When setting up a turntable-based audio system, selecting the right components is crucial for achieving optimal sound quality and performance. Two key components in the setup are the amplifier and the preamplifier (preamp). While they both play important roles in the signal chain, understanding their functions and differences is essential for making an informed decision. In this article, we will explore the distinctions between an amplifier and a preamp specifically for turntable applications to help you choose the right option for your setup.
Amplifier:
An amplifier, also known as a power amplifier, is responsible for boosting the low-level audio signal from the turntable or preamp to a level that can drive the speakers. It amplifies the signal, providing the necessary power to reproduce sound through the speakers. Amplifiers come in various types, including integrated amplifiers (combining preamp and power amp functions) and separate power amplifiers (used in conjunction with a separate preamp).
Preamp:
A preamplifier, or preamp, is designed to amplify the low-level signal produced by the turntable’s cartridge. It also provides the necessary equalization (RIAA equalization for vinyl records) and signal processing to prepare the signal for amplification. Preamps are particularly important for turntables since the signal produced by the cartridge is at a much lower level than other audio sources, such as CD players or streaming devices.
Key Differences and Considerations:
- Signal Level: The main distinction between an amplifier and a preamp lies in the signal level they process. Amplifiers handle high-level signals suitable for driving speakers, while preamps work with low-level signals from the turntable’s cartridge.
- Equalization and RIAA Correction: Preamps include built-in equalization circuits, such as the RIAA equalization curve, which corrects the frequency response of vinyl records during playback. Amplifiers do not typically include these equalization functions.
- Compatibility: Most modern amplifiers have built-in preamp stages, allowing them to directly connect to turntables with a standard moving magnet (MM) or moving coil (MC) cartridge. In such cases, a separate preamp is not required. However, if your amplifier lacks a dedicated phono input, an external preamp is necessary to ensure proper signal amplification and equalization.
- Flexibility: Using a separate preamp provides more flexibility in terms of customization and upgrading. It allows you to choose a preamp with specific features, adjustability, or even switch between different cartridge types.
| Feature | Amp | Preamp |
|---|---|---|
| Purpose | Amplifies the signal from the turntable | Prepares the signal from the turntable for amplification |
| Components | Amplifier only | Preamp and amplifier |
| Size | Typically larger | Typically smaller |
| Cost | Typically less expensive | Typically more expensive |
| Performance | May offer better performance | May not offer the same level of performance |
Conclusion:
When it comes to a turntable-based audio system, both amplifiers and preamps play crucial roles. An amplifier is responsible for providing power and driving the speakers, while a preamp handles the low-level signal amplification and equalization required for turntable playback. Integrated amplifiers with built-in preamp stages can simplify the setup process, while separate amplifiers and preamps offer flexibility and customization options. Assess your system requirements, existing equipment, and desired level of control to determine whether an integrated amplifier or a combination of separate amplifier and preamp best suits your needs. Ultimately, choosing the right option will ensure accurate signal amplification and an enjoyable listening experience from your turntable.
