DSP Amps
Subwoofer Box


In the Marche region, a geographical area world-famous for the production of esteemed musical instruments, Audison started its long history in the pursuit of audio preformance perfection.

Home | Amplifiers | Thesis | Informazioni


state-of-the-art analog and digital technology

TH quattro, TH due and the mono TH uno are the ultimate synthesis between state-of-the-art analog and digital technology.

Thesis amplifiers are born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of digital technology in one unique product.
The precious synergy with Full DA HD technology takes the in-car listening experience to a new level of excellence; the synthesis of a unique know-how employed in mobile audio reproduction.


logo fulldahd black

All models integrate a hi-end digital decoding section that makes them compatible with Audison Full DA HD technology, to better appreciat the higher resolution of Hi-Res audio files.

logo hires

This is combined with native DSP working at 24 bit/96 kHz, extending the audio band up to 40 kHz and earning the coveted High Resolution certification.


A revolutionary function called Dual Power was introduced for the first time in the HV venti. Controlling the amplifier’s output power configuration, this function allowed the predetermination of the amplifiers output power and of the grade of the outputs operational class.

There are four possible presets, which range from the Energy Saving function, allowing musical enjoyment for extended periods of time with the vehicles engine off, to Hi-Current and Hi-AB Class where the power is the priority even for difficult loads, up to A Class, the best choice for musicality.


Thanks to the ACS contained within the TH amplifiers, and to a
connection to a computer through the AC Net (Audison Control Network) software, the functions of all the Thesis amplifiers installed in the system are close at hand. The microprocessor stores the serial number, the hours of operation as well as the critical operational conditions; the software allows the user to customize the amplifier by giving it the owner’s name and by saving the audio system amplifier settings. Sensitivity adjustments, monitoring the working conditions and the possibility to adjust the amplifier power supply and operational class are just a few of the actions made available to the user with the AC Net software. A USB connector enables the connection of the system to a computer,


High-end solution: the simplicity and power of the analog system found in the HV venti is thrust forward again in the TH, making use of the amplifiers versatility.

A separate crossover module is provided with every TH amplifier. Through switches mounted on the module itself, it is possible to create a 12 dB/Oct Butterworth filter in a Hi-Pass, Lo-Pass or Band-Pass configuration. When TH uno or TH due or TH quattro is set up in a mono configuration, the slope of the filter can be set for 24 dB/octave operation.


The power supply is composed of five units. A Flayback power supply is especially dedicated to the low level signal section and operates a Synchro-PWM mode along with four high efficiency power supplies. The function of these power supplies is to provide energy exclusively to the final stage. The aforementioned final stage supplies, controlled by a specialized circuit, work in pairs to provide the positive and negative waveforms. This solution, an Audison tradition, increases the impulsive response speed required by the amplifier.

In Digital Input mode and when connected with the DRC control accessory, the microprocessor converts the D-CAVC into a volume control that can replicate all other low frequency controls (Master Volume, Balance, Fader, Sub Volume).
The input panel of TH amps features AD Link connectors, dedicated to receiving the digital signal from Audison bit sources or processors and relaunch it towards the amplifier chain in Full DA HD configuration, through a shielded Cat.5 cable provided with an RJ45 connector.
The signal from very high quality sources can also be received through the optical S/PDIF input and relaunched digitally with the AD Link system (Audison Digital Link) to other Thesis TH amplifiers. Each amplifier will perform the D/A conversion using a 24-bit 192 kHz PCM Hi End converter.


As with the HV venti, the power stage is obtained through the use of groundbreaking circuitry, starting with the PCB layout. In order to control the strong supply currents of the final stages, the power outputs and the speaker ground return path, the power devices are installed on separate modules which nullify the rise of electromagnetic fields interfering with the signal path.


The layout of the components and the design of the heatsink are reminiscent of the HV venti, and are designed in order to dissipate the heat generated by the amplifier, especially when used in A Class mode. The chassis is extruded from solid aluminium and is then CNC (numerical control machines) machined to exacting standards. A black anodized finish is employed to improve the heat exchange through the physical phenomenon of convection and radiation. The characteristic layout of the circuitry and power modules, assembled vertically and external to the mother board, offers the huge advantage of PCB circuits with extremely revolutionary dimensions to make the most of the signal path, aiding the amplifier power and sound quality.

Subscribe to Audison