4-DAC 18-Bit High Resolution System: Technics set new standards here with four separate D/A converters (two per channel in push-pull configuration). This dramatically reduces zero-crossing distortion and provides unparalleled fine resolution, especially during quiet passages. To ensure reliable functionality, we test the devices with special test CDs. Using the so-called "eye pattern", which is measured with an oscilloscope, we can determine how well the laser reads the information on the CD. We use this data to decide, among other things, whether devices are still suitable for sale. whether the laser unit needs to be replaced. The devices are presentable . There may be a few small blemishes on the front and/or a few small paint scratches (no longer than approx. 5cm) must be present. F.
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