How to Understand Amplification
The idea behind audio amplification is simple enough; most inputs don't have enough power to create sound that's loud enough to hear. An amp can take that signal and boost it to a level where the stereo system can do something with it.
What's the Difference Between Signal and Power?
The first thing to understand when looking at amplification is the difference between signal and power amps. While both devices boost signals, they do so in different ways and for different purposes. Naturally, they each have a purpose in the audio industry.
- Signal Amplification: This is described as the phono stage. It amplifies the voltage of a signal without significantly boosting the current. The idea is to increase the signal to the point that you can work with it, and also make sure that all your source signals from different devices are at the same level.
- Power Amplification: This is what you need to drive speakers rather than just headphones. It boosts the current as well as the voltage, so you get more power to drive your loudspeakers and create the sound you want.
What Does Integration Mean?
Many home Hi-Fi units are built out of a series of different components, often from different manufacturers. For example, even if you have a Luxman amplifier, your tuner and phono may be completely different brands. The idea behind an integrated amplifier is to combine the amp with the preamp into a single unit so you have one device to both boost the signal and drive the speakers. In short, it's a way to reduce the number of components without compromising the music. Most solid-state models offer a number of other features to improve the quality of your output by letting you shape the sound to your liking such as:
- Tone Controls: These are used to selectively amplify different frequencies so that you can bring out the bass or treble as you desire.
- VU Meters: These meters measure perceived loudness, so you can help manage your listening experience by giving you visual feedback as to where the audio is peaking. One advantage they have is that they respond similarly to the human ear.
Choosing an Amp
Whether you're an audiophile or a novice, choosing the right Luxman vintage amp is not difficult so long as you put a little thought into the process. Check both the features and inputs, you're going to want more than just a volume control even if it doesn't include a remote control. The front panel should let you switch easily between sources and your unit should work seamlessly with all your sources so that you can enjoy the music.
Content provided for informational purposes only. eBay is not affiliated with or endorsed by Luxman.