Denon AVR 3300 Technotes - Page 3

To preserve the fidelity of the high bit data provided by the DDSC-D SHARC processor section, the AVR-3300 features full 24 bit 96 kHz premium grade DACs on all six audio channels. Unlike other processors which use cheaper integrated codecs (combination A/D and D/A chip), the Denon DDSC-D philosophy extends through the D/A section, featuring full 24 bit 96 kHz digital filters for all six channels, followed by full 24 bit 96 kHz premium Analog Devices AD-1855 DACs. AVR-3300 DDSC-D Surround Processor The AVR-3300 features a unique Denon-designed digital interface receiver, that can accept high bit/high sampling stereo PCM digital audio, up to 24 bit word length and up to 96 kHz sampling frequency. Recently issued DVD-Video discs with 24/96 audio, such as the Chesky Records and Classic Records 24/96 audiophile DVDs, provide a very high resolution stereo presentation with far greater dynamic range and frequency response, compared to CD. Denon's newer DVD player models, such as the DVM-3700, are equipped with digital outputs that provide a real 24 bit, 96 kHz stereo PCM bitstream. When a compatible Denon DVD player is connected digitally to the AVR-3300, the listener experiences real 24 bit/96 kHz stereo audio via direct digital decoding and the use of the real 24 bit/96 kHz digital filters and DACs employed in the DSP output section. Other receivers cannot handle 24/96 kHz PCM sources, and downsample and/or truncate accordingly, providing only CD-quality audio with these higher resolution DVDs. Most competitive DVD players also truncate and downsample the DVDs 24/96 PCM bitstream, outputting only a CD-equivalent 16 bit, 48 kHz PCM bitstream at their digital output(s). In the presence of a 24/96 digital input signal, the AVR-3300 indicates via the front panel display that real 24/96 decoding is occurring, and switches to stereo mode automatically for best sound (surround simulations are disabled for 24/96 pure stereo sources). Intelligent Volume Control The AVR-3300 features a variable volume control design, with a "smart" volume control algorithm. Via remote control, the volume is raised or lowered in gentle 1 dB steps, or more quickly if the volume up/down buttons are pressed and held. The master volume knob on the front panel has the ability to detect whether it is turned quickly or slowly and react accordingly. If the user slowly turns the master volume knob up or down, the volume is adjusted in 1 dB increments accordingly. Give the knob a quick twist up or down, and the volume will raise and lower with greatly increased speed (much like an analog volume control).