Can headphone out be used as line out?
So can a headphone output be a workable substitute for a line level output in other situations? Sure, in a pinch it will usually work okay. Headphone amps usually aren’t as free from noise and distortion as good line amps, but in many situations they can be used without significant degradation in overall sound quality.
What is the impedance of an audio transformer?
Audio Transformer Impedance Matching For example, a typical loudspeaker impedance ranges from 4 to 16 ohms whereas the impedance of a transistor amplifiers output stage can be several hundred ohms.
How many volts does a headphone jack put out?
General
| Function | Device Support |
|---|---|
| Maximum output voltage drive | 150mV |
| Mic bias resistance | Required |
| Mic bias voltage | 1.8V – 2.9V |
How much power does a headphone jack put out?
(Actually you need less than 65 mW since most people don’t listen to their loudspeakers at 1 meter.) And this is exactly what you find in hi-fi receivers—their headphone jacks typically provide only 10-20 mW of output power.
What is line OUT used for?
Alternatively referred to as audio out and sound out, the line out jack is found on computer sound cards. It allows external speakers, headphones, or other output devices to connect to the computer, transferring computer generated audio to the devices so that it can be heard.
What’s the difference between line in and line out?
Consumer electronic devices concerned with audio (for example sound cards) often have a connector labeled line in and/or line out. Line out provides an audio signal output and line in receives a signal input.
What is a good impedance level for headphones?
between 20-40ohms
The impedance is measured in ohms which often range between 8 & 600 ohms, depending on the model of the headphone/earphone. However, the impedance ranging between 20-40ohms is said to be a decent choice for casual music listeners and 64 or above for an audiophilia.
How much voltage does a headphone need?
For a sine wave, this means a voltage of 0.77 volts RMS (2.2 volts peak-to-peak) and a current of 1.3 milliamperes RMS (3.6 milliamperes peak-to-peak). Line out levels are very different from headphone levels; headphone impedances range from 600Ω to as low as 8Ω.
Is lower impedance better for transformer?
The lower the impedance, the lower the voltage required to produce full load current. Lower imped- ance transformers allow higher fault currents to flow at a particular voltage. Measuring impedance in units of percentage greatly simplifies the calculation of currents and voltages in a power system.
What are line out vs headphone out?
The “line level” out on something like a CD player, for example, typically has an output impedance of 500-1000 ohms, whereas a headphone out will usually have a much lower impedance to be able to drive headphones.
What does headphone line out mean?
What is the impedance of a headphone?
Headphone impedance will typically range from 8 to 600 ohms, which is we now know is much lower than a line level input.
Can I use low impedance headphones with a high output amplifier?
This is why low impedance headphones are not recommended for high output impedance amplifiers, such as OTL tube designs like the Bottlehead Crack or Darkvoice 336SE. Stick with very high impedance headphones (200 ohms and up) for this type of amplifier.
Can a headphone signal be output from a line level input?
If you connect a headphone signal to a several thousand ohm line level input it will behave pretty much like a line level signal. The key here is the voltage. How much voltage does your headphone amp produce?
What is the difference between headphone output and headphone output?
Headphone outs are designed to drive lower impedances posed by headphones. Headphone outs are optimized to drive high current with reasonable distortion and noise with low impedance loads. In conclusion, a headphone output is optimized for lower impedance loads and is capable of supplying more power to these loads.