Turntables, known for their nostalgic charm and unique analog sound, have made a remarkable comeback in recent years. When setting up a turntable, you may come across terms like “phono” and “AUX,” which refer to different types of connections. In this comprehensive guide, we will delve into the distinctions between a turntable’s phono and AUX connections, helping you understand their roles, compatibility, and how they affect your vinyl playback experience.
Phono Input
What Is a Phono Input?
A phono input, also known as a phono stage, is a specialized input on audio equipment designed to connect to a turntable. It is named after the phonograph, which is an older term for a turntable. The phono input serves two primary functions:
- Amplification: The phono input amplifies the low-level audio signal generated by the turntable’s cartridge. Vinyl records are encoded with a lower output level than other audio sources, and this amplification brings the signal to a level suitable for playback.
- Equalization (EQ): Vinyl records are also subject to equalization during the recording process, which compensates for the limitations of the format. The phono input includes a built-in equalization curve (typically the RIAA curve) to restore the audio to its correct tonal balance.
When to Use a Phono Input
You should use a phono input when your turntable does not have a built-in phono preamp (also known as a phono stage). In such cases, the phono input on an amplifier or receiver is essential for correct amplification and equalization of the turntable’s audio signal.
Compatibility
Phono inputs are typically found on older stereo receivers and amplifiers, especially those manufactured before the 1980s. If your audio equipment has a phono input, it is clearly labeled as such. Modern receivers and amplifiers often omit the phono input, assuming users have turntables with built-in phono preamps or external phono preamps.
AUX Input
- What Is an AUX Input? : An AUX (auxiliary) input is a versatile audio input found on various audio devices, including receivers, amplifiers, speakers, and more. The AUX input is designed to accept line-level audio signals, making it compatible with a wide range of audio sources, such as CD players, MP3 players, smartphones, and, in some cases, turntables.
- When to Use an AUX Input : You should use an AUX input when your turntable has a built-in phono preamp or when you connect an external phono preamp to your turntable. In this setup, the turntable outputs a line-level signal that can be connected directly to an AUX input on an amplifier, receiver, or other audio equipment.
- Compatibility : AUX inputs are commonly available on modern audio equipment and are labeled as “AUX,” “LINE,” or “AUDIO IN.” They are versatile and can accommodate a variety of audio sources, making them a convenient choice for turntables with built-in phono preamps or external phono preamps.
Making the Right Connection
Turntable Types
When deciding between phono and AUX connections, consider the type of turntable you have:
- Turntable with Built-In Phono Preamp: If your turntable has a built-in phono preamp, it outputs a line-level signal suitable for an AUX input. Connect it to the AUX input on your amplifier or receiver.
- Turntable without Built-In Phono Preamp: In this case, you will need to connect your turntable to a phono input on your amplifier or use an external phono preamp and then connect the line-level output of the preamp to an AUX input.
Proper Connection
To ensure a correct and high-quality connection:
- Use the appropriate cables (RCA cables) to connect your turntable to the chosen input (phono or AUX) on your amplifier, receiver, or audio equipment.
- Make sure the turntable, phono preamp (if used), and amplifier or receiver are powered off before making any connections.
- Check the input settings on your amplifier or receiver to select the appropriate input source (phono or AUX).
Conclusion
Understanding the difference between phono and AUX inputs is crucial when setting up your turntable. Whether you have a turntable with a built-in phono preamp or an external phono preamp, knowing which input to use ensures that you achieve the correct amplification and equalization, resulting in the best possible sound quality from your vinyl records. By making the right connection, you can fully enjoy the rich and warm analog sound that turntables are cherished for.