Active speakers from PSI Audio deliver the most precise audio performance. The loudspeakers achieve this feat by using proprietary technology developed and perfected by PSI Audio. One such technology is the Class G/H amplifier design that drives the powerful speakers from the manufacture in Switzerland. Power levels may vary from model to model, the exceptional efficiency and ultra-low distortion remain a constant across the whole range. Combined with other PSI Audio technologies, the Class G/H amplifiers allow for perfect sonic reproduction.

The contents of this press release

PSI Audio employs Class G/H amplifiers

The perfect amplifier: Class G/H

Variable power supply to maximize efficiency

Meticulously designed for outstanding sound

Class G/H amplification in PSI Audio speakers

Yverdon-les-Bains, 27th February 2019 – When designing their speakers, the accomplished engineers at PSI Audio accept only the best components in their quest for the most accurate sonic reproduction. Every model from the range of active speakers uses impeccable analogue circuits to achieve the best possible audio performance. With outstanding technologies like Adaptive Output Impedance and Compensated Phase Response, comparatively little attention is drawn to the amplifiers. But the excellent sonic performance PSI Audio monitors are known for would not be possible without the power of the Class G/H amplifiers employed.

The perfect amplifier: Class G/H

When it comes to amplifiers, most people know about Class A, Class B, Class AB and Class D. Few people have heard about Class G or Class H amplifiers, though, since only a couple of manufacturers use Class G/H designs in their products. Based on Class AB, Class G/H amplifiers offer reduced power consumption and lower distortion with no sonic downsides. Combined with proprietary PSI Audio developments like Adaptive Output Impedance (AOI) and Compensated Phase Response (CPR), the Class G/H amplifier designs ensure the most precise listening experience for studio professionals and music lovers alike.

Variable power supply to maximize efficiency

Compared to traditional amplifier designs like Class A or Class AB, PSI Audio Class G/H amplifiers are structurally very complex. Basically, Class G/H uses variable power supply to optimize energy consumption without affecting the sound. The amp switches seamlessly between multiple rails of different voltages, only using the higher voltages when the incoming material actually requires the power. Sophisticated circuitry makes sure the switching between the rails remains unnoticeable, keeping performance high and distortion low.

Meticulously designed for outstanding sound

If Class G/H designs are so much superior to other amplifier layouts, then why are not all manufacturers using them? The answer is simple: Class G/H amplifier designs require very precise circuit optimization in order to provide optimal performance. PSI Audio is used to creating ultra-precise analogue circuitry – no PSI Audio speaker contains any form of digital aid. With all this know-how and experience in building pitch-perfect analogue designs, using Class G/H amplifiers just seems to be the logical consequence. Completely designed and built in the company’s own manufacture in Yverdon-les-Bains, Switzerland, PSI Audio speakers are the most precise listening instrument available – down to the amplifier designs.

Class G/H amplification in PSI Audio speakers

The Class G/H amplifier designs complement the overall Swiss precision approach of PSI Audio loudspeakers. All larger models and subwoofers from the compact A21-M to the floorstanding mastering grade A215-M are driven by Class G/H amps to provide the most accurate sonic image.

About PSI Audio

For over 40 years, Swiss company Relec SA manufactures high-quality systems for professional audio reproduction. The company’s brand PSI Audio is firmly established in the field of studio speakers. The brand’s philosophy: 100 percent analogue circuitry without DSP, top quality through manufacturing in the company’s own facilities – and absolutely accurate reproduction. PSI Audio speakers play exactly what is present in the music, not adding anything to it or leaving anything out. With its active bass trap AVAA C20, PSI Audio also revolutionizes room acoustics.

www.psiaudio.com