S M S L DO300 DAC Review User Manual

DO300
USER MANUAL

Ver 1.0

DO300 DAC Review

The contents of this manual may be changed with the edition, and are subject to change without notice.

Safety Notes

• Install this unit in a well ventilated, cool, dry, clean place-away from direct sunlight, heat sources, vibration, dust, moisture, or cold..

• Use the voltage specified on this unit Only. Using this unit with a higher voltage than specified is dangerous and may cause fire , damage to this unit, or personal injury.
  Our company will not be held responsible for any damage resulting from the use of this  unit with a voltage other than that specified.

• Do not attempt to modify or fix this unit by yourself. Contact ales person or customer service when any service is needed. The cabinet should never be opened for any reason.

• When not planning to use this unit for long periods of time (i.e. when going on vacation), disconnect the power cable from the AC wall outlet.

Important note:
The product specifications and information mentioned in this manual are for reference only. The content of this manual is subject to change without notice.

Warranty Terms

1. The Term of Service
   Foshan Shuangmusanlin Technology Co., Ltd promises to offer good-quality products. If the product is broken in 7 days after purchasing when you use it normally, you can choose to send it back for return, replacement or repairing (only the product does not affect the second sales can be returned ). Repairing for free in one year if you use it normally.

2. Date of purchase is in accordance with the date on invoice or receipt uesd by seller, and if you buy it on line, you can show the screenshot of trade.

3. If an inappropriate usage causes the unit damaged, the warranty will be void. As below.
   • All damages by inappropriate use, including using it under non-normal working environment or without following the instructions.
   • Dismantling, refitting, repairing by user in private.
   • Causing damage by using some fittings instead of the designative or accredited ones.
   • Cannot provide credible proof of purchase.

4. Sending it back to our company for repairing.

5. Contact your S.M.S.L Audio reseller for a return or replacement.

Features

• Support MQA decoding and MQA-CD;
• New 3rd generation XMOS XU-316, PCM support up to 32bit/768kHz, DSD support to DSD512;
• The new generation flagship DAC chip ES9039MSPRO of USA ESS has built-in MQA hard decoding;
• Designed with an eight-channel parallel circuit, the distortion is as low as a staggering 0.00005% (-125dB) and more stable.
• Using 11 high-end dual op amps and a large number of audiophile components;
• Adopt 2nd PLL to eliminate JITTER during SPDIF transmission;
• The new self-developed CK-03 clock processing circuit greatly reduces clock jitter;
• Support DOP independent display function, accurately determine the current decoding format;
• USB, optical fiber, coaxial , AES, I2S support DSD transmission, coaxial and optical fiber support DOP64;
• Use tempered glass to fully fit the color IPS display;
• Built-in low-noise power processing, while improving power efficiency, lower power consumption;
• Combined with multiple low-noise regulated power supplies, it provides a stable, reliable, efficient, and low-noise power supply system.
• Qualcomm high-end Bluetooth chip, support LDAC (24bit/96kHz), APTX/HD, SBC, AAC;
• High quality all-aluminum alloy shell, support high quality gold plated input and output connection terminals;
• Japan Audio Association (JAS) Hi-Res certification;
• Equipped with remote control and full-featured remote control.

Specifications

Later, Linux (Driverless)
MQA decoder| USB / Optical / Coaxial / AES
MQA-CD decoder| Optical / Coaxial / AES
Sampling rate & Bit Width:
USB PCM
DSD
Optical / Coaxial DoP| 44.1 ~ 768kHz(32bit)
2.8224 ~ 22.5792MHz(1bit)
44.1 ~ 192kHz(24bit)
DoP256(USB),DoP64(Optical / Coaxial)
Bluetooth:| 5.0
LDAC| 24bit/96kHz (990kbps/660kbps/330kbps)
aptX-HD| 24bit/48 kHz_576kbps
aptX| 16bit/44.1 kHz_352kbps
SBC| 16bit/44.1 kHz_328kbps
AAC| 16bit/44.1 kHz_320kbps
Power Consumption| <10W
Standby power| <0.5W
Size| 240x43x185mm (WxHxD)
Weight| 1.2kg / 2.64lb

SMSL reserves the right to make improvements which may result in specification or feature changes without notice.

Remote control

• If the remote control is still ineffective when it is close to the machine, replace it with a new battery.
• If the user does not use the remote control for a long time, remove the battery of the remote control.
• Dispose of used batteries in accordance with local regulations on battery disposal.

Operating the remote control

Note
This remote controller use 2 x R03/AAA batteries.

Display Interface and Instructions

1. Knob
2. Remote window
3. Display
4. RCA output
5. Bluetooth antenna| 6. Optical input
7. Balanced output
8. AES/EBU input
9. I²S input| 10. Coaxial input
11. USB input
12. AC IN(100-240VAC)
13. Power switch
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Package list

1 SMSL DO300
USB cable
1 Warranty card| 1 Remote control
1 AC power cable| 1 Bluetooth antenna
1 User manual
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Instructions

INPUTS

• USB
• BLUETOOTH
• OPTICAL
• COAXIAL
• AES/EBU
• I2S(HDMI)

OUTPUTS

• ALL LINE OUT
• BALANCED
• UNBALANCED

PCM FILTER

• FILTER OFF
• MINIMUM PHASE
• APODIZING
• LINEAR FAST
• LINEAR SLOW
• MINIMUM FAST
• MINIMUM SLOW
• LOW DISPERSION

DSD FILTER
There are 4 kinds of digital filtering in total. It’s the way that the digital operation means the clutter outside the audio Filter out, respectively

• 47kHz Cutoff
• 50kHz Cutoff
• 60kHz Cutoff
• 70kHz Cutoff

SOUND COLOR
There are 9 sound color settings in DO300.

• Rich1, Rich2, Rich3
• Tube1, Tube2, Tube3
• Crystal1, Crystal2, Crystal3

This setting is using the DSP of DAC, to make some different sound color, all of these settings will not change the frequency response curve. When set to “Standard”, this setting will be bypassed.

PRE MODE
PRE MODE is the volume adjustment function switch for the output interface.

• VARIABLE: The output interface volume is controlled.
• FIXED: The output interface volume is fixed.

DPLL

• MIN ~ MAX

(A total of 15 kinds, the default is 7 kinds. The larger the number is, the stronger the range to adapt to jitter, and the smaller the number, the better the performance against clock jitter.)
This DPLL setting is a special function of ESS series products. It can adjust the internal DPLL digital phase locked loop circuit Bandwidth, so that the chip achieves a balance between anti clock jitter and input tolerance.

Its function:

• When the clock stability of the input signal is good, this value can be reduced, so that the clock performance of the system is better;
• When the clock stability of the input signal is not good, the sound may be inter rupted. Increase this value can avoid the sound interruption! Especially when using TV as signal source!

FN KEY FOR

• OUTPUTS
• BLUETOOTH
• PHASE

I²S MODE

• NORMAL
• REVERSED

Note: This option is used to match different I²S interface standards, please check the interface definition of the signal source before use

AUDIO PHASE

• NORMAL (2+,3-)
• INVERTED (2-,3+)

DIMMER

• 5 second ~ 60 second

(The range is 5 seconds-60 seconds. After setting, the screen will automatically go off within this time, and the screen will re-light up if you operate the remote control or the knob at any time.)

BRIGHTNESS

• LEVEL 1 ~ LEVEL 6

RESET

• During Bluetooth input, long press the middle button of the knob, the system will only reset the Bluetooth pairing status;
• During other input, long press the middle button of the knob, the system will clear all settings, including Bluetooth.

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