QIARTORIGO OPUS II – aukščiausios klasės automobilis garso stiprintuvas
Opus is wrought from a single block of aluminium
Opus is CNC from a single block of aluminium
Attention to detail means appearence matters too. Like a sculpture, Opus is created from a single block of matter, carved for hours through an extremely complex and expensive process. This isn’t however a merely an eye-catching solution; chassis has been indeed in-house engineered and designed to provide the very best heat dissipation rate related to the size, allowing to push the final stage to performances which are unthinkable with other solutions.
As music lovers, what really matter is under the hood: endelss weeks have been spent in testing the behaviours and interactions between several sets of components. Opus is, on any point of view, the extremization of our firm convinction that beside electrical values and specs, any capacitor, or transistors, or mosfet, or even power transformer ferrite core, is different one from another from a different brand. Combining the right things testing all the interactions among any component inside the PCB is indeed the most stressing, time-taking, yet rewarding task on our engineer’s skilled hands.
The result is a true thoroughbred duo for music lovers par excellence: Opus I for its detail given by a Class A polarization, Opus II for its balance and control on any load. Their sound will move you at a point you will not want to stop to listen to music. Rest assured a shiver along your back will accompany all your listenings.
Made of two, completely separated, mono amplifiers, laid down inside a unique chassis. The concept is very easy: keep everything as simple as possible in order to preserve the sound signal going through the device.
Power supply
The power supply and amplification stages are buffered with multiple and large capacitors. Only carefully selected components, a very precise component location combined with large and short signal tracks are part of the secret of these powerful amplifiers.
Straight and wireless PCB
Straight circuital configuration, sound signal path completely wireless (wires used only for protection LED module), allows to reach timbre performance and spatial reconstruction of the played musical event, suitable to the class of the device.
Gold plated brass connectors
Speakers and power connectors, including the remote, are a result of tooling of brass blocks which go throught a 24K gold plating process to improve the electric conducivity on wires contact point.
3 protections
The Thermal protection prevents the amplifier from exceeding 95°C, in case of over-heating normal operations may continue only after a temperature decrease of 10°C. The Speaker protection is enabled when a mosfet fails and the Overload protection prevents from a wrong impedance load connected on the output.
Power Supply 10-14.4 Vcc
Standby current > 2 A
Input sensivity 0.4-8 V
Input Impedance 48 KΩ
Output Power Stereo 4Ω 220 W x 2
Output Power Stereo 2Ω 400 W x 2
Output Power Mono 4Ω 760 W x 1
Output Power Mono 2Ω 1350 W x 1
Frequency Response 8Hz – 50.000Hz
Signal / Noise Ratio >100dB
Dimensions 433 x 238 x 54 mm
Weight 7.7 Kg
