The JASON uses a high-quality top-loader transport system. A heavy-duty motor driven lid protects the CD and also safely puts the puck onto the CD upon closure. The motor is of the same Swiss brand as NASA is using for their Mars mobiles. The JASON employs a twin metal frame. The inner chassis is made of steel and acts as a very effective shield against electrostatic and electromagnetic radiation. The outer frame is made of massive anodized aluminium for additional shielding, resulting in optimal heat convection and beautiful looks. The four feet have been designed for optimum vibration and shock absorption.
Up-sampling, Word-length Reduction, Jitter Processing
The JASON contains an up-sampler feature which allows the basic 44.1 kHz/16 Bit data stream of the CD to be up-sampled to 88.2 kHz or 176.4 kHz for subsequent D/A conversion. Our own state of the art algorithms for the up-sampling as used by many of our professional studio customers are put to work.
Since the up-sampling process has the effect of generating a word-length longer than 16 Bits, a 40 Bit Floating Point format is used. This is then reduced in its word-length to fit the standard AES/EBU or S/PDIF formats. This word-length reduction uses the POW-R #3 algorithm. POW-R is the de-facto standard in professional audio for word-length reduction. POW-R has been developed by the “POW-R Consortium LLC”, where Weiss Engineering Ltd. is one of the four member companies. The output word-length can be selected between 16, 20 or 24 Bits, which allows the connection of a wide variety of D/A converters to the JASON.
The JASON uses a special method to treat the output signal so that jitter generated in subsequent cables or D/A Converters has less influence on the audio quality. This allows D/A Converters with non-ideal jitter performance to be used with enhanced sonic quality.
The power switch allows to switch on or off the JASON unit. Five switches to control the transport for skip backward, skip forward, stop, play/pause and lid open/close. A high resolution graphical display conveys information on the track number played, playing time, sampling frequency, output word-length.
The remote control has the standard transport controls including a ten key numerical keypad. In addition there are buttons for various kinds of time displays, sampling frequency selection, output word-length selection, absolute phase switching, volume control, display dimming, overall mute control and last but not least a button for switching the “DAC enhancement” mode (via the jitter processing as mentioned above).
Back panel elements from left to right