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APPENDIX 5

If you want to capture the highest quality of audio, the ADA-8XR makes an

excellent choice whether you are recording vocals, single instruments, drums

or orchestra, or providing multiple outputs for external analogue summing.

The ADA-8 also allows conversion between its various interface formats, for

example, between Direct Stream Digital (DSD) and Pulse Code Modulation

(PCM) systems such as Pro Tools, or between AES and DSD.

Apogee

www.apogeedigital.com

Apogee, one of the USA’s leading converter manufacturers, also offers a

range of products that can interface with Pro Tools, including the AD-16X and

DA-16X, the Rosetta 800 and Rosetta 200.

Figure A5.19

Apogee AD-16X and

DA-16X.

With up to 192k standard sample rates, the 16-channel AD-16X and DA-16X

converters both use Apogee’s C777 digital clocking process, developed with

Apogee’s advanced Direct Digital Synthesis technology and DSP-based digital

 ltering. Using a stable, crystal based digital PLL for clocking, the AD-16X and

DA-16X both o er very low-jitter performance – helping to keep the sound

quality high throughout the production process.

The AD-16X lets you convert analogue audio coming in at line level from

a mixing console or other analogue source into digital audio. It features

Apogee’s proprietary SoftLimit analogue peak limiter, which helps to keep

recording levels high while avoiding clipping by allowing the user to capture

an additional 4–6 dB of level without ‘overs’.

The DA-16X lets you convert from the digital world back into analogue audio

to feed into analogue mixers or recorders or to use for high-quality monitoring

and mastering purposes. The DA-16X features Apogee’s proprietary UV22 HR

dither technology that is used for reducing the word-length of a high-resolution

digital signal to 16 bits for CD mastering – while preserving 24-bit detail.

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