ical current-to-voltage conversion stage with dedi- cated operational amplifiers possessing superlative rise time and bandwidth characteristics. Following this, an active analog filter circuit, implemented in a differential amplifier, sums both halves of the balanced signal and provides superb common mode noise rejection in addition to outstanding filtering.

This approach to the DAC circuit block yields extraordinarily low distortion and noise levels and contributes greatly to the natural sound of the Nº390S.

Balanced Analog Volume Control

Rather than use the digital attenuator on board the DAC, the Nº390S incorporates a fully balanced analog volume control similar to that found in Mark Levinson preamplifiers. When acti- vated, the output of the Nº390S can be attenuated in precise 0.1dB steps through most of the range. Significantly, the Nº390S maintains the full performance of its remarkable DACs at all volume levels — something impossible with digital volume controls, regardless of what tech- niques may be employed to mask the sonic consequences of that design approach.

State-of-the-Art Output Buffer

The balanced discrete output buffer circuitry used in the Nº390S employs the same topology used in the remarkable Mark Levinson Nº32 Reference Preamplifier. A hallmark of Mark Levinson pream- plifier and digital processor design, this circuit has proven to be both sonically transparent and exceptionally immune to adverse interactions with interconnecting cables and unusual input impedance characteristics of power amplifiers or preamplifiers. The Nº390S features an ultra- compact implementation of the Mark Levinson output buffer circuit, pushing noise coupling and parasitic effects to vanishingly small levels. This exceptionally robust output stage allows the Nº390S to make the most of any combination of preamplifier, power amplifier, and cables used.

Sound Quality

The Nº390S successfully builds on the strengths of the popular Nº39 CD Processor. The name change is intended to convey the level of sonic improvement that can be expected. It doesn’t sound like an improved Nº39 – it sounds like a completely new and significantly better product. The many design refinements in the Nº390S have resulted in a significant reduction in the already very low noise levels present in the Nº39. Low- level musical details that were previously masked are now revealed. High-frequency clarity and extension are improved. Low-frequency detail and drive is improved. Imaging and spatial infor- mation are substantially improved, with a greater sense of depth and width, providing an almost holographic quality to the presentation.

All of this musical information was always present on the CDs. Once again, significant sonic improvements were attained by better implemen- tation of an existing technology. The Nº390S acheives that goal.

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Mark Levinson N390S manual Balanced Analog Volume Control, State-of-the-Art Output Buffer, Sound Quality
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N390S specifications

The Mark Levinson N390S is a high-performance digital to analog converter (DAC) and audio processor that exemplifies the brand's commitment to superior sound quality and advanced technology. Renowned for its exceptional build quality and cutting-edge engineering, the N390S stands out as a centerpiece in high-end audio systems.

At the heart of the N390S is its state-of-the-art DAC architecture. It employs advanced multibit Delta-Sigma architecture, which ensures a precise and accurate conversion of digital audio signals into analog. This results in an incredibly clean and detailed sound signature, allowing users to experience their music as it was intended by the artist. The N390S supports high-resolution audio formats, making it compatible with a wide range of digital sources, including CDs, streaming devices, and high-resolution audio files.

One of the remarkable features of the N390S is its comprehensive connectivity options. It includes multiple digital inputs, such as optical, coaxial, and AES/EBU, as well as USB input for connecting modern computers and media servers. This versatility ensures that users can easily integrate the N390S into their existing audio systems, regardless of the source devices they use.

The N390S is equipped with a sophisticated digital signal processor (DSP) that provides advanced processing capabilities. It includes features like digital filtering and upsampling, which enhance the audio quality by improving the timing and precision of the sound. Users can customize the sound to their liking, providing a tailored listening experience that can adapt to different musical styles and preferences.

In terms of build quality, the N390S features a robust chassis designed to minimize vibrations and external interferences, further preserving audio integrity. The premium components used in its construction lend to its durability and long-lasting performance.

Finally, the user-friendly interface of the N390S, combined with its high-resolution display, makes navigation simple and intuitive. Overall, the Mark Levinson N390S is a remarkable piece of audio technology that delivers exemplary sound quality, luxurious design, and impressive flexibility, making it an ideal choice for audiophiles seeking the ultimate listening experience.
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