![]() ![]() The more features a pre-amplifier is having, the longer the signal path would be, resulting in a less-clean, less transparent signal. Older pre-amplifiers are somewhat more interesting to the modern ones, as they usually have tone controls (bass, mid and treble controls) low-pass filters so you could integrate a sub-woofer, even high-pass filters and other functions like muting, dimming, stereo to mono conversion. Power amplifiers don’t like very high-impedance signals coming into them, as they will need to work harder increasing the Total-Harmonic-Distortion, just to achieve the same SPL.Ī pre-amplifier can start its life as a simple volume control for you analog or digital source, usually that is called a passive pre-amplifier. Pre-amplifiers are designed to have a very low output impedance in order to preserve the frequency response in its fullest. Undeniably, dedicated preamps are here for a reason, but what they really do? Can they do their job badly or can they elevate your listening experience to the next level? Do you really need one if you already have a DAC with a volume control? Great questions lads, I’ll try to answer all those question marks today.Ī preamp is a pre-amplifier and it is designed to amplify the weaker analog signal that is coming from your source by making it louder – by raising the voltage and prepare it for the next stage – for a power amplifier that follows. Nowadays, almost nobody is discussing about them, yet we have them in most audio sources of today such as DACs, CD players, receivers, turntables and tape players. Today I will be writing about the biggest unknowns of the Hi-Fi world: Preamps! But first, we should learn about them, how they really work and if you need one or not. ![]()
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