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Oppo BDP-105D Blu-ray player
page 2
page 3
p4 sound quality
page 5 conclusion
page 6 measured performance
All Pages

Measured by our Rohde&Schwarz UPV, the world's most advanced audio analyser

MEASURED PERFORMANCE

Using the Oppo BDP-105D as a DAC, frequency response with 192kHz sample rate PCM digital from a LaCie USB key (memory stick) extended to a very high 90kHz, so Oppo have opted to use the Sabre32’s ‘fast’ filter. Similarly, running the same file from a MacBook Pro via USB gave the same result, so the player has enormous analogue bandwidth, as high as possible from 192kHz sample rate.
    Interestingly, the Mac showed, on its Audio/Midi console (in Utilities), 352.8kHz and 384kHz sample rate options, usually only available through an I2S link, and at these output sample rates from the Mac the Oppo played perfectly, but it does not of course alter the analogue bandwidth of a 192kHz test file. You must record at these sample rates to be able to benefit from them, and 384kHz is way off the consumer map at the moment.
    The S/PDIF inputs, electrical (coaxial) and optical, accept 96kHz sample rate data maximum, a peculiar limitation, especially via the electrical connection (optical is often limited to 96kHz by the TOSLINK optical receiver unit). Analogue bandwidth extended to 46kHz (-1dB) through these inputs. The problem here is not performance related, it is that playing 192k invokes a “no play” scenario (i.e. silence) from the player, and this is best avoided. Play of 192kHz sample rate data via S/PDIF electrical is common nowadays, so this limitation of the BDP-105D is baffling, and in stark contrast to its ability to play 384kHz via USB.
    With 24bit data, distortion at -60dB was as low as it can get at 0.015%, but the Oppo outputs from the Sabre32 direct to XLR and this is what the ESS DAC can do. Dynamic range (EIAJ) measured 123dB and this is also exactly as expected from a Sabre32 properly implemented. It is a very high figure, only bettered when two Sabre chips are used, one per channel, with all eight channels paralleled. So this player fully realises the potential of the Sabre32 and should fully convey its excellent sound.
    With SACD, measured performance was equally impressive. Analogue bandwidth extended to 40kHz (-1dB) and distortion was a very low 0.018% at -60dB, right on par with 24bit PCM code: the BDP-105D gets the best from SACD discs.
    Measurements from the BDP-105D are as expected from a Sabre32 DAC, meaning they are as good as it gets when one chip is used, and well beyond rivals. That puts this player in the top league, measurement wise. However, there are inconsistencies, inability to accept 192kHz sample rate PCM data via its S/PDIF inputs being major. NK

Frequency response    4Hz-90kHz
Separation    113dB
Noise    122dB
Distortion    0.015%
Dynamic range    123dB

 

FREQUENCY RESPONSE, 192kHz sample rate

 

DISTORTION, 24bit, -60dB

 

DYNAMIC RANGE (EIAJ, –63.227dB – 60dB = 123dB)



 

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