CLASSIC 250M mono power amplifiers

The new CLASSIC 250M is a monophonic system with a technological development that will leave you breathless.

 

With a sleek and modern design, they are not only a feast for the eyes, but they also provide an extraordinary sound experience. With great power and precision, you will immerse yourself in a world of crystal clear sound with an extended dynamic range that will enhance every note and every detail of your favorite music.

 

In a compact frame, thanks to modern electronic technologies, there is room for a power amplifier capable of delivering over 1Kw on a 2 ohm load and capable of whipping even the most demanding speakers on the world scene to the limit.

 Get ready to experience unique emotions with this unforgettable sound system

The heart of our performance: the power stage

the true heart of every amplifier, especially for our amplifiers, is for us a matter of extreme care and detail of fundamental importance, resources and commitment.

CLASSIC 250M is equipped with a low induction transformer that powers the rectifier circuits mounted on a single PCB without flying wiring, thus allowing a connection without contact resistance.

This design shortens the electrical path from the transformer to the final output stages, reducing overall impedance and allowing the circuit to respond faster, controlling the speakers better and more accurately.

The technology in our transformers

DIMENSIONS and WEIGHT : it is an almost certain fact to ensure good performance, however these two measures if considered as ends in themselves do not guarantee the final result. It is a set of additional factors that determine the difference between a good transformer and an excellent transformer.

We cannot tell you point by point how we build our transformers as we are subject to a factory veto but we can describe the main requirements to understand the efforts made in 20 years of research, study and evolution of materials that we use on a large scale.

Such as extremely low induction, toroidal cores made of iron and magnesium powder, innovative winding and interlacing technique of the coils and last but not least, a copper magnetic shielding on the whole body.

You will not hear a more stable and silent transformer than ours!

Balanced input stage, our philosophy

the most delicate and fundamental part, which must be treated with extreme care, because it is also this stage that as a whole determines the general performance of the reproduction

This delicate task is entrusted to our proprietary HDCA modules now in their third version. Today even more refined, clear and transparent.

we assemble them with components selected for their linearity and bandwidth characteristics. The circuit operates in open loop and the feedback is so low that it becomes practically negligible.

The circuit operates in pure class A and uses no decoupling capacitors throughout the various signal processing stages.

The power stage

revolves around a cascode circuit design. This proven configuration allows for a wide and extended bandwidth and the power amplifiers are driven by a Darlington-type configuration.

6 pairs per channel of latest generation bipolar transistors ensure reliability and stability in any condition of use, load and current demand.

A new integration of the circuits with SMD components allows for shorter signal paths, greater rejection of noise and a significant reduction in “microphonics” due to vibrations.

The power transformer, in addition to being shielded, is mounted under an iron cover that further increases its rejection of disturbances. The entire filtering bank and rectifier diodes are mounted on a PCB with 70 micron copper without air wiring.

This decreases contact resistance providing a higher current input and faster transfer rate increasing the damping factor and control over the speakers.

Mono amplifier operating in class A up to 5 Watts

• RMS power per channel @ 1Khz, both channels driven -

300W @ 8 ohms

550W @ 4 ohms

900W @ 2 ohms

•EIA power per channel from 20 Hz to 20 Khz, both channelsdriven -

480W @ 8 ohms

700W @ 4 ohms

1300W @ 2 ohms

• Input impedance: 47 Kohm via XLR, 22 Kohm via RCA

• Slew/rate - 30V/uS

• Damping Factor - >200 into 8 ohms at 50hz / 150 Hz / 500 Hz

• Sensitivity - 2.4 Vrms for full power @ 8 ohms

• Frequency response - 10hz – 80Khz +/- 2db

• THD vs FR - 0.003% @ 1Khz for 200 Wrms @ 8 ohms

• Input CMRR - > 80dB

• A-weighted SNR - >115 db

• Dimensions - 33 x 38 x 22 cm. (L x D x H)

• Weight - 20 kg

USER MANUAL