SPL Phonitor One is a headphone amplifier for audiophiles featuring two Burr-Brown OPA 2134 SoundPlus™ operational amplifiers that provide preamplification. These are specially designed for audiophile circuits and are characterized by extremely low noise and minimal distortion of just 0.00008%.

Due to the use of a real FET stage, the OPA 2134 has a slew rate of 20 V/µs, making it a high-speed operational amplifier. This has a direct positive effect on the liveliness of the reproduction.

Two stereo analog inputs can be connected to the Phonitor One. You can connect signal sources such as DA converters, CD players, mixers, synthesizers, or analog tape players / tape decks to the analog line input, which can be balanced (TRS connector) or unbalanced (RCA).

If you want to connect directly to a computer, tablet, or phone, use the USB input and the most advanced 32-bit DA converter to verify Phonitor One d.

The headphone amplifier's output stage is designed as a push-pull amplifier in Class AB mode. The bipolar transistors share positive half-wave and negative half-wave amplification, so they have higher gain and output voltage than Class A operations, which have only one transistor that can simultaneously amplify half-wave and headphone amplifiers.

Phonitor Matrix has an adjustable crossfeed function, so you can create a headphone mix so that it sounds the same as the speakers.