oppo's volume control

The clicks and popping only starting occurring after the Oppo was connected as preamp for about a week. Which reminds me, I started experiencing hiss as well. It's hard to say how long the above quoted reviewers had their Oppos set up in preamp operation, but the Oppo threads at AVS have repeated complaints of this.

It has been my experience that separate preamps typically have nothing to do with "tonal/colouration" changes in a system.

You have another problem Runnin if as it should not happen.

A reply email I recieved from the the head of technical department of Oppo USA regarding direct connection to poweramps.

"The BDP-103 players will lose bits if you lower the audio below 80.

The BDP-105 players will not lose resolution since they are 32-bit DACs. So they are the ideal solution if you want to go direct to an amplifier.

Best Regards,

Customer Service
OPPO Digital, Inc.
2629B Terminal Blvd.
Mountain View, CA 94043
Service@oppodigital.com
Tel: 650-961-1118
Fax: 650-961-1119"

Cheers George

The analog stereo output of my 105 goes to a Parasound JC-2 preamp, surrounds go directly to Proceed HPA amps, SW to a Velodyne SMS-1 (LF acoustic room correction). The level of the JC-2 is set to match the other channels, and the volume is controlled by the 105. The result is excellent. When the Sony XA5400ES or JC-3 phono stage is selected at the preamp, the volume is controlled by the JC-2.

db

@Georgelofi: Fighting a losing battle. It's OK to be wrong.

05-14-14: Doak
@Georgelofi: Fighting a losing battle. It's OK to be wrong.

Not at all Doak, it's ok if some can't see the forest for the trees. Direct is the best transparency possible, runnin obviously has problems coming out of his source doing this, if he has odd noises this way.
They sound like they could be faulty dac glitches or dc offset pops from the buffers, whatever it is, it's not right to make noises like this, and a capacitor coupled preamp is hiding it for him, by not letting it through, but it still should not be there in the first place.
It could be a problem with his own Oppo, or that model was not sorted properly in it's design, as a normal amps input impedance + interconnects will not load it any better or worse than a preamp with the same interconnects will.

Cheers George