high-passedmic-in / MIC
Karaoke mic channels are almost always high-passed somewhere between 100 and 150 Hz to keep handling noise down. Anything with real low end, a kick drum especially, will sound thin through it.
- Domain
- Audio
- Ports
- 5
- Conductors
- 10
- Source
- Estimated
Ports and conductors
Every conductor Zikro reasons about on this device, with the voltage it sits at in normal use and the voltage past which the pin can be damaged. These figures are compared against the other side of a connection, so a wrong row here becomes a wrong verdict.
MIC mic-in
6.35 mm TS jack| Conductor | Contact | Signal class | Direction | Nominal | Abs max | Impedance | DC bias |
|---|---|---|---|---|---|---|---|
| MIC | 1 | Mic level | Input | 10 mV | 5 V | in 2.2 kΩ | Present |
| GND | 2 | Mic level | Bidirectional | 0 V | unknown | out 0 Ω | None |
AUX L aux-in-left
RCA socket| Conductor | Contact | Signal class | Direction | Nominal | Abs max | Impedance | DC bias |
|---|---|---|---|---|---|---|---|
| AUX L | 1 | Line level | Input | 1 V | unknown | in 10 kΩ | None |
| GND | 2 | Line level | Bidirectional | 0 V | unknown | out 0 Ω | None |
AUX R aux-in-right
RCA socket| Conductor | Contact | Signal class | Direction | Nominal | Abs max | Impedance | DC bias |
|---|---|---|---|---|---|---|---|
| AUX R | 1 | Line level | Input | 1 V | unknown | in 10 kΩ | None |
| GND | 2 | Line level | Bidirectional | 0 V | unknown | out 0 Ω | None |
SPK speaker-out
2-pole screw terminal| Conductor | Contact | Signal class | Direction | Nominal | Abs max | Impedance | DC bias |
|---|---|---|---|---|---|---|---|
| SPK+ | 1 | Speaker level | Output | 10 V | unknown | out 4 Ω | None |
| SPK- | 2 | Speaker level | Output | 10 V | unknown | out 4 Ω | None |
DC 12V dc-in
DC barrel socket 5.5 x 2.1 mm| Conductor | Contact | Signal class | Direction | Nominal | Abs max | Impedance | DC bias |
|---|---|---|---|---|---|---|---|
| +12V | 1 | Power rail | Input | 12 V | 15 V / 3 A | unknown | None |
| GND | 2 | Power rail | Bidirectional | 0 V | unknown | out 0 Ω | None |
Quirks
The things no numeric field carries, and the things that actually break builds.
dc-biasmic-in / MIC
The mic contact usually sits at a few volts of DC through a bias resistor, to power an electret capsule. Connecting a line output to it couples that DC into the source, so a series blocking capacitor is wanted.
mono-input
One TS jack, one channel. A stereo source needs summing before it gets here; plugging a TRS plug in simply shorts the right channel to ground.
bridged-output
The speaker terminals are usually a bridged pair with neither side at ground. Do not tie SPK- to any other ground in the system.
unverified
This profile describes the class of board rather than one product. Every number here is an informed guess, which is why its confidence is low: check it against your own board before trusting a verdict built on it.
Check this against what you are wiring it to
Put both devices in a project, connect the actual conductors, and read the verdict before you solder anything.
Use in a projectRelated devices
Last reviewed 30 Aug 2026, sourced from estimated.