The main features of the receiver are 7.1 channels, 1080p HDMI, 110 W/channel, THX Select 2, Dolby Digital EX, DTS-ES and DTS 96/24, WMA PRO multichannel, and XM HD radio readiness, with Neural Surround. Inputs include eight video, three audio, five audio/video, two HDMI, six optical, three coax, five S-Video and three component video. There are two video outputs, one XM-ready output, one HDMI 1080p-compatible output, one optical digital output, four outputs for S-Video and one for component video. MSRP $499.
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Summary
The power supply essentially comprises two D5SBA 20 Shindengen diode bridge rectifiers, a hefty (10-pound) ATS7407 power transformer and two Nichicon capacitors for output-amplifier power stability.
The signal input and output circuits were spread across three pc boards in a stacked configuration and were driven mainly by HC4051A and LVX4053 analog multiplexers and demultiplexers from ON Semiconductor. In addition, there is one LA7109 75-ohm DVD video driver from Sanyo and a PDC131A character generator from Pioneer. The latter is likely for video overlay purposes on the video input. A Pioneer-marked ASIC controls the I/O network.
the Freescale DSPC56371AF180 24-bit DSP now runs Pioneer's Digital Core Engine, providing all of the receiver's multichannel sound processing. That processing covers eight advanced concert and cinema surround modes, including the various Dolby modes, Pioneer's own Multi-Channel Acoustic Calibration system and other original sound enhancement processing, along with THX and WMA9 Pro
The DSP is supported on the same pc board by the popular AKM AK4628A 96-kHz/192-kHz, 24-bit, two-channel A/D converter and eight-channel D/A converter (with on-chip switched capacitor filter and 106-dB dynamic range), the AKM AK4114VQ digital audio interface and an XM satellite radio tuner. The team went with the AKM converters "to achieve the high-quality S/N [signal-to-noise], frequency response and THD [total harmonic distortion] required by THX," said Suzuki.
The video decoder and overlay board comprises the two HDMI inputs and single HDMI output. These are driven by an Analog Devices ADV7184 multiformat SDTV video decoder with fast switch overlay support as well as an Analog Devices ADV7172 digital PAL/NTSC video decoder.
The amplifier section, meanwhile, relied on Pioneer's own Advanced Direct Energy (ADE) MOSFET design to produce highly efficient, high-end sound for each channel. According to Suzuki, the technique allows loudness with high quality, a sometimes difficult combination. The amplifier section comprises 14 SK SAP 17 MOSFETs spread across two finned heat sinks
