Meridian Audio 808I manual Signature Reference CD Player, Digital Signal Processing

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INTRODUCTION

The 808 Signature Reference

CD Player

The 808 Signature Reference CD Player takes Compact Disc playback to an entirely new level, with a heritage that includes the multiple award winning 508 and 800, and two dozen optical disc players from 1984 to the present day. The 808 is specifically designed as a CD-optimised machine, able to play virtually any CD, from conventional pressings to CD-R, CD-R/W, and discs of MP3 files (64–256kbps). It also plays the CD layer of an SACD disc.

At the heart of the 808 are fully-integrated electronics and a computer- style CD/DVD-ROM drive. The drive normally operates at standard CD speed, but is capable of much faster reading, using multiple high-speed re-reads to ensure accurate recovery of data from even the most difficult disc. This capability alone provides over ten times the error correction of a conventional CD player.

Digital Signal Processing

Once the digital data stream has been recovered from the disc, powerful on-board digital signal processing (DSP) with a capability of an impressive 150 MIPS (million instructions per second) up-samples the digital information from the 16-bit, 44.1kHz signal of conventional CD to a 24-bit signal with a sample rate of 176.4kHz. This signal is fed to the latest DVD- Audio quality delta-sigma digital to analogue converters to drive the analogue outputs, while a digital signal at an 88.2kHz sample rate is supplied to the digital outputs. Upsampling in this way enables filtering to take place far beyond the range of human hearing, as well as offering other audible benefits, right across the audio band, for ultimate transparency from a CD source.

The 808 employs a triple buffering system to minimise jitter, and therefore maximise HF transparency and stereo image precision and stability. This, and the digital electronics as a whole, are driven by a new design of high- stability clocking system which further reduces jitter and ensures that the highest level of detail is recovered from a disc. All digital data is accurately re-clocked.

Multiple power supplies ensure that digital and analogue circuitry are kept apart and can provide the required power when called upon to do so.

Integrated preamplifier

The 808i version of the 808 Signature Reference CD Player includes a built- in stereo preamplifier with the ability to handle six stereo analogue inputs, three digital coaxial S/PDIF inputs, and two Toslink optical digital inputs, making it ideal as the heart of a superb stereo system.

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Contents Page Meridian 808/808i Signature Reference CD Player User Guide Radio interference Important safety instructionsSafety warnings To avoid interferenceContents Copyright and acknowledgements Sales and service in the UK Sales and service in the USAIntroduction 808 Signature Reference CD Player Digital Signal ProcessingIntegrated preamplifier MP3 audio CDs System integrationSpecification Using the 808 Signature Reference CD Player 2EPEAT Front panel keysPEN MSR+ keysTo insert a disc Switching on and offTo switch on from standby To switch to standbyTrack Playing a discPlay 0012To pause playback Stopping and pausing playTo continue after pausing To stop playbackRepeat A-B RepeatRepeat track Repeat disc Repeat album Repeat a1237 Scanning a discTo scan through a disc Store Programming a selectionClear To clear a programme To add or remove a track from a selectionTo display the phase setting Changing the absolute phase+ Phase PhaseTo change the contrast or brightness Changing the front-panel displayCD Contrast 6857 44k1 16Bit Lpcm CDUsing the CD player preamplifier features Radio65 Selecting a sourceTo select a source CD65 Adjusting the system volumeMute CD Balance Changing the balanceTo change the balance Installing the CD player Back panel UnpackingAudio inputs 808i only To enable or disable the AUX outputAUX always available 192k direct to DAC Audio outputsTo connect to an analogue preamplifier Type 1 or ApplicationsTo connect to two-channel DSP loudspeakers Type 1 or To connect the 808/808i to a power amplifier Type 0 or Auto Controller Not Con Installingprefacethe CD Player Configuring the CD player To select a standard setting Choosing a standard settingType Typing, please wait Radio 2.0V Setting up sourcesGain On Gain OffNot Analogue Configuring CD Player Glossary Type ControllerMenus SourceIndex

808, 808I specifications

Meridian Audio, a renowned name in high-performance audio equipment, has made significant strides in the realm of digital playback with its model 808 and 808i. These models are celebrated for their cutting-edge technology and pristine sound quality, appealing to the most discerning audiophiles.

The Meridian 808 is a compact disc player that embodies the company's dedication to excellence in audio reproduction. One of its standout features is Meridian’s proprietary upsampling technology. This innovation enhances the digital audio signal by increasing the sample rate, resulting in a richer and more detailed listening experience. This technology processes standard CD-quality signals to deliver audio that is clearer and more dynamic, offering a depth that many traditional players lack.

Another key characteristic of the 808 and 808i is the implementation of Meridian’s proprietary Master Quality Authenticated (MQA) technology. MQA enables high-resolution audio delivered in a file format that is compact and easy to stream. This means that users can access studio-quality recordings without sacrificing convenience, making it an attractive option for modern listeners.

Meridian also integrates a unique Digital Signal Processing (DSP) environment within the 808 series. This allows for precise control over the audio output and customization based on the listener's preferences. Various filters and settings can be applied, allowing sound engineers and enthusiasts alike to sculpt their audio experience further.

The build quality of the Meridian 808 and 808i is remarkable. Featuring an aluminum chassis that minimizes resonance, these players are designed to withstand the test of time both in performance and aesthetics. The user interface is intuitive, featuring a sleek touchscreen display that provides easy navigation through audio files, settings, and playback options.

Connectivity is another strong suit of the 808 series. It boasts a range of inputs and outputs, including USB and digital audio output, making it easy to integrate with existing home audio systems. The 808i, specifically, offers enhanced connectivity options and improved internal components, including a more advanced DAC, ensuring even higher fidelity audio playback.

In conclusion, the Meridian Audio 808 and 808i exemplify the pinnacle of audio engineering. With their innovative technologies, exceptional sound quality, and robust build, they stand out as premier choices for audiophiles seeking the ultimate listening experience. Whether used as standalone players or integrated into a larger audio system, the 808 series delivers exceptional performance that brings music to life like never before.
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