SU-9 - Earphones S.M.S.L - Free user manual and instructions
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| Product Type | Desktop DAC & Headphone Amplifier |
| Brand | S.M.S.L |
| Model | SU-9 |
| Dimensions (approx.) | 220mm x 180mm x 50mm |
| Weight | About 1.2 kg |
| Power Supply | AC 100-240V, 50/60Hz |
| DAC Chip | ESS ES9038PRO (typical for SU-9) |
| Inputs | USB, Optical, Coaxial, Bluetooth (optional) |
| Outputs | 6.35mm headphone jack, RCA line out, XLR balanced out |
| Headphone Impedance | Supports 16-600 ohms |
| Sampling Rate | Up to 768kHz PCM, DSD512 |
| Volume Control | Analog volume knob with relay control |
| Display | OLED screen showing input, volume, sampling rate |
| Remote Control | Infrared remote included |
| Cleaning | Wipe with dry soft cloth; avoid liquid cleaners |
| Safety | Do not expose to moisture; use only supplied power adapter |
| Spare Parts & Repairability | Contact S.M.S.L support; no user-serviceable parts |
| General Information | High-resolution audio DAC/amp for home audio systems |
Frequently Asked Questions - SU-9 S.M.S.L
How do I connect the SU-9 to my computer?
Use a USB cable (Type-B to Type-A) from your computer to the USB input on the SU-9. Install the appropriate driver if needed (Windows), or it may work plug-and-play with macOS/Linux.
Can I use the SU-9 with a gaming console?
Yes, if the console has optical or USB audio output. Use the optical input for best compatibility, or USB if supported.
What headphone impedance is supported?
The SU-9 supports headphones from 16 to 600 ohms, covering most dynamic and planar magnetic models.
Does the SU-9 have Bluetooth?
Some versions include Bluetooth 5.0 with aptX HD/LDAC. Check your unit's specifications or the packaging.
How do I switch between inputs?
Press the input button on the front panel or use the remote control. The OLED display shows the current input.
Is the SU-9 a balanced amplifier?
Yes, it has a fully balanced circuit design with XLR outputs and a balanced headphone amplifier section.
What is the maximum output power?
The headphone output delivers up to 1.5W into 32 ohms (balanced) and 0.5W into 32 ohms (single-ended).
Can I use the SU-9 as a standalone DAC without headphones?
Yes, connect it to an amplifier or active speakers via RCA or XLR line outputs.
How do I clean the SU-9?
Turn off and unplug the device. Use a soft dry cloth to wipe the exterior. Do not use any liquids or solvents.
What should I do if the device stops working?
Check power connections and try a different input. If the issue persists, contact S.M.S.L support or refer to the warranty.
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Download the instructions for your Earphones in PDF format for free! Find your manual SU-9 - S.M.S.L and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. SU-9 by S.M.S.L.