Audio Fix / setup help
S.M.S.L C200: select an already-connected C200 input
S.M.S.L C200 — select an already-connected C200 input. Use the stated exact hardware and connection scope.
Manufacturer-documented Reviewed 2026-11-09 · Revision 1
Follow these checks in Audio Fix →When this guide applies
Exact S.M.S.L C200. Original C200 front headphones are the only used output. The current input works and intended destination is already connected. This is input selection, not pairing.
Connection scope: USB audio · Optical digital audio · Bluetooth. Symptom: Switching between devices isn’t working.
This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.
If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.
Checks and possible outcomes
Start at scope. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.
scope
Confirm the model and connection
Original C200 front headphones are the only used output. The current input works and intended destination is already connected. This is input selection, not pairing.
Look for: Confirm this exact setup and observation before continuing.
- If Yes, I confirm → Accept interruption of current media?
- If No / my setup differs → Continue with source and model support
- If I cannot confirm → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
input-consent
Accept interruption of current media?
Changing input interrupts media and may change level. Continue only outside calls/recordings with agreement to pause both sources and lower headphone level first.
Look for: Explicit informed acceptance is required before the next action.
- If I accept these effects → Pause both sources
- If No / leave this unchanged → Continue with source and model support
- If I cannot confirm → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
a1
Pause both sources
Pause the actively working current source and intended already-connected destination.
Look for: Observe the named indication or available control; stop if absent.
- If I completed this check → Lower headphone level
- If I cannot complete this → Continue with source and model support
- If I cannot determine this → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
a2
Lower headphone level
Keep rear line outputs unused and lower front headphone volume.
Look for: Observe the named indication or available control; stop if absent.
- If I completed this check → Select input
- If I cannot complete this → Continue with source and model support
- If I cannot determine this → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
a3
Select input
Short-press the knob to INPUT and rotate to USB, OPT or BT matching the actual destination. BT must already be paired and actively connected.
Look for: Observe the named indication or available control; stop if absent.
- If I completed this check → Exit menu
- If I cannot complete this → Continue with source and model support
- If I cannot determine this → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
a4
Exit menu
Hold the knob for two seconds to return to the main display.
Look for: Observe the named indication or available control; stop if absent.
- If I completed this check → Compare quietly
- If I cannot complete this → Continue with source and model support
- If I cannot determine this → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
a5
Compare quietly
Verify the displayed input before resuming destination media at low level.
Look for: Observe the named indication or available control; stop if absent.
- If I completed this check → Check the result
- If I cannot complete this → Continue with source and model support
- If I cannot determine this → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
observe
Check the result
Does the displayed input carry the intended destination quietly?
Look for: Confirm this exact setup and observation before continuing.
- If Yes, I confirm → Checks completed
- If No / my setup differs → Continue with source and model support
- If I cannot confirm → More information is required
- Manufacturer-documented S.M.S.L C200 — official c 200 manual ↗Exact C200 English PDF pages 14–18: remote, knob, INPUT/OUTPUT/GAIN/DPLL/BRIGHTNESS — C200 short knob press enters menu, rotation selects, two-second hold exits. INPUT USB/BT/OPT/COA; OUTPUT Lo line or Ho headphones; gain GL/GH. DPLL1–9 increases input tolerance at higher settings. Brightness bL1–8 and original remote power control documented.Exact S.M.S.L C200. · Source checked 2026-11-09
Possible result
More information is required
An unknown state is not a diagnosis. Record the last visible indication and consult the exact model instructions.
insufficient data
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
Continue with source and model support
Keep the source, connection and last observation. Do not reset, open equipment or change full-scale output to compensate for an unconfirmed result.
next support
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
Checks completed
The requested observation was confirmed in this setup. It does not establish a hardware repair or guarantee another source behaves the same.
steps completed
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.