Oppo BDP-105 Universal Disc Player - Modified by Electronic Visionary Systems

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Sadly, OPPO ended production of all players so these are becoming super desirable and difficult to source in good condition.

This thing plays every type of disc you can throw at it!

This particular unit was also modified by Electronic Visionary Systems (EVS) to maximize its performance.

Mods in this player include the following (From EVS):

Mods to 2-channel output board

1. Change all 8 power supply diodes in the analog linear supply to great sounding soft recovery diodes. This makes the sound more detailed, 3D and more musical.

2. Add two WA Quantum capacitor chips to the two large power supply caps in the analog stage. Way more real and detailed. Add four more small capacitor quantum dots to power supply caps.

3. J-fet buffer output stage for both unbalanced and balanced outs: This zero feedback j-fet buffer output stage is super, super pure sounding. This output stage uses our hand made cascaded current sourced shunt regulator system. Only one fet in the signal path. No I-V converter, no op amps. There is just one resistor, one j-fet and one coupling cap in series with the signal. The resistors are super world class (better than any resistor I have ever heard). The coupling cap is a JB JFX polyprop cap with a WA Quantum dot on it and it is bypassed by my modified Wima .33uf polyprop cap. This output stage is more sonically pure than anything anyone else is doing, including tube/fet stages. The only downside of this output stage is that it puts out just 1V RMS per phase. If you have a preamp then you are fine. However, if you are running the Oppo straight into an amp or into a passive line stage then you might not have enough gain. The loss from stock is 6db.....maybe a couple of o'clocks on the volume knob. This mod gives you modded unbalanced and balanced outs.

4. Add a WA Quantum Semi conductor chip to the two channel DAC. More detailed and real.

5. Change 4 capacitors on the DAC power supply to better caps including 2 modified .33 Wima film caps and also add one WA Quantum chip to one of the caps. Cleaner and more focused and real.

6. Change the DAC clock to low jitter femto clock.

7. Damp regulator heat sinks for way more palpable sound.

Advanced Mods

1. Audio Magic Pulse Gen ZX installed on AC input. More 3D and pure and clear. $400 installed.

2. Add 4 WA Quantum chips to rectifiers and 4 more WA Quantum chips to some capacitors. Cleaner, purer sound. $100 installed.

3. Change the switching power supply that is used for the main processing board and transport to a linear supply. This makes the imaging and depth much better and allows for much cleaner transients, clarity especially when the music gets dynamic and just plain more real. $400 installed.

4. Add two Mad Scientist Neo Kegs to the AC input and replace AC input wire with Furutech PCOCC wire and the stock IEC with a Shurter IEC. This gets rid of the last "digital grain" and makes it sound more pure. Highly recommended. $90 installed.

5. Black the underside of both CD covers and all around the laser assembly with flat oil based paint. This makes all discs sound warmer, more musical and cleaner. Damp the disc clamp with constrained layer damping material. This makes the sound cleaner, clearer, faster and gives a better tonal balance. Damp the disc clamp holder and the transport cover with constrained layer damping material. Way more natural, pure, detailed and real sounding. Apply AudioMagic Blackout Paint (damps and shields) to the CD tray and then paint over that with conductive black paint. Cleaner and more real. $150.

6. Remove toslink output connector......way more pure sound. Free. You really need to have me do this!

Headphone output mod

Everything I do to the machine except the analog output stage mods makes the headphone output better. My modded Sennheiser 600s sound outrageous playing on the fully modded player However, changing the resistors in the IV converters to really great surface mount resistors, changing the output resistors to a parallel bunch of great surface mount resistors and putting a WA Quantum chip on the output amp really makes a sweet improvement.

Modification Notes from our Lab:
• 7 Channel discrete output has was converted from Single Ended to Balanced.
• Optical digital output removed.

Please see our last photos for full specifications. 

* From Oppo - Playable Disc Types

BD-Video, Blu-ray 3D, DVD-Video, DVD-Audio, AVCHD, SACD, CD, HDCD, Kodak Picture CD, CD-R/RW, DVD±R/RW, DVD±R DL, BD-R/RE.

*Compatibility with user-encoded contents or user-created discs is on a best effort basis with no guarantee due to the variation of media, software and techniques used.

Manual/Support:

Click here to read more from the Oppo Digital BDP-105 support page.

Recommended Cables:

Kimber Kable - RCA Interconnects - Better

Kimber Kable - BALANCED XLR Connectors - Better

Kimber Kable - Digital AES/EBU (XLR Connector) Interconnect

Kimber Kable - Coaxial Digital Interconnect

Kimber Kable - Select Series Reference USB Cable

Kimber Kable - Power Cords - Better

The SkyFi Testing Process for CD Players:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect resistors and other passive components for signs of overheating. When the unit is first powered on we check the drawer mechanism function.

After the visual inspection we connect the CD Player’s RCA outputs to our Sencore PA81 Power Analyzer which simulates a real world input impedance and allows us to monitor the output on an oscilloscope. We start with a test CD with precision test signals to verify proper output on both channels. If the CD player has balanced outputs these are also tested at this time. If this check passes, we move onto evaluation with actual music CDs. We listen for clicks, skips, and drops during playback. At this time we also check the transport functions including skip, ff, rw, play, pause, repeat, and programming if applicable. If the unit has a remote control, all remote control functions are verified.

If the CD player is capable of SACD playback we test its ability to read SACD layers on multiple discs including standard and hybrid SACDs. At this time we also check the unit’s digital outputs where applicable. If SACD layers are being properly read we should see the digital outputs mute during playback. On redbook CD playback we verify that each digital output maintains proper lock on our bench DAC.

After bench testing is completed, CD players are set up for testing on our long term test rig. During extended testing we make sure that unit can play through several different discs from beginning to end with no skips or lock ups.