Lindemann 822 sacd player

 excellent Conditon full working order

The 822’s digital to analog converter is based on our own HiDRA® (High Definition Resampling Architecture) technology, which previously appeared in models CD1SE and D680. Now HiDRA® has been further developed and refined for the 822. At the heart of this innovative technology are a sample rate converter (SRC) with origins in the professional recording studio, today’s state-of-the-art DAC’s and a high-precision master clock. The SRC upsamples the CD signal to 176.4 kHz, 24-bit to improve soundstaging, low-level detail and the purity of high frequencies. The converter (PCM 1792) then raises the sample rate further to 1.411 MHz - equivalent to a bitrate of 5.64 MHz for the subsequent sigma-delta multi-bit DAC. Unlike the PCM signal, the DSD signal is not converted. Since it already has a bit-rate of 2.82 MHz after decoding, it is simply filtered by the DAC.

At the heart of the design is the master clock, which features fully discrete construction and is powered by a dedicated feed from the outboard power supply. Its close proximity to the converter circuits ensures ultra-fast re-clocking and thus a highly precise data stream.

To ensure the best possible synchronicity of the digital audio data, all required clock frequencies in the signal processing chain are derived from this master clock – from the generation of audio PCM and DSD data on the servo board right through to the converters themselves. This provides a closed loop which, together with the HiDRA® architecture, virtually eliminates timing jitter in the D/A conversion process and preserves the precise timing of the digital audio signal. The result is a sound picture of unequalled transparency and tonal accuracy from both CD and SACD.
 he 822’s entire signal path is fully balanced. The D/A converters (operated in mono-mode) produce a double differential analog signal, which is routed to a phase linear filter to remove unwanted high frequency noise. The subsequent analog volume control and output stages are also fully balanced.