Oppo outputting as a pre-amp?

Posted by: Alley Cat on 29 June 2018

Ever since Oppo announced they were withdrawing from the audio market I've wondered about finding a UDP-205.

I got the UDP-203 before the UDP-205 was announced to use with a Samsung 55" TV.  From all accounts not much difference if any in video but the UDP-205 has so many audio related features including being able to use it as a DAC, I've been very tempted to buy to use with my separate surround system but places rapidly sold out.

Last night I noticed a dealer had new stock and ordered one as I thought I'd regret it if they sold out.  Glad I ordered as they were gone by late afternoon.

So just wondering as this device supposedly has good audio prowess if it's feasible to hook it up directly to a NAP250, assuming it has some form of on-board volume control on the analogue outputs - might be rubbish but interested in trying if feasible.

Any thoughts?

Posted on: 29 June 2018 by Alley Cat

I guess the question could be using a non-Naim pre to a Naim power amp!

Posted on: 01 July 2018 by Adam Zielinski

It's entirely feasible.
OPPO can function as a pre-amp. It's one of OPPO's recommended settings.

Posted on: 01 July 2018 by J Saville

From what I have heard, using a Naim power-amp with anything but a Naim pre-amp is not a good idea. Apparently they rely on signal shaping that is done by Naim pre-amps to function properly.

Posted on: 01 July 2018 by Chag...

I thought it was using a Naim pre with a non Naim amp that could be problematic. ????

Chag -

Posted on: 01 July 2018 by Eloise
Chag... posted:

I thought it was using a Naim pre with a non Naim amp that could be problematic. ????

Chag -

No: it’s Naim power with non-Naim pre as the Naim power relies on the pre to do some filtering.  

Of course unless you use a *Cap then most pres have no power with non-Naim power amps.

Posted on: 02 July 2018 by Mr Underhill

Hi Alley Cat,

I use my Oppo 105D as a pre-amp into two 250s, Rear and Centre. Works very well.

The 105D internal processing beat my Naim AV2, which is high praise.

My dealer had some cables made up for me by Chord.

If you have any doubts then call Naim for a chin wag.

M

Posted on: 02 July 2018 by NickSeattle

Mr. Underhill,

Did you happen to try/compare analog-out from the Oppo, through the AV2 analog-in, then out to the 250s?

I am currently running a 205 to my Sony TV, then TOSLINK to my AV2/V175.  Rounding up cables for my own test, soon.

Thanks.

Nick

Posted on: 02 July 2018 by Alley Cat
Adam Zielinski posted:

It's entirely feasible.
OPPO can function as a pre-amp. It's one of OPPO's recommended settings.

Thanks Adam - that was my understanding from a bit of Googling.

I guess the cabling is the issue.

Posted on: 02 July 2018 by Alley Cat
Mr Underhill posted:

Hi Alley Cat,

I use my Oppo 105D as a pre-amp into two 250s, Rear and Centre. Works very well.

The 105D internal processing beat my Naim AV2, which is high praise.

My dealer had some cables made up for me by Chord.

If you have any doubts then call Naim for a chin wag.

M

This is good to hear.

I guess the cables are one of the reasons I posted the image of the rear of the UDP-205 - does anyone know if it's feasible to use the XLR outputs to a 250 - I suspect not without compromises and the phono out to DIN may be better.

Can you remember what kind of cable you had made?

Posted on: 02 July 2018 by Alley Cat
NickSeattle posted:

Mr. Underhill,

Did you happen to try/compare analog-out from the Oppo, through the AV2 analog-in, then out to the 250s?

I am currently running a 205 to my Sony TV, then TOSLINK to my AV2/V175.  Rounding up cables for my own test, soon.

Thanks.

Nick

Keeps updated on what you find Nic, especially cable wise.

Posted on: 02 July 2018 by Alley Cat

Well it's arrived - a day early - and DPD have clearly not been that careful shipping it judging by the gouges and dents in the 'outer' cardboard box - not had time to fully unbox today, but hoping all's fine within.

I have to confess I have a little trepidation about comparing this to my Nova's streaming prowess.  Should be interesting.

Posted on: 02 July 2018 by NickSeattle
Alley Cat posted:
NickSeattle posted:

Mr. Underhill,

Did you happen to try/compare analog-out from the Oppo, through the AV2 analog-in, then out to the 250s?

I am currently running a 205 to my Sony TV, then TOSLINK to my AV2/V175.  Rounding up cables for my own test, soon.

Thanks.

Nick

Keeps updated on what you find Nic, especially cable wise.

Hi, Alley Cat.

It may be a while — the 205 is temporarily about 9’ of cable away from the AV2, which is halfway to the main system.  All on the way to a new room in 8-10 months.

Nick

Posted on: 02 July 2018 by Adam Zielinski
Alley Cat posted:
Adam Zielinski posted:

It's entirely feasible.
OPPO can function as a pre-amp. It's one of OPPO's recommended settings.

Thanks Adam - that was my understanding from a bit of Googling.

I guess the cabling is the issue.

I think you may need custom-made RAC to XLR cables...

Posted on: 03 July 2018 by tonym
Adam Zielinski posted:

I think you may need custom-made RAC to XLR cables...

You'll be on the right road with those! 

Posted on: 03 July 2018 by Adam Zielinski
tonym posted:
Adam Zielinski posted:

I think you may need custom-made RAC to XLR cables...

You'll be on the right road with those! 

And if eventually he gets RCA > XLR he may get there even faster 

Posted on: 03 July 2018 by Mr Underhill
NickSeattle posted:

Mr. Underhill,

Did you happen to try/compare analog-out from the Oppo, through the AV2 analog-in, then out to the 250s?

I am currently running a 205 to my Sony TV, then TOSLINK to my AV2/V175.  Rounding up cables for my own test, soon.

Thanks.

Nick

Hi Nick,

No, but my dealer did the comparisons and I was happy to lean on his knowledge, he is very thorough with his AV - almost as much as his two channel.

M

Posted on: 03 July 2018 by Mr Underhill
Alley Cat posted:

Can you remember what kind of cable you had made?

No, I relied on my dealer - (two rca to din) x 2.

Posted on: 03 July 2018 by Alley Cat
Adam Zielinski posted:
Alley Cat posted:
Adam Zielinski posted:

It's entirely feasible.
OPPO can function as a pre-amp. It's one of OPPO's recommended settings.

Thanks Adam - that was my understanding from a bit of Googling.

I guess the cabling is the issue.

I think you may need custom-made RAC to XLR cables...

I'm assuming it's feasible to take the 2 channel RCA out into a single 3-pin XLR for input to a single NAP 250, or do the Naim pre-amps/PSUs do some under the hood tinkering to allow this in a Naim system.

Posted on: 03 July 2018 by Alley Cat
Mr Underhill posted:
Alley Cat posted:

Can you remember what kind of cable you had made?

No, I relied on my dealer - (two rca to din) x 2.

Thanks - In my case I'd be hoping to get stereo RCA (or the balanced XLRs) fed to a single 3 pin XLR input on a single NAP 250 (I have two but I'd not be running this multi-channel or active).

Posted on: 03 July 2018 by james n
Alley Cat posted:

I'm assuming it's feasible to take the 2 channel RCA out into a single 3-pin XLR for input to a single NAP 250, or do the Naim pre-amps/PSUs do some under the hood tinkering to allow this in a Naim system.

Yes - nothing special going on. It's not a balanced input on the 250, Naim just use an XLR socket for the input (which is why some get confused) wired for CH1,2 and ground. It's a very simple cable to make up (or get made up). Flashback cables can sort you out.

Posted on: 03 July 2018 by Alley Cat
Mr Underhill posted:

Hi Alley Cat,

I use my Oppo 105D as a pre-amp into two 250s, Rear and Centre. Works very well.

The 105D internal processing beat my Naim AV2, which is high praise.

My dealer had some cables made up for me by Chord.

If you have any doubts then call Naim for a chin wag.

M

Just found this:

 

https://www.oppodigital.com.au...o-as-a-pre-amplifier

Posted on: 03 July 2018 by Adam Zielinski
Alley Cat posted:
Adam Zielinski posted:
Alley Cat posted:
Adam Zielinski posted:

It's entirely feasible.
OPPO can function as a pre-amp. It's one of OPPO's recommended settings.

Thanks Adam - that was my understanding from a bit of Googling.

I guess the cabling is the issue.

I think you may need custom-made RAC to XLR cables...

I'm assuming it's feasible to take the 2 channel RCA out into a single 3-pin XLR for input to a single NAP 250, or do the Naim pre-amps/PSUs do some under the hood tinkering to allow this in a Naim system.

As [@mention:1566878603926433] wrote - nothing special going on. So exactly as you wrote - L and R RCA's into NAIM specific XLR configuration.

Posted on: 04 July 2018 by Alley Cat
james n posted:
Alley Cat posted:

I'm assuming it's feasible to take the 2 channel RCA out into a single 3-pin XLR for input to a single NAP 250, or do the Naim pre-amps/PSUs do some under the hood tinkering to allow this in a Naim system.

Yes - nothing special going on. It's not a balanced input on the 250, Naim just use an XLR socket for the input (which is why some get confused) wired for CH1,2 and ground. It's a very simple cable to make up (or get made up). Flashback cables can sort you out.

Thanks for the Flashback link - large range of cables there, I guess this is the type I'd need.

Posted on: 05 July 2018 by Mr Underhill
Alley Cat posted:
Mr Underhill posted:

No, I relied on my dealer - (two rca to din) x 2.

Thanks - In my case I'd be hoping to get stereo RCA (or the balanced XLRs) fed to a single 3 pin XLR input on a single NAP 250 (I have two but I'd not be running this multi-channel or active).

Good point, well made!

Posted on: 05 July 2018 by james n
Alley Cat posted:
james n posted:
Alley Cat posted:

I'm assuming it's feasible to take the 2 channel RCA out into a single 3-pin XLR for input to a single NAP 250, or do the Naim pre-amps/PSUs do some under the hood tinkering to allow this in a Naim system.

Yes - nothing special going on. It's not a balanced input on the 250, Naim just use an XLR socket for the input (which is why some get confused) wired for CH1,2 and ground. It's a very simple cable to make up (or get made up). Flashback cables can sort you out.

Thanks for the Flashback link - large range of cables there, I guess this is the type I'd need.

Yes - that's the one. Dave's a good chap and will make you exactly what you want if you want different lengths etc.