• The gateway to a new digital sound world

     

    Many music fans distrust fully digital music playback systems - and in many cases certainly not without reason. The reason, however, does not lie in the possible inferiority of digital formats and technologies compared to analog formats, but in the fact that the digitalization of music in its beginnings (CD) was not designed for optimal sound, but for cost savings and data efficiency as well as easier usability (MP3 Etc.). The Waversa Wamp 2.5 along with the entire Waversa product line will revolutionize digital audio history worldwide, because the Wamp 2.5 solves a number of previously apparently unsolvable problems that cannot be solved even with analog playback.

     

    Waversa Audio Processor and Tube Harmonic Algorithm

     

    Waversa understood that digital music largely ignores harmonics due to the limitation of its resolution compared to real music. The Waversa Audio Processor (WAP) provides a remedy: it is an FPGA-based audio processor that interpolates the digital signal in order to approximate it to an analog signal, then a tube harmonic algorithm reconstructs the 2nd, 4th and 8th harmonics of real music that were lost during digital recording or digitization of master recordings. This is how digital music sounds poignantly real, spatially diversified and natural -- characteristics Class A amplifiers are known for.

     

    Wamp 2.5 - the new digital

     

    As a result, the Waversa Wamp 2.5 simply opens a new  digital world. The detailed resolution of the sound image is as fine and detailed as if you were looking into the atomic spaces of music with an electron microscope. And this high resolution is by no means an artificial "act" on the part of the amplifier: it just sounds incredibly natural. The height of the sound stage extends through the ceiling and is extremely pure and clean down to the deepest depths. The Wamp 2.5 reproduces music precisely and finely, regardless of the volume, without loss of resolution. The music plays full and rich on a huge sound stage - even at midnight at a very low volume. 

     

    So, how is Waversa AMP 2.5 different from existing amplifiers?

     

    1. The analog signal is converted to a digital signal PCM (24 bit, 176.4 kHz) by AD conversion. It is the starting point of all digital processing and the most significant difference from the existing Class D amplifier that converts the analog signal directly into PWM. to be.  The Waversa Audio Processor converts the analog signal to PCM, up-sampling from 16 bits to 24 bits and 44.1 kHz to 176.4 kHz appears to be a stepping stone to maximize resolution before further processing (@705.6 kHz or 768 kHz if 48 kHz source or multiple thereof). The frequency response characteristic of W AMP2.5 is 0 to 160 kHz wideband, which seems to be due to the initial upsampling.

     

    2. Uniformly align the time axis of the PCM through the WAP chip: The Triangular Wave Generator used to make PWM has an inherent limitation since the PWM does not have a clock on its own.  The WAP chip uniformly aligns the time interval of the PCM with a high-precision clock in advance then converts to PWM. The PWM signal is then passed through the Class D amplification process to the final analog output stage.

     

    3. Improve linearity and resolution through WAP chip: According to Waversa, it secures linear response characteristics and increases resolution extremely through mathematical calculation.  These algorithms perform in real time on WAP chips. The mid-range boost problem, which is the biggest drawback of analog amplifiers, has been solved through the WAP chip. The harmonic characteristics created by the WAP chip presents a Class A sound.

     

    4. Various digital corrections are also made on the WAP chip to improve detail and imaging regardless of volume, which are a unique advantage of digital amplifiers. There are three major digital corrections that Waversa has proposed:

     

    A. WS (Waversa Ultra Sound) mode: It is said that the resolution, sound stage, and air sensation can be made differently using the unique signal processing algorithm of the WAP chip, but the user can select three modes.

     

    B. AC (Ambient Control) mode: After detecting ground noise and vibration inside and outside the amplifier through a sensor, the concept is that the WAP chip generates and cancels the same value of noise in real time through digital calculation. There are five levels of mode, from 'NO', which accepts noise as it is, to 'MAX', which completely eliminates noise.

     

    C: A tube harmonic algorithm reconstructs the 2nd, 4th and 8th harmonics of real music that were lost during digital recording or digitization of master recordings. This is how digital music sounds poignantly real, spatially diversified and natural.

     

    5. Reduced output amplification and subsequently amplification error by one-fourth through four parallel balanced transformerless (PBTL): Class D 600W output at 4 ohms by adopting a parallel structure of normal, reversed, normal, and reversed phase, which is twice the normal BTL. The dual-mono design with the left and right channels completely separated is allowed using this BTL structure. If you look at the inside picture, you can see that the toroidal transformer and the SMPS power source are also covered with duralumin blocks, respectively, and are installed in pairs of 2 for each channel.

     

     * PBTL = Para Bridge-Tied Load. PBTL comprises several small output amplifiers that are combined to form one amplifier. Configured in this way, it has an extremely low impedance and can even drive loudspeakers with low efficiency.

    Wamp 2.5 mkii class D digital integrated amplifier

    $7,165.00Price
    • Technical specifications

      • Integrated digital amplifier in double mono design

      • Class-D amplifier with PBTL *

      • High-precision 32 bit / 384 kHz A / D converter

      • WAP (Waversa Audio Processor) Type 2 with built-in 768 kHz high-end upsampler

      • 2 fully balanced and 3 unbalanced analog inputs 

      • 1 digital coaxial input (44.1kHz to 192kHz)

      • 8-stage LED brightness control

      • Power: 600W per channel

      • Dimensions (W x D x H): 440 x 330 x 145mm

      • 180~240 VAC @ 50Hz/60Hz

      • 90~120 VAC @ 60Hz (Internal Switch)

      • Weight: 13kg

       

       * PBTL = Para Bridge-Tied Load. PBTL comprises several small output amplifiers that are combined to form one amplifier. Configured in this way, it has an extremely low impedance and can even drive loudspeakers with low efficiency.

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