ND555 specification - what a load of... mistakes?

Posted by: rjstaines on 20 May 2018

I just looked at the ND555 specs on the Naim web site and I'm seeing some wierd and wonderful connections, like a 5pin din INPUT and THREE digital OUTPUTS (see below my copy/paste).

Anyone can make a mistake, but hey, there's surely a limit when you're tasked with creating a web page for a world flagship streamer...

Am I being too harsh, or is this player really more equipped than anyone could have hoped for?

Connectivity

Audio Inputs
2 x optical TOSLink (up to 24bit/96kHz)
2 x coaxial RCA (up to 24bit/192kHz, DoP 64Fs)
1 x BNC (up to 192kHz, DoP 64Fs)
1 x RCA
1 x 5-pin DIN

Audio Outputs
1 x RCA
1 x 5-pin DIN

and...

Audio Outputs

Digital (S/PDIF)

2 x Optical TOSLink (up to 24bit/96kHz)

2 x Coaxial RCA (up to 24bit/192kHz, DoP 64Fs)

1 x BNC (up to 192kHz, DoP 64Fs)

Analogue

1 x RCA
1 x 5-pin DIN

Posted on: 20 May 2018 by rjstaines

OK, anyone can make a mistake.. I highlighted the wrong 5pin DIN spec at first and then corrected it.  But my excuse is that I'm not creating a real live Naim web page.

Posted on: 21 May 2018 by Richard Dane

Well done Roger, you're the first to notice the error, and that shows you're definitely paying attention. 

p.s. thanks, I'll let someone at Naim know...

Posted on: 21 May 2018 by Bert Schurink

As long as it’s only the specs on paper it’s still ok 

Posted on: 21 May 2018 by Laxton

Can someone advise is the network LAN connection 10/100 or gigabit? Thanks in advance.

Posted on: 21 May 2018 by Mike-B
Laxton posted:

Can someone advise is the network LAN connection 10/100 or gigabit? Thanks in advance.

Ethernet is 10/100Mbps.       

Posted on: 21 May 2018 by Laxton
Mike-B posted:
Laxton posted:

Can someone advise is the network LAN connection 10/100 or gigabit? Thanks in advance.

Ethernet is 10/100Mbps.       

Thanks Mike.

Posted on: 21 May 2018 by ChrisSU
Laxton posted:
Mike-B posted:
Laxton posted:

Can someone advise is the network LAN connection 10/100 or gigabit? Thanks in advance.

Ethernet is 10/100Mbps.       

Thanks Mike.

You shouldn't have to worry about the speeds supported - switch ports should 'autonegotiate' to run at the highest level of performance that both ends can support, so connecting to either a 100 meg or gigabit device should work fine.

Posted on: 21 May 2018 by mattl

I notice that the ND555 white paper specifies "Requires 555 PS DR power supply"

Does this mean that the ND555 will not work with a Non-DR 555PS ?

Posted on: 21 May 2018 by Gazza

Good question, I would have thought it would, but the lower noise floor of the 555 ps DR version would be much better. Need a Naim person to advise or your dealer.

Posted on: 21 May 2018 by rjstaines
mattl posted:

I notice that the ND555 white paper specifies "Requires 555 PS DR power supply"

Does this mean that the ND555 will not work with a Non-DR 555PS ?

No it doesn't,  but if you, as a manufacturer, were telling your customers what power supply is needed wouldn't you quote from your current catalogue?    Non-DR 555s are no longer a current product in the range.

Having said that, Gazza has a good point (above) about the noise floor, so if I was spending £13k on a streamer, I'd want to make sure I was getting the best out of it and wouldn't want to be using a non-DR power supply with it.

Posted on: 21 May 2018 by Chag...

The question then is whether the ND555 can alternatively work with an XPS-DR, XPS2 or XP5 XS, the last two being now discontinued. ????

Chag -

Posted on: 21 May 2018 by james n

No - The ND555 needs two Burndy connections so will only work with the 555PS.

There is no single Burndy and link plug option to enable use with the single Burndy output XPS /5XS supplies, unlike the NDS which had this option.

James

Posted on: 21 May 2018 by yeti42

I spoke to a Naim chap in Munich and mentioned I would be running it from a non DR 555ps, he didn't think it would be a problem. No doubt it will sound different with a DR one and they may not have bothered testing it's performance without DR regulators in the power supply. If it sounds crap like that I'll just have to get the doctoring done sooner rather than later but I suspect it won't, I've been getting used to a Rega DAC for the last year or so (though I prefered that to the Chord I tried).

Posted on: 21 May 2018 by Chag...

Thanks James indeed. It wouldn’t make any sense from a 500 series prospective. ????

Chag -

Posted on: 21 May 2018 by james n
Chag... posted:

Thanks James indeed. It wouldn’t make any sense from a 500 series prospective. ????

Chag -

Indeed. Less of a compromise on the internal wiring of the ND555 too as it can be optimised from the off to use the two outputs rather than having to run a less optimal route to allow the use of a link plug in single output mode.

Posted on: 21 May 2018 by elkman70
james n posted:

No - The ND555 needs two Burndy connections so will only work with the 555PS.

There is no single Burndy and link plug option to enable use with the single Burndy output XPS /5XS supplies, unlike the NDS which had this option.

James

I wonder if you could run it with 2 xpsdr.

Posted on: 21 May 2018 by elkman70

Or a 555 dr and a xpsdr.

Posted on: 21 May 2018 by james n

I'm not sure what benefits that would bring (or whether it would work due to the number of rails required). I'd stick with the recommended single 555PS and if money is no object then two 555PS supplies 

Posted on: 21 May 2018 by ChrisSU

You can only run it from a 555, XPS or XP5 will not power it.

Posted on: 21 May 2018 by james n

Indeed - we worked that out further back up the thread.

Posted on: 21 May 2018 by hungryhalibut
ChrisSU posted:

You can only run it from a 555, XPS or XP5 will not power it.

There is a missing colon, methinks. 

Posted on: 21 May 2018 by rjstaines
Hungryhalibut posted:
ChrisSU posted:

You can only run it from a 555, XPS or XP5 will not power it.

There is a missing colon, methinks. 

Goodness gracious HH, you're quite right, there's something missing.  I'd have used a semi colon or even a full stop  (that's 'period' for our friends accross the pond, of course).

It's a shame the folk who wrote the web page in question weren't as observant as you.  One can only assume they were in a great hurry to get the information to us readers.

But as I noted earlier in this thread, anyone can make a mistake!

Posted on: 21 May 2018 by ChrisSU
Hungryhalibut posted:
ChrisSU posted:

You can only run it from a 555, XPS or XP5 will not power it.

There is a missing colon, methinks. 

There you go...

Posted on: 21 May 2018 by Laxton

The specs did not mention if the ND555 comes with both burndies. Does anyone know if it’s part of the package? 

Posted on: 21 May 2018 by cdboy

I believe so.