Building a top audio source system-the acoustic revolution of Japan’s Biwei MM-1 D linear PCM player and STATE A 6 decoder

Japan’s BEWITH car audio system, with its excellent sound quality performance and ultimate craftsmanship level, has already set an insurmountable benchmark in the industry. If you have to look for a “shortcoming” for it, it may be its eye-catching price threshold that completely matches its quality. Among the customer groups we serve, in addition to being shocked and pleasantly surprised by the final acoustic effect, the most common feeling is: “Apart from being expensive, I really can’t fault anything.” This kind of “expensive” is actually the value created by top-level materials, cutting-edge technology and R&D investment regardless of cost.

All kinds of doubts or rumors about Biwei’s sound effects often stem from the failure to personally experience its true strength under a complete and professional modification plan. We must be soberly aware that the profound potential of top-notch “semi-finished” audio equipment such as Biwei is like a racehorse with pure blood, which can only be fully controlled by experienced and skilled “jockeys”. The more high-end the equipment, the stricter the requirements for the acoustic understanding, installation technology and adjustment skills of the modification team. It is by no means a simple connection that can make a good sound.

The core of this in-depth upgrade of Audi Q 7’s sound system is to build a top-level sound source and processing center. We equipped it with Biwei’s flagship playback combination system:MM-1 D High Precision Linear PCM Digital Player(16 bit lossless format is supported), and what works with it isSTATE A 6 professional digital audio processor/decoder。 The investment in these two core equipment alone is worth comparable to that of an entry-level family car. As for the sound experience they can bring-the ultimate resolution, the quiet background, the broad dynamics and the vivid musical expression, only the connoisseur who has truly owned and listened to it can understand its transcendental value.

Core audio source analysis: MM-1 D linear PCM player

The MM-1 D is by no means a car head unit or player in the traditional sense. It is a revolutionary product born for pure high-fidelity music playback. It uses Bivii’s originalML (Music Link) HD audio interface, specially designed to combat the complex and harsh electromagnetic interference environment in the vehicle. In materials science, it selects Germany’s Schott special optical glass and patentedUltra-lightweight magnesium alloy (MAGNEOLA) housing。 This special magnesium alloy material can effectively suppress the interference of external vibration and electromagnetic radiation on internal precision circuits. It completely abandons the “pure electronic” data reading and writing architecture of mechanical transmission components, and fundamentally solves the problems of vibration, reading error and mechanical wear of traditional CD players. For this reason, since its inception, MM-1 D has been recognized by the world’s top car audio enthusiasts and professional media as the new standard of the top car audio source, and its position has become more and more stable after years of market test.

Brain and Soul: STATE A 6 Digital Audio Processor/Decoder

STATE A 6 is the pinnacle upgrade of Betway’s classic STATE series. The A 6 R is a dazzling red glossy version and the A 6 is a calm matte black. The core of this upgrade is that its internal processor and digital-to-analog conversion (D/A) chip have been comprehensively innovated, and its performance has been greatly improved. It provides six-channel high-quality analog signal output, which is perfectly adapted to Biwei’s own full range of broadband speaker systems, and can also drive other top brands of speaker units. In order to ensure the absolute purity of signal transmission, it also uses Biwei’s exclusiveML HD audio interface, can achieve point-to-point lossless direct connection with the MM-1 D player, or link to other high-end devices that support this interface. Its shell is also made of patented magnesium alloy casting, which continuously provides a “quiet barrier” for internal precision circuits against electronic vibration interference.

The ML interface, designed for ultimate transmission, ensures lossless digital docking with Betway players.

System integration real scene

The effect after the player is installed in the car takes into account both beauty and convenience of operation.

The previous generation Biwei eight-channel DSP processor replaced by this upgrade is now on sale, which can be used by other players who pursue the ultimate to continue to exert their residual heat.

Complete system composition and final effect

The entire system modification was successfully completed. Loudspeaker part by BiweiA 50 III mid-tweeter unitWithA 130 III midwoofer unitThe top-level acoustic combination is the lead, and the flagship power amplifier of Aiwei brand provides abundant and accurate drive. The ultra-low frequency part is in charge of a German 0.8-inch subwoofer unit, and a hidden box is tailored for it, which is cleverly arranged in the rear space of the car. While providing deep and solid low-frequency extension, it maintains the cleanliness and practicality of the interior space of the car to the maximum extent.