If sound quality was the only criteria the SB Touch would be stunning value for money but unfortunately usability and fit for purpose must be included in the equation.

The display is rather pleasant if a little slow; but only works well within a narrow vertical viewing angle. That angle is often wrong unless one is standing, and who stands to listen to music? It needs an adjustable rear stand.

So far 24/96 is far too unreliable. It might play it, might stutter. Not good enough. The Squeezebox forums are full of the problem and possible solutions but none has worked 100% for me.

Connecting up an external 500GB portable drive with a power supply has so far been an unrewarding experience. I’m struggling to get it to scan the drive fully and so far I’ve only managed to play about a tenth of one track.

So if the decision was based on the sound quality of CD rips from the digital output it would be a clear winner. Overall it needs more work or I need to understand more about how to get the best from it.

More in another week or so.

I ordered my Touch on the 26th October 2009 to take advantage of the 20% off for early orders offer. Delivery was expected imminently. Only one email since then – on 4th March – to warn of a delay until April-May. Another 20% offer “as a small gift” but no apology. A simple ‘sorry for the delay we are working on getting it right before launch’ would have gone a mighty long way.

I know there is a Squeezebox forum and maybe Logitech thought that was a reason not to keep me up to date – but it’s not. A few emails would have made me feel much happier with Logitech. If I hadn’t known friends with beta units, who were pleased with the performance, I would have cancelled my order months ago.

Anyway it’s arrived and very nice it is too. It’s been running overnight using the standard supplied PS and I’ve recently changed over to the Maplin linear PS as much for my piece of mind as any sonic reason. There is a small difference but not enough to rush to the shops.

What does it sound like? OK, I suppose, is all I can report so far. I’ve only tried the optical and coaxial digital outputs running into a Naim DAC with 555 PS. It has an edge to the sound that sneaks its way on to every song. It’s a slight hard lispiness to vocals that accentuates the lips and teeth sounds. Coax digital sounds substantially different from Optical – surprisingly different in fact.

It’s way too early to form any sensible conclusions. It’s certainly excellent value; just don’t know how excellent yet. More in a week or so when it has run in.

In the meantime…

More information and images

This is the first major revision for this product in over 7 years. This takes the CDX2 into new markets delivering greater performance and far increased flexibility. The price remains the same.

The new version CDX2 adds a switchable S/PDIF output on a 75 Ohm BNC connector for the correct impedance match.

More information about the Naim DAC

More Details

Next week I’m in Munich for the High End show and by coincidence will be sharing a booth (or to be more exact one of my clients Thorens is sharing a booth) themed Sources of the Future – as it’s vinyl and streaming – with Higoto who are Germany’s streaming experts.

The demos will be of Thoren’s new Tri-Balance turntable, the Logitech Transporter and a Macbook running iTunes with the Amarra software into a Weiss DAC.

Should be very interesting.  It’ll bring out all the digits is digits posts again, especially as Amarra is around $1500.  That means the price of Mac Book Pro , Amarra and DAC will be around £5-6k.  Cheaper than my CD player. But will it deliver as much?

Will it be fabulous hi-fi or fabulous music?

If only it were that simple to get a great sound from CA.  The more I experiment the more I realise that CA is absolutely similar to analog audio or indeed any audio when taken seriously.  Every change is audible. Assuming one has a good enough system.

Of course, just because a change is audible doesn’t mean it matters.

The expression bandied about on forums about Computer Audio is bit transparent.  The theory is simple: it’s getting the bits from the Hard Drive out of the computer without them being manipulated/changed in any way.

I’ve tried many music playing apps and they all seem to sound subtly different.  Even different releases of iTunes are reported to sort different.  Life is far to short to bother to try different releases.  As they say, I tried it once and didn’t like it.

For convenience for quick playback I tend to use VLC www.videolan.org.  It seems to play almost everything audio and video and can even stream stuff over  my network.  It works well for Radio Paradise too.

If I want to get serious say when I’m comparing DACs I tend to use Foobar.  It’s not my favourite user experience but it is easily configurable. For use under Win XP it’s possible to use the ASIO add in to bypass the K Mixer (assuming you have a suitable sound card). I use the M-Audio Transit. For Vista the WASAPI add in also bypasses the Windows (Kernel Mixer aka K Mixer) mixer.  With volumes set at 100% one should be achieving bit transparency and the sound should be just that little bit cleaner, less splashy and the space between notes will be greater somehow.

CA still never gets truly close to good CD playback.  Not yet for me anyway.  And it’s not ’cause I haven’t tried hard.

It’s a bit simpler with a Mac (the classic Mac and a DAC route) assuming you remember to set the right bit depth and bit rate in the Midi settings but I can’t say it sounds any better.

Using track 7 , The Chain, showed the original as having a slightly ‘sharper’ delivery, more detail perhaps but certainly less music. The main difference was in the low end but this changed the overall presentation. The Maplin just delivered more music but in a controlled and balanced manner.

I then dug out the 500VA transformer I’d tried before – now in an aluminium box and with a ferrite on the output – in common with the original Dacmagic’s supply.  This PS delivered more power to the presentation, more extension apparently  but was slightly slower. It had better separation of instruments, but not really more music.

The more comparisons of power supplies I do with the Dacmagic the more impressed I am of the overall balance of the design.

I will carry on using the Maplin PS.  It is easier to hide away, as it isn’t a walwart, and more importantly it improves the performance making it just that little more balanced and even handed.

The music playback system was a HP2133 netbook running Foobar and ASIO drivers connected by USB2 to a M-Audio Transit sound card which was connected with a  Chord Optichord to the Cambridge.

I’ve picked up one locally so reports of some listening results very soon.

Sound quality is generally rather good.  Good in a bandwidth limited, obviously live but solid sort of way, but one recording did sound as if it was made of a fluttery cassette.

I played it back from my HP2133 into a M-Audio Transit into my Behringer SRC2496 upsampling to 24/88 all feeding my Naim system.  Maybe a bit OTT but well worth the effort.

Thanks to John Atkinson, editor of Stereophile mag for bring this superb resource to my attention

Highly recommended

Theory one, is that it’s possible to get good sound from a computer feeding a DAC.  The debate tends to be as much around whether a Mac is better than a PC as a source as which DAC is ideal.  The general feeling seems to be that a Mac Book with a DAC costing around a £1k is cable of delivering better sound that a serious or very serious CD Player.  I agree a Mac and a DAC is cable of delivering a very good sound – but not a great one.  The Mac/DAC to my ears delivers a polished performance with poor dynamics downwards and little soul.  A great CD player adds back the soul, and reaches down into the quiet to somehow increase the space between the notes.  I’m sure it is possible to get a great sound from a ‘puter but it am sure it’s going to take a bit more effort than just plugging a DAC on to the output of a Mac.

Theory two, is that if a rip is perfect it should sound the same as another perfect rip of the same CD.  Seems pretty logical to me but somehow it doesn’t seem to be the case.  Listening blind and sighted to different rips which are identical, according to CRC and EAC’s file compare, they seem to sound different.  Consistency of results leads me to believe I’m not fooling myself.  Now, don’t expect these differences to be huge and obvious.  And don’t expect these to hear differences unless you have a revealing system and time.  If you have both and are willing to try a few rips then relax and let the tracks play through and observe your reaction to each track from an emotional level.  You need to be relaxed and not trying too hard – tension and stress are great ways of hearing less. When last trying this blind Malcolm Steward and I found differences in the rhythm of the track.

My conclusions are the same as usual with serious hi-fi.  The more I understand the more I realise I don’t know.

I restored my second generation 8Gb Nano so I would have “uncontaminated” storage. It’s now loaded with all the wav rips.

I listened to the digital output of the Wadia connected to the Behringer SRC2496 via a Chord Signature Digital Cable.

Performance using the Behringer was absolutely ideal for dinner parties and background music. There was absolutely no chance of anyone being dstracted by any emotion from the music. The best results were with the Behringer upsampling to 24Bit 88.2k before doing it’s D to A conversion.
I was a bit concerned that the results I heard were so far from what I have read in some magazines’ reviews so I connected the same digital cable to the Naim HDX as a source and using the same rips all the passion and feeling of the music was restored.

Well, what does that mean?  I guess it says that the 170iTransport works in some systems and not in others.

This by the way is not the way to do something for long-term use.  This is just as a quick test to see if it’s worth experimenting further and if the results are good the tranny will be mounted in a decent case suitably fused. This is not the type of experiment I suggest for anyone outside of a lab.  The mains is dangerous.

The listening results today are different to those at Malcolm’s last evening.  There it was pretty conclusive that the new supply confused the balance and lost some integration. It wasn’t bad at all, just not quite as well balanced as the original supply.  Shows that Cambridge put some time and effort into the whole package.

Today and in my system the results aren’t quite so clear cut.  There are elements of the same as last night but at the same time the system with the experimental tranny has more drive, is a bit more dramatic on the dynamics front and makes my foot tap more.

It’s really very track dependant: a couple of Paul Simon tracks definitely favoured the larger supply, a Springsteen just showed off the slight forwardness the supply delivered and sounded harsh. Another Springsteen – I’m on Fire – worked.

Would I recommend trying a supply if it were available on some try before buy deal – yes – but only if it were a no strings try before buy deal.  I’m sure that with the, very justified, success of the Cambridge DacMagic there will quite a few companies offering upgrade power supplies.

Finally it might be worth noting that the cost of the transformer delivered was around £35 so it might easily be a £100++ power supply if sold online and all neatly packaged.  Quite a investment for a budget DAC even if it’s a great budget DAC.

Hope to add the necessary connections to do the first listening tests tomorrow – more then.