SPL Audio Channel One

For audio professionals and enthusiasts who demand uncompromising clarity and precision in their recordings, the SPL Audio Channel One microphone preamplifier offers a level of performance that transforms every sound source into an impeccably detailed and transparent audio signal. Whether you are tracking vocals, instruments, or complex soundscapes, this preamplifier delivers the pristine, low-noise amplification necessary to capture the true essence of your audio without coloration or distortion.

Many preamplifiers on the market introduce unwanted noise, distortion, or frequency limitations that can degrade the quality of recordings. The SPL Audio Channel One addresses these challenges head-on with its exceptionally low total harmonic distortion and noise floor, ensuring that the integrity of your audio is preserved from input to output. This means that subtle nuances in your performance are maintained, providing a more lifelike and immersive listening experience for your audience.

At the heart of the Channel One’s performance is its microphone input stage, which provides a maximum input gain of 14.5 dBu and an input impedance of 10 kΩ. This allows it to accommodate a wide range of microphones while maintaining optimal signal strength and tonal balance. The frequency response extends from 20 Hz to an astonishing 200 kHz, far beyond the range of human hearing, ensuring that even the finest harmonic overtones and transient details are faithfully reproduced. With a total harmonic distortion plus noise (THD+N) of just 0.003% and an equivalent input noise (EIN) of -128 dBu, the Channel One delivers a crystal-clear signal with virtually negligible background noise, empowering you to capture every subtle detail without compromise.

Instrument inputs also benefit from high-performance specifications, with a maximum gain of 24 dBu and an input impedance of 1.1 MΩ, making it ideal for guitars, basses, and other high-impedance sources. The extended frequency range of 20 Hz to 200 kHz and an impressively low THD+N of 0.005% ensure that your instrument’s natural tone and dynamics are preserved, enhancing the expressiveness of your playing. Balanced inputs offer a 20 kΩ impedance, while unbalanced inputs provide 10 kΩ, delivering versatility for a variety of connection types and studio setups.

The Channel One is engineered with a robust internal power supply providing ±17 V for analog audio and +5 V and +3.3 V for digital circuits, alongside 48 V phantom power to support condenser microphones. This ensures stable and consistent performance across all operating conditions. The external AC/DC switching adapter supports global voltages from 100 to 240 V AC, making it suitable for studios worldwide. Its compact design and efficient 16.8 W power consumption make it an ideal addition to any professional or home studio environment without excessive heat or noise generation.

Whether you are recording in a professional studio, a broadcast environment, or a high-end home setup, the SPL Audio Channel One offers the precision and reliability needed to elevate your sound to professional standards. Its combination of ultra-low noise, broad frequency response, and flexible input options makes it the perfect solution for engineers and musicians who refuse to settle for anything less than sonic perfection.

Investing in the SPL Audio Channel One means choosing a microphone preamplifier that not only amplifies your signal but enhances your creative potential. With its exceptional technical performance and robust build quality, this preamplifier is designed to inspire confidence and deliver consistent, transparent audio results session after session. Elevate your recordings with the Channel One and experience the difference that true high-fidelity amplification can make in your audio production workflow.