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OPPO BDP-93EU modifications have been developed by Audiocom to push the performance envelope of 3D Blu-ray to the next level. Like the BDP-83, our aim with the 93 is to extract every last ounce of performance from the Marvell KYOTO G2, OP8531 chipsets to deliver the best possible Blu-ray picture and sound. The BDP-93 is such an accomplished player with Blu-ray or DVD, that we have designed the upgrades to specifically target all the areas that maximise its already fine achievements.  These targeted areas are removing jitter, resonance control, reducing AC power supply noise, reducing DC power supply noise, EMI/RFI reduction. With all these sectors of the player improved the players performance puts is in a class of its own regardless of price!

What’s New in the 93?

The BDP-93 has a new BD-Drive, the transport is a custom-built loader made by Tohei Group of Japan, the laser pick-up is still Sony.  The laser pickup is still Sony.  During development Oppo have worked closely with Tohei to control and isolate the vibration caused by the high rotation speed and heavy motor parts of the Sony laser pickup. Key new features include; Dual HDMI outputs, Wireless-N networking and eSATA port in addition to two USB ports.

Oppo have clearly focused on Blu-ray and DVD image quality for the BDP-93, with less attention to 2-channel or 7.1-channel sound. This considered the 93 is better suited to the video user where the HDMI output might be connected to a HD-TV or AV processor. The 7.1-channel sound is very good within its class, but those seeking higher-end performance should consider the Oppo BDP-95 3D Blu-ray Player.

TO PURCHASE AN OPPO BDP-93 WITH MODIFICATIONS INSTALLED CLICK HERE

Oppo BDP-93 Modifications

The starting point for our BDP-93 mods was to improve the switching power supply. The parts selected for the task are based on delivering the optimum impedance, ESR, capacitance value at each circuit node, bypassing and decoupling. A capacitor has a ripple voltage (seen as noise on the supply voltage) proportional to the ESR of the capacitor. By selecting the best grade low ESR capacitors we drastically reduce ESR which results in lower noise.

Step two was to improve the player master clock. The Oppo BDP-93 has 4 clocks, but we are only concerned with the ‘master clock’ for the core processer, the OP8531 chipset. The OP8531 has a built-in ‘Pierce Oscillator’ (inverter gate) the external quartz crystal provides the required clock frequency. This type of oscillator is simple to implement but has the worst arrangement for high phase noise, jitter. The Pierce Gate receives noise from the hundreds of switching processes of the OP8521G chipset which is transferred to the output of the clock signal. We replace the Pierce Oscillator with the Superclock 4. With the OP8531 referenced to an ultra-low jitter external clock jitter is significantly reduced with significant improvements to all video, audio formats and video and audio outputs.

The clock will only perform as well as the power supply that feeds it, less power supply noise in this case = less phase noise. To achieve the quietest power supply performance we installed a Bybee Music Rail™ following a regulator output. This is a compact device which reduces signal and power supply noise up to 45 db, achieving limit to the noise floor of 20 nV per root Hertz.

More information available soon.

Detailed list of upgrades included, additions and changes are highlighted:-

The OPPO BDP-93EU Reference Upgrade:-

■ Furutech FI-10 Gold IEC inlet.
■ Upgraded video/digital power supply.
■ Superclock 4 Ultra-low jitter clock system.
■ Bybee Music Rail for clock supply.
■ Bybee Slipstream purifiers for AC input.
■ SteinMusic resonance control for power & main PWB.
■ Sontech acoustic damping for BD drive.
■ RF absorbing techniques are employed in key locations.

The OPPO BDP-93EU Signature player provides the ultimate video experience, providing riveting picture & sound from DVD/Blu-ray.

The OPPO BDP-93EU Signature Upgrade:-

■ Furutech FI-10 Rhodium IEC inlet.
■ Upgraded video/digital power supply.
■ Deep Cryogenic Treatment (DCT) for power PWB.
■ Bybee “Super Effect” AC Bullets (laser welded version)
■ Superclock 4 Ultra-low jitter clock system.
■ Bybee Music Rail for clock supply.
■ SteinMusic resonance control for power PWB.
■ Sontech acoustic damping for BD drive & chassis.
■ SteinMusic E-Pad +S for BD drive.
■ RF absorbing techniques are employed in key locations.
■ Demagnetisation for entire BD player.