The Audio Recording Signal Chain : Preamps
Even with the best instruments, microphones and recording gear, the quality of your recordings depends greatly on your preamps.
Let's dive in and learn about the differences between hardware and software preamps, as well as how to choose the right preamplifier for your home recording studio.
Why Use a Preamp?
Most audio engineers would assert that a microphone preamp affects the sound quality of a recording just as much as the microphone itself. Treating your signal path to the right preamp is important to attaining the sound your voice-over calls for.
Hardware Preamps
Many mixing boards or desks have microphone preamps built in. There are also a plethora of external preamps from which to choose, which is great for adding the exact tone and feature set you need for your setup.
As an example, the TubePRE is the highest quality vacuum tube preamp in its class. Loaded with PreSonus award winning dual servo preamplifier, the TubePre affordably delivers low noise tube warmth for vocals, guitars, bass guitars, synths and sound modules. The TubePre noticeably outperforms preamps in low cost mixers and recording interfaces making it an easy choice for anyone desiring to enhance their recordings with the magic of tubes.
Software Preamps
Many USB microphones come bundled with preamplifier software that provider additional control and gain adjustment to the signal being recorded. Software preamps are purely digital, therefore do not amplify the voltage of the microphone. The software simulates an increase to the audio signal and therefore doesn't offer nearly the quality or characteristics of a traditional analog microphone preamplifier.
USB microphones will work without the software using the standard drivers included in your computer's operating system. However if you would like added functionality of the preamp software (Input Level Meter, Volume control, High-pass filter and Phase Switch), ensure your computer meets the minimum system requirements of your microphone's manufacturer.
How To Select a Microphone Preamp
As with most pieces of audio equipment, price and performance are the two criteria you should consider when selecting a microphone preamp in your home recording studio.
Microphone preamps come in many shapes and sizes, and vary greatly in price from a few dollars to many thousands of dollars. Many mixing boards or desks have microphone preamps built in.
Summary
Remember that the preamplifier is a critical part of your signal chain and will significantly increase the quality of your audio recordings. If you're looking to add on to your home studio, the preamplifier is a good place to start.
