Mirror Station® AZ-2

    Built-in D/A converter with top-level processor inherits the true value of AZ-1

    Aiming for the highest summit of all car-installed D/A converters, the AZ-2 is a built-in D/A converter with top-level processor that faithfully inherits the true value in sound quality and technology of Bewith’s AZ-1 flagship model. The ultimate in D/A conversion precision and the outstanding tuning capability typified by the cutoff slope of -300dB/oct. give rise to super high-fidelity playback and will continue to enchant the ears of audiophiles who yearn for the "real thing."

    • Digital Processor DA ConverterMirror Station AZ-2


    Mirror Station  AZ-2 [ Digital Processor DA Converter ]

    Digital Processor DA Converter

    Mirror Station® AZ-2

    End of sales

    DSP/Pre Amplifier Equalizer Select 15 points from 59 points / Adjustable at -0.1dB steps (-12dB maximum)
    Left / Right Independent Cut off slope -12 – -300dB/oct. Level adjustment at -0.1dB steps
    Cut off Frequency Select from 54 points
    Time Alignment Adjustable at 0.77cm (0.02ms) steps between 0.00cm (0.00ms) – 499.73cm (14.70ms)
    Frequency responce 10Hz – 20kHz (±0.5dB)
    Maximum output voltage / Inpedance 4.72Vrms/10KΩ
    Total harmonic distortion 0.0015% (1kHz, 20kHz, L.P.F)
    Input / Output Terminals Audio Input 3 digital inputs (2 opticals, 1 coaxial)
    2 analog Inputs (RCA line, Stereo minijack plug)
    Audio Output 3way 6ch RCA Line outputs (TW, MW, SW)
    Video input 1 composite video input
    Video output 1 composite video output
    Signal to noise ratio 115dB (IHF-A network)
    Separation 106dB
    Maximum current consumption 2.4A (14.4V_DC)
    Power source DC14.4V (11.0V – 16.0V allowable)
    Dark current < 5mA (ACC OFF or POWER OFF)
    Fuse 7A
    Size 262×400×58mm
    Weight 4.45kg
    Accessory Remote Control / Remote Eye


    The D/A converter unit faithfully inherits the true value of the AZ-1 in both sound quality and technology.

    All component parts have been scrupulously selected. At the highest summit of car-installed equipment, the 192kHz/24-bit high-performance DAC device from Cirrus Logic has an exclusive tweeter, midwoofer and subwoofer for a total of three boards, and a National Semiconductor pro-audio op-amp is installed on each channel (six in total) in an analog buffer circuit at the low-pass filter or after. And at the final stage, an Elna coupling condenser designed exclusively for the AZ-2 is adopted. The AZ-2 faithfully inherits the sound quality and technical true value of the AZ-1 flagship while capturing the supreme value in music expression.

    192kHz upsampling that eliminates jitter in the DSP

    During our pursuit of sound quality to the extreme limit in the D/A converter unit, we discovered the impact of fine jitter generated within the DSP on sound quality. In the AZ-1, jitter within the DSP is eliminated by upsampling the audio data input from the DSP to the D/A converter at up to 192kHz and running the device asynchronously. The blind spots of the digital multisystem are resolved by the TI sampling rate converters in the dedicated tweeter, midwoofer, and woofer. Sound quality degradation is kept to a minimum through upsampling at frequencies up to 192kHz by using a highest echelon Cirrus Logic device on the external analog input signals.

    4-layer board with internal layer foil thickness of 70μm with special attention paid to isometric length and identical patterns.

    In this design, the printed wire pattern of the analog audio circuit from the D/A converter output to the audio output terminal has completely isometric L/R length and the circuits for the tweeter, midwoofer, and subwoofer regions have completely identical patterns. The board lowers impedance to the extreme limit through a four-layer structure with an internal layer foil thickness of 70μm and a surface layer thickness of 35μm, and more specifically by use of 70μm wiring for the audio circuits and audio power circuits and by making all corners R-shaped. Through an exquisite design clearly delineated from mixed analog/digital systems, we have achieved high purity sound quality and an overwhelming sense of a high signal-to-noise ratio.

    Audio system of high efficiency power circuits in a full-discrete layout.

    The audio system is equipped with high-efficiency, low energy consumption power circuits that maintain a complete separation between the audio and the video/control circuits. In particular, the audio system power has a fully discrete layout equipped with an independent, stable power supply employing audio regulator circuit technology, and circuit impedance is lowered to the extreme by inclusion of special acoustic parts. In addition to the focus on high efficiency and low current consumption, we have kept radiation and heat, which threaten sound quality, to a minimum.

    Digital processor unit employing an FIR filter with no phase rotation.

    Adopting an FIR filter in which phase rotation from filtering does not generally occur, the AZ-1 is equipped with an L/R, independent, 3-way digital processor that achieves ideal signal processing with no impact on sound quality and orientation even during crossover network and equalizer use. The equalizer has a cutoff slope of –12 to –300dB/oct. (–0.1dB per step), a time alignment of 0.77cm (0.02ms) steps, and a bit lossless negative control with 59-point selection (–0.1dB per step). Based on the outstanding tuning ability that typifies the equalizer and tuning operation* that employs Bewith’s unique SIEG® in-vehicle acoustic measurement system, the AZ-1 boasts sound tuning previously not possible at a precision that approaches its theoretical value.

    * Installation and tuning of this equipment is handled by exclusive sales outlets for Bewith products (SIEG® equipment vendors). Sound tuning requires special equipment for measuring in-vehicle acoustics (SIEG®) and special software, and cannot be done by the customer. Also, labor and other costs for installation and tuning are not included in the indicated product price.

    Mirror Station  AZ-2

    L/R are completely isometric in 4-layer boards with a substrate thickness of 70μ

    High efficiency, low current consumption power circuits

    L/R independent 3-way digital processor

    Sample tuning window using special software.

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