Understanding the differences between phono and line inputs is crucial when setting up audio equipment.  This knowledge ensures optimal sound quality and prevents potential damage to the equipment.  Here's a breakdown of the key differences between the two:


1. Signal Level:

  • Line inputs are designed to accept line-level signals, which are standard for most audio devices such as CD players, tape decks, and audio interfaces.  These signals are typically stronger and do not require any additional amplification.
  • Phono inputs, on the other hand, are specifically designed for turntables, which produce a much weaker signal known as phono-level.  This signal needs to be amplified and equalized to match the line-level signal.  Please be aware that connecting a line-level signal to a phono input can damage the receiving unit.


2. Equalization:

  • Phono inputs have a built-in equalization curve known as the RIAA curve, which is used to correct the frequency response of vinyl records during playback.  This curve boosts the bass and cuts the treble during recording, and then reverses the process during playback to restore the original frequency response.
  • Line inputs do not have any built-in equalization specifically tailored for vinyl records, as they are designed for standard line-level signals.


3. Grounding:

  • Turntables with phono outputs require a ground wire to be connected to the phono input to reduce unwanted noise and hum.  Line inputs do not require this additional grounding.


Minding these distinctions is key to correctly connecting your audio equipment, thereby guaranteeing the highest sound quality possible.  If you have any further questions or need assistance with your specific setup, feel free to reach out to our customer support team for personalized guidance.