S/PDIF Optical output (for USB, Optical, and Coaxial) and a
controller that supports both ASIO and Asynchronous modes.
The STRATOS also uses the finest Furutech connectors to deliver high-quality sonic results. Indeed, the
STRATOS is far more than a classic GT40 with DSD capabilities—every square inch of the STRATOS has
been reconsidered and rethought using the latest technology and the latest designs. The original GT40
certainly shook up the audio world when it redefined the level of audio performance, flexibility and features
available at its affordable price. With the ADL STRATOS, however, a new revolution has begun. It certainly
qualifies as more than a new “Swiss Army knife of audio components.” It’s a whole new way of thinking.
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High Performance 32bit 384kHz Stereo USB DAC / 24bit 192kHz ADC Recording Interface
User manual contents
Please read carefully and follow all instructions.
Keep this manual for future reference.
Important Note:
The STRATOS has been designed as DAC and ADC Digital Preamplier (with Remote Control), Phono and Headphone Amplier and a 24~32 bit/384kHz stereo USB DAC primarily for
the playback of PC based digital audio and for the conversion and recording of analog signal
via USB to your PC.
Driver:
No drivers are necessary with Mac computers, while a single standard driver is required for
Windows computers.
- please download driver from http://www.adl-av.com/products/usbdac/stratos/
The STRATOS must be connected to the power during driver installation.
The OS will recognize the STRATOS automatically.
Included with the STRATOS:
• User manual
• Remote Control for use with STRATOS only
• AC/DC switching power adapter for use with STRATOS only
• USB cable x 1
IMPORTANT SAFETY INSTRUCTIONS ・・・・
User manual contents ・・・・・・・・・・・・・・・・・・・
Features ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
Functions and Part names ・・・・・・・・・・・・・・・・
Front Panel
Rear Panel
ADL STRATOS Driver and Connectivity・・・・・・
Basic settings ・・・・・・・・・・・・・・・・・・・・・・・・・・・
Windows 7, 8 and 10 ・・・・・・・・・・・・
MAC OS ・・・・・・・・・・・・・・・・・・・・・・
Specications ・・・・・・・・・・・・・・・・・・・・・・・・・・・
Warranty・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
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Features
• XMOS Integrated High Speed USB 2.0 PHY giving 480Mbps data-rates and USB Audio Class 2.
PCM 24~32 bit/384kHz (Max.) sampling rates supported. (* Note-32bit will not be shown on computer)
USB 2.0 high-speed compliance with DSD (2.8M, 5.6M and 11.2M data supported), with the ability to sample
44.1, 48, 88.2, 96, 176.4, 192,
352.8 and 384 kHz sampling rates, indicated by LEDs on the front panel
• ESS ES9018K2M SABRE32 Reference Stereo DAC: Audiophile-grade (DSD /2.8M, 5.6M, 11.2M supports)
32bit 384kHz DAC Chip .The SABRE-2M DAC is an audiophile-grade high-performance 384kHz, 2-channel
audio D/A converter designed for audio pre-ampliers and A/V receivers, as well as professional applications
such as recording systems, mixer consoles and digital audio workstations. With ESS patented 384kHz
Hyperstream™ DAC architecture and Time Domain Jitter Eliminator, the SABRE32 Reference Stereo DAC
delivers an unprecedented DNR of up to 135dB and THD+N of -120dB, the industry’s highest performance level
that will satisfy the most demanding audio enthusiasts.
• Analog-to-Digital Converter: The STRATOS sports a high-performance CS5340 ADC chip for high resolution
recordings via analog inputs including phono, AM/FM radio, or other analog signals to PC or MAC hard drive (24
bit/192kHz Max.)
• Ultimate high-end grade linear volume control: 2-channel electronic volume allowing the volume to be preset
for each input (Phono, Line, USB): The MUSES72320 is a ±18V operation 2-channel electronic volume, which
is optimized for high-end audio and professional audio applications with advanced circuitry and layout. The
MUSES72320 performs low noise and low distortion characteristics and with resistance ladder circuit.
• Three Powerful Headphone Ampliers: STRATOS has three powerful TI TPA6120A2 headphone ampliers:
a pair handle the left and right channels of the XLR (4-pin) balanced output (non-switched), and the third powers
the 6.3mm Stereo phone jack output (switched). (TI TPA6120A2 driving from 12 to 600 ohms at >120dB
dynamic range)
• ASIO (Windows); Plug’n Play (MAC)
• Line, ADC and DAC OPA: TI NE 5532 OP Amp, PHONO OPA: JRC NJM2068DD OP Amp
• S/PDIF Coaxial and Optical input: If the playback sample rate cannot not be set at source, the Coaxial and
Optical LED will indicate (Max. 24 bit/192kHz sampling rates supported)
• Convenient Clip signal Toggle switch for Recording Attenuation: Adjust the recording attenuation to avoid any
distortion during recording: -6dB, 0dB or +6dB (Rec/db signal light comes on when input level exceeds circuit
Gain).
• Phono Preamplier: The STRATOS features a phono equalizer for recording your precious LPs. Switch between
Moving Magnet (MM) and Moving Coil (MC) or Line input
• Dual External power supply:
Power supply-1: 5V DC from USB bus powered USB chip only.
Power supply-2: External AC/DC Switching Adaptor output DC 15V / 800mA / 12W provides power needed
for high resolution audio via LINE, PHONO, COAXIAL, OPTICAL inputs (The STRATOS also excels as a
standalone DAC digital amplier when not playing computer Based les via USB).
• Highest Quality Parts: The STRATOS features a high quality amplier and condenser supporting its high
performance analog circuit
• High End Audio Grade Connections: The STRATOS is equipped with gold-plated Teon-insulated FURUTECH
FP-900 RCA jacks and High End Performance FT-783M XLR Sockets with an extremely high quality aluminum
chassis and machined volume knob.
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High Performance 32bit 384kHz Stereo USB DAC / 24bit 192kHz ADC Recording Interface
PANTONE Cool Gray 3C 印刷字
PANTONE Black C 底色
■ Front Panel
Functions and Part names
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1
4
2
1. Power / Stand By Switch
2. Toggle switch to choose recording attenuation or amplication /dB: -6dB, 0dB, or +6dB.
3. Clip Signal Indicator: Clip (Red/Led), When the Rec/dB signal light comes on, adjust the recording attenuation with the toggle switch.
4. DSD Indicator: sample rates will indicate according to the computers sample rate signal 2.8M, 5.6M or 11.2M
5. USB DAC (digital source - Mac or Windows USB connection): sample rates will indicate according to the computers sample rate settings
High Performance 32bit 384kHz Stereo USB DAC / 24bit 192kHz ADC Recording Interface
Settings of Windows 7, 8 and 10
Computer settings
A few simple steps are required to record from the Line Level Inputs
Computer Requirements
Hardware: One USB 2.0 port Operating System: Windows7 or higher, Mac OS10.7 or higher
Connections
Connect the STRATOS to the computer with a USB cable and power on the STRATOS. Install the STRATOS driver
which can be downloaded from: http://www.adl-av.com/products/usbdac/stratos/
System Settings for Recording at 24bit/192000Hz
In Control Panel choose Sounds and Audio Devices. Below are screenshots of the various settings.
Playback Tab
Ensure the “FURUTECH ADL STRATOS” is selected as the Default
Playback Device.
Double-Click the “FURUTECH ADL STRATOS for Playback Properties
Playback-Listening Levels Tab
For both Playback and Recording ensure SPEAKER
OUT Levels are set to 100%
Playback-Advanced
During recording it is advisable to set the playback sample rate and bit depth
here to 24bit/192000Hz.
Recording Tab
Ensure the “ADL STRATOS” is selected as the Default Recording Device.
Double-Click the Line Input for Recording Properties
“Line” Levels Tab
In order to achieve the best possible recording quality
the circuit Gain has been optimized and depending
on source input levels, recording levels on operating
systems should be set be 100% recording level to
avoid distortion (adjustments of the recording level
may be required to avoid distortion).
Recording Quality
System settings for Recording at 24bit/192000Hz Double-Click the “ADL
STRATOS” for Line Properties
Advanced Tab
Ensure the sample rate and bit depth is set to 2 channel, 24bit/192000Hz
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Settings of Mac OS
Recording Cautions:
1. The computer Sound application playback and recording sample rates are set at 24bit/192000Hz.
2. Clip signal: during recording there is the possibility that input level will exceed the circuit Gain. Therefore to avoid any
distortion it may be necessary to adjust recording attenuation. When the Rec Att/db signal light comes on, adjust the recording
attenuation with the toggle switch.
3. In order to achieve the best possible recording quality the circuit Gain has been optimized and depending on source
input levels, recording levels on operating systems should be set be 100% of maximum recording level to avoid distortion.
(Adjustments of the recording level may be required to avoid distortion).