Blimey, the 272 is even better than I thought it was...

GraemeH posted:

I saved my money and bid instead on a pair of TQB jumper cables, which I got for £28!

G

I didn't, and the pre-loved XPS-DR is on its way! Will report back once it's installed.

Quick question, when connecting the unit to a 272 can anyone tell me if the signal ground switch on the back of the 272 should be set to 'floating' or 'chassis'?

Thanks

Atherton posted:

GraemeH posted:

I saved my money and bid instead on a pair of TQB jumper cables, which I got for £28!

G

I didn't, and the pre-loved XPS-DR is on its way! Will report back once it's installed.

Quick question, when connecting the unit to a 272 can anyone tell me if the signal ground switch on the back of the 272 should be set to 'floating' or 'chassis'?

Thanks

Congrats! I look forward to reading the superlatives.

I’ve really held off as my dealer may be procuring one for a home dem soon.

G

PS Chassis

I think the answer is leave the switch alone because the XPS-DR shouldn't affect it. That's what I did when I added an XPS-DR later and it's still set to floating (I just checked).

best

David

Atherton posted:

Quick question, when connecting the unit to a 272 can anyone tell me if the signal ground switch on the back of the 272 should be set to 'floating' or 'chassis'?

If the 272 is the only source - which it is according to your profile - it should be set to chassis.   Adding the XPS does not change that rule.   

Atherton posted:

Quick question, when connecting the unit to a 272 can anyone tell me if the signal ground switch on the back of the 272 should be set to 'floating' or 'chassis'?

If you have a source connected with an analogue cable, and that source is grounded, set it to floating. Otherwise, set it to chassis. (It's in the manual!) 

If the 272 is used by itself, the ground switch should be set to Chassis. If another source is connected - such as David’s CDX2 - it should be set to Floating. This is, of course, the signal earth, and is nothing to do with the mains earth. 

And well done Atherton on the new XPS. And just in case you ask, the 272 does not need to be connected to the mains once the XPS is attached. So you still need only two plugs. Don’t forget to massage the Burndy and shape it so that the connectors are not strained. Ensure it hangs free without touching the walls, the stand, or any other wires. 

Thanks for that advice guys, I'll leave the switch where it is.

Hungryhalibut posted:

If the 272 is used by itself, the ground switch should be set to Chassis. If another source is connected - such as David’s CDX2 - it should be set to Floating. This is, of course, the signal earth, and is nothing to do with the mains earth. 

And well done Atherton on the new XPS. And just in case you ask, the 272 does not need to be connected to the mains once the XPS is attached. So you still need only two plugs. Don’t forget to massage the Burndy and shape it so that the connectors are not strained. Ensure it hangs free without touching the walls, the stand, or any other wires. 

Just to be super clear, another source = another Naim source? Turntable?

Jay posted:

Hungryhalibut posted:

If the 272 is used by itself, the ground switch should be set to Chassis. If another source is connected - such as David’s CDX2 - it should be set to Floating. This is, of course, the signal earth, and is nothing to do with the mains earth. 

And well done Atherton on the new XPS. And just in case you ask, the 272 does not need to be connected to the mains once the XPS is attached. So you still need only two plugs. Don’t forget to massage the Burndy and shape it so that the connectors are not strained. Ensure it hangs free without touching the walls, the stand, or any other wires. 

Just to be super clear, another source = another Naim source? Turntable?

It means any source connected by an analogue cable which includes an earth.

ChrisSU posted:

It means any source connected by an analogue cable which includes an earth.

.........   not strictly correct,  it's a source that has its signal -ve grounded.    With Naim this means a CD player,  NAT's don't ground the signal but they do have a (power) earth connected to the case.   Its all about the preamp (s) that need to have a single source signal ground.     It really could stand some better instructions from Naim,  it won't break anything to get it wrong,  but Mk-II audio receptors might tell you which is best.    

Atherton posted:

GraemeH posted:

I saved my money and bid instead on a pair of TQB jumper cables, which I got for £28!

G

I didn't, and the pre-loved XPS-DR is on its way! Will report back once it's installed.

 

Well done, that man, and someone picked up a 272 at something of a bargain price. 

If one has a Rega TT (in my case a RP8) with an analogue interconnect into the 272 do I need it set to chassis or floating?

S3 posted:

If one has a Rega TT (in my case a RP8) with an analogue interconnect into the 272 do I need it set to chassis or floating?

If you have a Rega TT fed straight into a 272 it's going to be awful quiet and have a weird frequency response.

If (as I suspect) you have a phono stage in between the two, it depends on whether that connects the audio 0V reference (i.e. the shells of the phono connectors or pin2 of a DIN connector) to the mains earth or not.

If the shells of the phonos are earthed then set the 272 to Floating
If the shells of the phonos are floating, then set the 272 to Chassis

Sorry. Complete idiot! Yes I have a Rega aria phono stage in between the RP8 and the 272. I have no idea whether the “shells of the phonos” are earthed or not. It is a completely standard set up. 

S3 posted:

Sorry. Complete idiot! Yes I have a Rega aria phono stage in between the RP8 and the 272. I have no idea whether the “shells of the phonos” are earthed or not. It is a completely standard set up. 

In the mean time I looked up the Rega Aria (I realised you may have your system in your profile!), on the images I found there are only two pins on the IEC connector for the mains (Line and Neutral).

So assuming you have the same model, it isn't earthed and so can't earth the audio 0V reference...

Set the 272 to Chassis.

Note:  If you have shielded Ethernet (STP, SSTP or SFTP) connection to the 272 you'll need to put a break in the shielding somewhere to avoid an earth loop being created by the network cabling.

Thanks Huge. Most helpful. 272 remains set to chassis.

Sometimes, when listening to music on new and better equipment, one gets an ‘I have never heard that before’ moment. I was listening to my favourite Keith Jarrett album - Up For It - this morning. It’s a live recording from a festival in the South of France, and at the end of the first track there was a dog barking in the distance. I’ve heard the album loads of times, and was quite surprised as I’d never heard the dog before. The sense of the dog being a long way from the stage was very real, and quite spooky really. Anyway, it’s a fine album and highly recommended, dog or no dog. 

Hungryhalibut posted:

Sometimes, when listening to music on new and better equipment, one gets an ‘I have never heard that before’ moment. I was listening to my favourite Keith Jarrett album - Up For It - this morning. It’s a live recording from a festival in the South of France, and at the end of the first track there was a dog barking in the distance. I’ve heard the album loads of times, and was quite surprised as I’d never heard the dog before. The sense of the dog being a long way from the stage was very real, and quite spooky really. Anyway, it’s a fine album and highly recommended, dog or no dog. 

Woof, woof woof...clear as a bell on my lowly 272/250DR/Tab 10 too...and that’s on Tidal!

Sounds like a beautifully engineered album.  If I could only get over his infernal grunting.

G

I’ve listened to his stuff so many times that I do longer really hear the grunting. At least he doesn’t bark. It’s worth persevering. 

I agree Jarretts humming it is a bit like vinyl clicks and pops, your brain learn to disregard them 
If you have not heard the Standards vol. 1 & 2 albums I can truly recommend them (came out roughly 20 years earlier), great stuff!

It's sad that I just did this given that Keith Jarrett's work is something I have barely ever played, and not really for me, but in the name of science.....  Well, yes, there is clearly a dog barking some distance away at the end of the track, and after the song finished thankfully.  Or maybe it was there throughout, but our gear wasn't up to revealing this?  A terrifying thought.  The accompaniment from what sounds like two cats having angry, but ultimately satisfying sex, with the odd interruption from a passing bumble bee, is a little more distracting.  That aside, it is a very nice sounding album.

So I could have heard the dog with just a 272/250and some Tablette 10s. Think of all the money I could have saved if only I’d known. 

I also checked via Spotify and heard via my UQ2 and Neat Iotas but you didn’t want to hear that did you....

What?  I demand a refund.

Oh dear - I have a sinking feeling that I know where this is heading.