Much of what Chord has achieved is the result of using innovative, leading
edge technology. For example, we believe that we are unique in using the
technique of ‘dynamic coupling’ of the power supply rails.
Whatever transient demand is presented to the amplifier stages, the positive
and negative rails remain in perfect equilibrium, with each compensating for the
demands made on the other.
This means that power delivery is always balanced and free from ground
loop modulation distortion.
This, combined with enormous reserves of
instantly delivered, precisely controlled power is what makes the SPM 1200E
sound so effortless.
The power supply rails operate nominally at ± 90 volts, well above that which
most amplifiers can accommodate.
This and other advanced techniques enables the ultra high frequency low
ESR power supply to store a great deal more energy far more efficiently.
Clipping is virtually impossible. Furthermore, compared to other amplifiers
of a similar power rating the SPM 1200E weighs in at a mere 18Kg.
Another new technique is used to protect the amplifier against overload,
internal and external short circuits. The output signal path is totally free of
any fuses or sound-degrading resistive components often employed for overload
sensing. The SPM 1200E is designed to surpass the highest European safety and
electromagnetic interference standards.
The amplifier sections are also
highly sophisticated designs that make the most of the best high voltage,
lateral structure MOSFETs available, 16 x 150 watt devices per channel.
Combining the subtlety and musicality of a good valve design with the
punch and accuracy of ‘state of the art’ solid state products.
The result is a ‘sliding bias’ class A/B design with all drive circuitry
operating in class A. At usual listening levels, most of the music will be
reproduced in class A.
Chord’s no-compromise design philosophy means there is no better built
amplifier. Individually hand-crafted, it is constructed to aerospace standards
from the circuit boards up.
2 x 350 W RMS into 8
Ohms 2 x 620 W RMS into 4 Ohms 2 x 750 W RMS into 2 Ohms
4 x gold plated WBT output
2 x XLR balanced inputs 2
x RCA-Phono single ended inputs