Recording Tech SC220 MKII
A two-channel USB audio interface for microphones, line sources, instruments, monitoring, and computer capture.
HARDWARE GUIDE • SC220 MKII / SC220 MK2
Recording Tech
SC220 MKII
A practical reference for public specifications, front-panel functions, microphone and instrument connections, karaoke-processor integration, Windows and OBS setup, and the questions users are most likely to ask.
2-channel USB audio interfaceUSB-C / OTG publicly claimedOpen verification status
PRODUCT IDENTITY
Three products that should not be confused.
SC220 MKII is an audio-interface hardware product. SC220 Live is a Windows mixing application. KTV Pro K500 is a separate karaoke processor.
SC220 Live
Combines SC220 input with PC audio, ASK-P Signature processing, metering, ducking, and broadcast routing.
KTV Pro K500
Processes microphones, music, and karaoke effects before or outside the computer capture stage.
Compatibility must not be assumed. This page documents the SC220 MKII hardware. SC220 Live support for the MKII remains unconfirmed until a physical unit is tested and its Windows input/output names are documented.
PUBLIC SPECIFICATIONS
What is publicly claimed for the SC220 MKII.
The values below come from consistent public product descriptions, not from an official datasheet or independent laboratory measurement.
| Area | Public information | Status | Use note |
|---|---|---|---|
| Product type | Two-channel USB audio interface | Public claim | Two sources can be handled as separate channels. |
| Maximum format | 24-bit / 192 kHz | Not measured | Actual Windows format options still need to be recorded. |
| Inputs | Two XLR/TRS combo inputs | Public claim | Mic, line, and instrument operation is advertised. |
| Phantom power | +48 V | Not measured | For condenser microphones that require phantom power. |
| PAD | −20 dB | Not measured | For hot line-level signals or clipping sources. |
| Input mode | Line / Instrument | Public claim | Instrument for guitar/bass; Line for processors and mixers. |
| Metering | Real-time LED VU meter | Public claim | Use it to avoid excessive input level. |
| Computer connection | USB Type-C | Public claim | Use a data-capable USB cable. |
| Mobile | OTG smartphone/mobile support | Not tested | Power, OS, and application support are undocumented. |
| Monitoring | Stereo monitor output, separate headphone level, direct monitoring | Not mapped | Routing and control behaviour require unit testing. |
| Driver / ASIO | No verifiable official information found | Unverified | Do not download drivers from random websites. |
| Hardware loopback | Unknown | Unverified | SC220 Live uses software routing such as VB-CABLE. |
CONTROLS & PORTS
Understand each function before connecting equipment.
The illustration is an educational schematic, not a dimensionally accurate panel reproduction. Always check the labels on the physical unit.
SC220 MKIISCHEMATIC — NOT TO SCALE
INPUT 1
PADLINE / INST
INPUT 2
PADLINE / INST
+48 VMONITOR LEVELPHONES LEVELUSB-C / OUTPUT
Combo inputs 1 and 2
XLR for microphones; TRS/TS jack for line or instrument sources.
Input gain
Sets the analogue level before conversion. Reduce hardware gain first when clipping occurs.
+48 V phantom power
Use only for condenser microphones or devices that explicitly require it.
−20 dB PAD
Attenuates a source that remains too hot, particularly a mixer or karaoke-processor output.
Line / Instrument
Line for line-level equipment; Instrument for guitar or bass pickups.
Meter, monitor, and headphones
Metering helps prevent overload; monitor and headphone level controls do not replace input gain.
CONNECTION DIAGRAMS
Six practical signal paths.
Begin with low levels. Set hardware input gain while watching the meter, then adjust monitor and software levels separately.
Dynamic microphone
Connect by XLR, leave +48 V off, use mic mode, and raise gain gradually.
Dynamic mic → XLR → SC220 MKII → USB → WindowsCondenser microphone
Lower gain, connect by XLR, enable +48 V only when required, then raise gain.
Condenser mic → XLR → +48 V → SC220 MKIIGuitar or bass
Use a 6.35 mm cable and select Instrument/INST for an appropriate high-impedance input.
Guitar / bass → INST → SC220 MKII → DAWKaraoke processor or mixer
Use Line mode. Engage PAD if the source remains too hot even with low input gain.
Processor L/R → LINE 1/2 → PAD if needed → SC220 MKIISC220 Live into OBS
Use this path only after the MKII appears as a stable Windows endpoint and application compatibility is confirmed.
SC220 MKII → SC220 Live → VB-CABLE → OBS / TikTok LiveMonitoring without echo
When direct monitoring is active, disable duplicate software monitoring to avoid doubled audio.
Input → Direct monitor → Headphones / monitor speakersOPERATION
A safe sequence from silence to a clean signal.
Input gain, application fader, monitor volume, and headphone volume are different controls and should be treated separately.
Prepare the connection
- Lower gain and monitor volume.
- Connect the correct source.
- Select Line or Instrument as required.
- Enable +48 V only when necessary.
Confirm device detection
- Use a data-capable USB cable.
- Check Windows Sound and Device Manager.
- Match sample rates between applications.
- Record the exact endpoint names.
Set level at the source
- Speak or play at real performance level.
- Raise gain without reaching clipping.
- Use PAD for excessively hot line sources.
- Then adjust software faders.
Select the correct input
- Add Audio Input Capture.
- Select the SC220 MKII endpoint.
- Use mono for a single microphone when needed.
- Make a test recording before streaming.
Validate before GO LIVE
- Select the detected hardware input.
- Select PC Audio and Stream Output.
- Check meters and left/right mapping.
- Confirm there is no echo or clipping.
OTG is not guaranteed universally
- Use a suitable data cable or adapter.
- Check the power requirement.
- Test applications individually.
- Do not promise universal phone support.
COMPATIBILITY MATRIX
Supported platforms versus open questions.
The status is deliberately conservative. “Unverified” means there is not enough official documentation or local test evidence.
| Platform / use | SC220 MKII hardware | SC220 Live | Status |
|---|---|---|---|
| Windows 10/11 x64 | Marketed for computers | Official application platform | MKII endpoints require testing |
| OBS Studio | Expected as a Windows audio input | Can send a mix through VB-CABLE | End-to-end path must be tested |
| TikTok Live Studio | Through a Windows endpoint | Through Stream Output | Not tested with MKII |
| Android OTG | Claimed in product listings | Not available | Power and app support unverified |
| iOS / iPadOS | No official documentation found | Not available | Unverified |
| macOS | No official documentation found | Not available | Unverified |
| ASIO | Driver support unknown | Depends on available endpoints | Unverified |
| Hardware loopback | Unknown | Uses software routing | Do not assume it exists |
TROUBLESHOOTING
Answers to the most common search questions.
Start at the hardware and Windows layers before changing DSP or application faders.
The SC220 MKII does not appear in Windows.
Use a data-capable USB cable, try another USB port without a hub, restart the interface, and check Windows Sound and Device Manager. Record the hardware ID if it appears as an unknown device.
Does it need a dedicated driver or ASIO?
No verifiable official driver page has been found. Do not install drivers from random websites. First document the device name and formats exposed by Windows.
Why is a microphone only on the left channel?
A single microphone is mono on one input. Select the matching mono channel or enable mono in OBS or the DAW.
A condenser microphone produces no signal.
Confirm that an XLR cable is used, the microphone requires phantom power, +48 V is enabled, gain is sufficient, and the cable is working. Lower gain before switching phantom power.
When should the −20 dB PAD be used?
Use it when a mixer, karaoke processor, or other source still clips with low input gain. PAD does not replace correct gain staging.
What is the difference between Line and Instrument?
Line is for processors, mixers, and line-level outputs. Instrument/INST is for guitar or bass pickups requiring a high-impedance input.
Why do I hear echo or doubled audio?
Direct monitoring and software monitoring may be active together. Choose one monitoring path or stop the application from returning the input a second time.
Why does it clip even after lowering the OBS fader?
The preamp may clip before audio reaches the computer. Lower hardware input gain or engage PAD first; an OBS fader cannot repair an already distorted analogue signal.
Does the SC220 MKII have hardware loopback?
It is unverified. Do not depend on loopback until the actual endpoints and routing are tested. SC220 Live uses software routing to endpoints such as VB-CABLE.
Can it be used directly with Android?
OTG is claimed in public product information, but phone compatibility, power, adapters, and application support have not been tested.
Does SC220 Live support the SC220 MKII?
Not yet confirmed. Minimum validation should record endpoint names, channel mapping, sample rates, capture stability, monitoring output, and reconnect behaviour.
VERIFICATION CHECKLIST
Data to collect from a physical unit.
These tests can move each item from “unverified” to accountable technical documentation.
Device identity
Endpoint names, hardware IDs, input/output count, reconnect, and sleep/wake behaviour.
Sample rates & channel map
Windows formats, mono/stereo mapping, ASIO/WASAPI, and inputs 1/2.
Gain, PAD & phantom
Clipping point, actual attenuation, phantom voltage, noise floor, and Line/Instrument response.
Direct monitor
Headphone/monitor routing, latency, stereo behaviour, and interaction with PC playback.
OBS & SC220 Live
Stable capture, mono handling, VB-CABLE, reconnect, buffering, and long-duration streaming.
USB OTG
Cable/adapter, power requirement, Android/iOS, compatible applications, and channel availability.
SOURCES & LIMITATIONS
Transparency is more valuable than marketing numbers.
This page will be updated when an official manual, datasheet, or measured unit data becomes available.
Sources for public product claims:
- Recording Tech RT-SC220 MK2 listing — Destiny Sound / Blibli
- Urban Digi Essentials — SC220 MKII USB-C OTG Dual XLR listing
Not an official manual. Retail listings are used only to map public claims and user information needs. Performance, drivers, latency, loopback, and compatibility require official documentation or local measurements.