Thd+N

0.002%, @ 1kHZ into 8Ω

Total Harmonic Distortion + Noise is the percentage of output signal which is made up of frequencies added due to harmonics of the fundamental frequency and noise. By using low-noise input circuitry and Class A signal stages, Perreaux engineers have kept this figure to a minimum.

Frequency Response

20Hz to 20kHz, +0dB -0.25dB

Describes the frequency range where the amplitude or strength of the output signal deviates by no more than 0.25dB.

Signal to Noise Ratio (unweighted)

100dB

The ratio of desired signal to noise signals in the output. Perreaux engineers have designed the SX25 to maintain a low noise floor.

Dynamic Headroom

>2.0dB

This indicates the SX25 can provide more than enough extra power to cope with the sharpest musical transients. Without adequate headroom, an amplifier can become unstable under clipping conditions. Perreaux amplifiers are intrinsically stable under all dynamic conditions.