The CS100, developed by the Polish manufacturer MOREaudio, is an integrated amplifier that embodies a passion for music and cutting-edge technology. Its innovative design draws inspiration from the renowned single-ended sound, incorporating unique technical features. The CS100 marks the inaugural offering from MOREaudio.
MOREaudio CS100
Tomasz Dębski and Jan Siwy are the creative minds behind MOREaudio. Currently, the CS100 is the sole product featured on the MOREaudio website, yet the designers emphasize its uniqueness. “In creating this amplifier, my goal was to include everything I desired without compromise. Regardless of the genre of music, the CS100 had to serve as its vibrant core, alive and pulsating. It has achieved this, being subtly present without overshadowing the music, which ultimately remains the focal point—alive and tangible.”
Envision experiencing your favorite music with an unprecedented level of clarity and dynamism. The CS100 introduces a transformative sound experience, enabling you to perceive every detail, subtlety, and concealed emotion within the music. Embrace the enchantment of authentic sound, immerse yourself in a three-dimensional auditory landscape, and allow the breathtaking dynamics to captivate you, as described by Tomasz Dębski on the MOREaudio website.
The CS100 merges the finest elements of audio technology: the elegance and musicality of single-ended design with the strength and accuracy of solid-state amplifiers. Through innovative engineering, the creators assert they have effectively reduced the limitations typically associated with traditional single-ended systems while preserving their distinctive qualities.
CS100 features four two-stage systems, each equipped with local feedback, all designed in a single-ended topology. This uniform architecture across all stages offers notable benefits. Primarily, it guarantees a consistent sound quality throughout the entire signal path, from input to output. Additionally, the distortions produced by the individual amplifier stages share similar characteristics, including a comparable harmonic structure, which makes them less taxing for the listener compared to a mix of distortions from varying sources.
Class AB for greater efficiency
Traditional single-ended amplifiers typically function in class A, a method known for its low efficiency and high power consumption. In the CS100, MOREaudio has innovatively designed the final stage to operate in class AB, utilizing advanced single-ended topology solutions. This approach enhances energy efficiency while maintaining the low distortion characteristics associated with class A.
The output stage of the CS100 employs a blend of positive and negative feedback, which effectively imparts a negative output impedance to the amplifier. While this may sound complex, it essentially means that the amplifier can adapt to the speaker’s behavior, ensuring optimal operating conditions.
It is important to note that speakers are often the most significant source of distortion in the audio chain. The amplifier’s negative output impedance plays a crucial role in reducing these distortions, allowing the speakers to perform at their best and greatly enhancing the overall quality of the audio system.
No global feedback
In the CS100, MOREaudio has intentionally chosen to forgo the global feedback loop, opting instead for local feedback across distinct stages. While feedback is commonly utilized in amplifiers to minimize distortion and enhance specific characteristics, it is not without its disadvantages. A significant issue associated with feedback amplifiers is TIM distortion (Transient Intermodulation Distortion), which arises from delays within the feedback loop. Such distortions adversely affect the dynamics and authenticity of sound, particularly with musically intricate signals.
In CS100, MOREaudio has designed the final stage to operate in class AB, thanks to innovative single-ended topology solutions.
MOREaudio CS100 specifications:
- Input sensitivity: 600 mVpp
- Input impedance: 100 kOhm
- Inputs: 4 x cinch (unbalanced)
- Volume control: 0 dB to -64 dB (1 dB steps)
- Frequency response (-1 dB): 5 Hz to 120 kHz
- THD+N distortion: 0.05%
- Power (RMS): 100 Watts into eight Ohms, 200 Watts into four Ohms
- Output impedance: 0.15 Ohm
- Weight: 15 kilograms
- Dimensions (W x H x D): 340 x 180 x 330 millimeters
- Packaging dimensions (W x H x D): 382 x 252 x 453 millimeters
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