Audio Solution amplifier by Roberto Tognon

Quattro Field Effect Amplifier

One amplifier remains in stock from the first batch of 10 hand built amplifiers.  New inventory is expected around March 2025.
DO NOT DELAY!
We sincerely thank you for considering the ownership of the Quattro, a Ultra high-end amplifier born from a passion for music and designed for discerning listeners who value superior audio quality. Your appreciation for this exceptional piece truly aligns with its intended purpose of elevating the listening experience.
What is the "Quattro" amplifier?
"Quattro" is the result of over 1 year of research and development to build a car amplifier never built before.  Even before that, "Quattro" is the crowning achievement of the career of one of the most competent and passionate people (especially about music) that car audio has ever seen;  Roberto Tognon, who conceived and contributed to the development of this project.

The "Quattro" is an uncompromising project characterized by its high-quality components and top-tier engineering, designed for exceptional performance while maintaining a compact form factor that allows for versatile installation, provided there are considerations for adequate space, ventilation, and safety.

The "Quattro" amp features innovative circuit solutions using carefully selected components sourced from around the globe, contributing to its unparalleled sound quality and performance.

The "Quattro" amp not only boasts exceptional measurement results but has also impressed even the most discerning human listeners with its remarkable audio performance, establishing itself as a top-tier choice for audiophiles.
"Quattro" is absolute tonal correctness, transparency, detail, control, articulation, stage.
In FOUR words, "Quattro" is an "AMPLIFIER BUILT FOR MUSIC".
An amp that certainly marks a milestone in car audio and that aims to give hours and hours of elite music to the lucky ones who can claim to own it!
*Product Overview*
– Lateral MOSFET for audio power stage
– Full stabilized dual power supply
– High current power mosfet for single pair drive
– MUNDORF capacitors for power stage and for audio stage
– Full discrete dual fet metal chase drive stage
– 105um Gold plated PCB
– Polymeric capacitors for all audio stages
– Silver mica capacitors on audio stages
– Composite CNC milled chassis
– High quality gold plated connectors
– MUSES72323 digital potentiometers with LCD display
– Input sensitivity adjustment in 0.25dB steps for the 4 channels
– Master level for set simultaneously all the channels

-Technical specifications-
Output power: @4 ohm 4 x 150W rms
Output power: @2 ohm 4 x 280W rms
Frequency response: @ 1W 4Hz – 150KHz (-3dB)
THD+N: (20Hz – 20KHz @ 1W) < 0.01%
THD+N: (1KHz @ 1W) < 0.003%
S/N ratio: > 115dB
Max input signal voltage: 10.6 Vrms (30Vpp)
Working power supply voltage: 11 - 15.5V
Current draw: (typical @ 4 Ohm) 25A
Current draw: (max @ 4 Ohm) 60A
Idle current: (typical) 3.7A
Input impedance: >20KOhm // 220pF

Display for monitoring:
Voltage IN
Chassis temperature
Master level
Each channel attenuation (0.25db step)
Firmware version
Serial number

Over temperature protection: 85° c (+/- 5%)
Dimensions: Length 450mm / Width 270mm / Height 90mm
Weight: 23.14854 pounds
Working temp: 0-50*c

N.B. The data may vary without notice due to design adjustments or aesthetic changes.

**In order to achieve the best performance of your amplifier and to work in the safest way, it is essential to read the amplifiers manual, which you can refer to, at any time, and in the future.
 
-This amplifier is designed to work only in a 12V DC environment from the automobile's battery/batteries.
-Do not attempt to power it with AC or different voltages!
-Install the device in a solid way that does not affect driver's guidance or allow the device to become airborne at anytime.
-Do not place the device in very hot places (such as the engine compartment).
-Make sure that the installation location is not subjected to high humidity and / or splashes of water.
-Perform solid and safe connections, using only cables of adequate length, gauge and oxygen free copper wiring.
-It is absolutely essential to install a fuse of adequate value near of the battery (aka main power source).
-In the installation / removal and maintenance operations it is absolutely necessary to remove the fuse located near the battery.
-If the device is subjected to severe shocks that could visibly damage the chassis
let it be viewed by the service center or by a certified professional installer.
-Keep the device clean and do not obstruct normal chassis ventilation,
-Do not use aggressive detergents for cleaning.
The maintenance allowed to the user are set sensitivity, display setting and the replacement of the fuse with identical characteristics, (to be performed as described in the "Diagnostics" paragraph).