Primare AB • Renvägen 1 • SE-35245 Växjö • Sweden • Tel +46 470 729215 • www.primare.net
September 2011
BD32 Design Brief, 4 pages
BD32 Universal Player
The Primare BD32 is a high quality true multi-format/multi-channel Blu-ray, DVD, CD,
SACD, DVD-A and media player, equipped with dual HDMI 1.4 (3D) and based on the
OPPO BDP-93. The media player can reproduce files (music, video, pictures) from a wired
network (and Wi Fi with external USB dongle), USB or eSata, and has the ability to
convert any audio format to PCM or play them in their native formats.
Most importantly, the BD32 is not just a re-boxed OPPO player. It differs
significantly from the BDP-93 by having a proprietary Primare audio stage,
multiple custom-engineered power supplies, a superior user interface, and
added input and control functions.
Audiophile Topology: Audio
The Primare audio circuit is capable of decoding all native audio formats including DSD,
Dolby True HD and DTS Master audio. It has a fully-balanced stereo (XLR) output, an
unbalanced stereo RCA output, and an 8-channel unbalanced RCA (7.1 multi-channel)
output.
The stereo output circuitry uses the flagship Crystal DSD DAC CS4398 in conjunction
with Primare’s signature fully-balanced analogue output stage comprising Burr-Brown
OPA2134 OP-Amps, WIMA and EPCOS polypropylene filter capacitors and large MELF
resistors; and a single-ended output stage comprising a single MOSFET transistor fed by
an active current source rather than passive resistors. As in the DVD-30, the SACD
(DSD) circuit has its own dedicated relay-controlled-filter signal path.
The multi-channel output stage is a scaled-down version of the stereo output stage,
driven by a Crystal CS4382A multi-channel DSD DAC in conjunction with an analogue
stage comprising Burr Brown OPA2134 OP-Amps, WIMA and NPO SMD capacitors and
large MELF resistors.
more…
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