S.M.S.L C100 User Manual

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 only the voltage specified on this unit. Using a higher voltage is dangerous and may cause fire, damage to the unit, or personal injury. The 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 yourself. Contact a salesperson 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 (e.g., 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. Term of Service: Foshan Shuangmusanlin Technology Co., Ltd. promises to offer good-quality products. If the product is broken within 7 days after purchasing under normal use, customers can choose return, replacement, or repair (return only if the product does not affect second sales). For failures within one year under normal use, free repair will be provided.

2. Proof of Purchase: The date of purchase is based on the invoice or receipt issued by the seller. For online purchases, a screenshot of the transaction is acceptable.

3. Warranty Void Conditions: The following situations are not covered by the return/replacement/warranty service:

• Damage caused by inappropriate use, including use in non-normal working environments or failure to follow instructions.
• Dismantling, refitting, or repairing by the user privately.
• Damage caused by using non-specified or non-accredited accessories.
• Damage to the unit's QC or warranty seals.
• Failure to provide valid proof of purchase.
• Items not belonging to the company's products.

4. Repair Method: Repairs are typically handled by sending the unit in. For other regions, please refer to the regulations of local sales agents and national laws.

Features

• USB supports MQA.
• Ultra-tiny shape design supports a variety of placement ways.
• Features the latest XMOS XU-316 solution, supporting sampling rates up to 32bit/768kHz and DSD512.
• Incorporates the new self-developed CK-03 clock processing circuit, significantly reducing system jitter.
• Uses one AKM AK4493S chip, carefully tuned to achieve an unprecedented 0.00013% distortion.
• Built-in high-performance power filtering system allows for optimal performance using only the USB interface for power supply.
• Anodized CNC aluminum alloy housing.
• Certified by the Japan Electronics Association for Hi-Res Audio.
• Full-featured remote control included.

Specifications

Specifications are subject to change without notice.

Parts Introduction

Diagram showing the front and rear of the S.M.S.L C100 unit. The front has a touch button, display, and MQA indicator. The rear shows various input/output ports.

Front Panel Components:

• 1. Knob: Touch button.
• 2. Display: Shows device status, input, volume, etc.
• 3. MQA Indicator light: Indicates MQA format playback status.
• 4. Remote window: Infrared receiver for the remote control.
• 5. RCA output: Single-ended line output.

Rear Panel Inputs:

• 6. Coaxial input
• 7. Optical input
• 8. Bluetooth antenna
• 9. USB Input

Package List

• 1x SMSL C100 Unit
• 1x Remote Control
• 1x USB Cable
• 1x AC Power Cable
• 1x Bluetooth Antenna
• 1x Warranty Card
• 1x User Manual

Operating Instructions

Power / Input Key

• Hold the key to switch power OFF (?). Press the key to switch power ON.
• Short press the key to cycle through input sources: USB, Optical, Coaxial, Bluetooth. The display will show the selected input (e.g., USB → OPT → COA → BT).

Turn Off Display

The C100 features a display-off mode for an undisturbed listening experience. This function can be toggled on or off using the "FN" key on the remote controller. When the display is off, any operation will briefly reactivate the display for 5 seconds before turning off again.

Display Instructions

• When starting up, the unit will display C100.
• Upon startup, the unit will sequentially display C100, volume, and the current sampling rate for 2 seconds each.
• If there is no input signal or the sampling rate exceeds the unit's range, the display will show ---.
• When switching inputs, the display will show USB, OPT, COA, or BT.
• When adjusting the volume, the display shows the volume level in the range of -00 (max) to -40 (min).
• When setting filters, the displayed range is FL1 ~ FL6.
• When playing DSD files, the display shows: 64 for DSD64, 128 for DSD128, 256 for DSD256, 512 for DSD512.

Function Introduction

MQA Indicator Light Color

• Green: Indicates streaming or files in MQA format.
• Blue: Indicates playback of an MQA Studio file.
• Magenta: Indicates the final unfold of the MQA file, displaying the original sample rate.

Muting

Press the MUTE (?) key on the remote controller. If the display is not OFF, the volume value will flash. Press the MUTE key again or adjust the volume to cancel muting.

PCM Filter Setting

Use the PCM filter switch button on the remote control to switch between 6 filters:

• FL1 (Sharp Roll-off filter)
• FL2 (Slow Roll-off filter)
• FL3 (Short Delay Sharp Roll-off filter)
• FL4 (Short Delay Slow Roll-off filter)
• FL5 (Super Slow Roll-off filter)
• FL6 (Low Dispersion Short Delay filter)

About MQA

MQA (Master Quality Authenticated) is an award-winning British technology for high-resolution audio encoding, combining very high sampling rates with small file sizes. MQA audio delivers the sound of the original master recording.

For more information, visit: https://www.mqa.co.uk/how-it-works

MQA File Playback

• C100's MQA playback does not require special software. It supports ASIO or WASAPI audio output, compatible with software like foobar2000 or Audirvana. For optimal MQA audio playback, it is suggested to set the computer's volume to maximum.
• The C100 LED next to the MQA logo glows green or blue to indicate decoding and playback of MQA audio or files, ensuring the sound matches the source material. A blue light indicates an MQA Studio file, which has been approved in the studio by the artist/producer or verified by the copyright owner.
• When playing an MQA file, the display shows the original sample rate of the audio recording.

MQA and the Sound Wave Device are registered trademarks of MQA Limited. ©2016

Remote Control

Diagram of the remote control unit (S.M.S.L RC-8C).

Using the Remote Control

• If the remote control is not working even at close range, replace the batteries with new ones.
• If the remote control will not be used for a long period, remove the batteries.
• Dispose of used batteries according to local regulations.

Remote Control Functions:

• Power ON/OFF (?): Switches the unit on or off.
• Up (⬆️): Navigates up in menus.
• MENU/OK (✅): Accesses menus or confirms selections.
• Next level menu (➡️): Enters sub-menus.
• Return (⬅️): Goes back to the previous menu or screen.
• Down (⬇️): Navigates down in menus.
• Input select (?️): Cycles through input sources.
• Mute (?): Mutes or unmutes audio output.
• FN: Pressing the FN button for 5 seconds turns the display off.
• Volume + (➕): Increases volume.
• Volume - (➖): Decreases volume.

Note: This remote controller uses 2 x AAA batteries.