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#72955 - 2008-04-21 06:42 Sonos upgrade
Registered: 2006-01-05
Posts: 104
DaveG Offline
Hitchhiker
DaveG Offline
Hitchhiker

Registered: 2006-01-05
Posts: 104
Loc: Portland, Oregon, USA
since a number of us use Sonos products within our Meridian systems, I thought the following might be of interest. I have not yet upgraded my ZP 80 but will probably do so...

http://cls.audiogon.com/cgi-bin/cls.pl?dgtlconv&1212889261

The Sonos system is a wonderful wireless digital system to move music from your computer around the house. Audiophiles have asked us to help make the ZP-80 digital receiver truely high end.

Our SONOS reclocker upgrade is now available. This upgrade entirely replaces the mediocre Cirrus Logic CODAC and the associated high jitter clocks used in the Sonos ZP80. The mod was designed to integrate the SONOS system into a high end audio system thru an outboard Digital to Analog Converter.

The mod was designed by Cullen Circuits in California.

The upgrade consists of installing a new custom Cullen Circuits designed pc board that contains:
1) A high end sample rate converter made by TI
2) A low jitter clock with less than .5ps jitter
3) A low noise power supply for the clock
4) A new micro processor
5) Input & output digital buffers.
6) New upgraded RCA output jacks are added.

This new custom board is installed into the SONOS and directly converts the I2s into 96k up-sampled SPDIF. This new ultra clean low jitter signal is now available thru both the Coax and optical digital outputs. The SPDIF output`s sample rate can also be factory configured to 48k, 96K or 192k.

The sonic benefits are quite dramatic. An entire level of low level grunge (hash) is removed from the sound. This improves the low level detail and imaging. The bass is now much tighter and controlled. Inner detail and transient attack are bothy greatly improved.

The upgraded ZP 80, in the Cullen reference my system, with streaming lossless Ripped CD`s, over his 100 MBPS network, is now a true high end source.

We accept Visa and MasterCard as well as money orders. Read our AudiogoN #1 rated feedback and call 770-667-55633 to order a unit or get your ZP-80 modified.

Prices
$550.00 + frt. to your ZP-80
New ZP-80`s are available fully modified for $890.00 + frt.

Link to more info http://www.underwoodhifi.com/

a reply to my question on extending the 'word length' of the sonos to 24 bits going into my 518...

Dave, Stock ZP-80's outputs 16 bits @ 48k. It cannot go more than 16 bits. We can make it 96K in the mod or 192k for that matter. We feel 96K sounds best. The mod should work in any situation where you run the ZP-80 digital out into a DAC.

It dramatically lowers jitter and gives you smoother midrange more, more transparency and better low level resolution.


  • Sys 1 PS Audio PerfectWave DAC/Wyred4Sound STP-SE/ATC SCM50SL AT
  • Sys 2 501/M20's
  • Sys 3 201/204/207/205/Niles
  • Units sold: 502/504/518/555/551
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#73034 - 2008-04-22 11:54 Re: Sonos upgrade [Re: DaveG]
Registered: 2006-07-21
Posts: 53
Ivan FX Offline
Mostly harmless
Ivan FX Offline
Mostly harmless

Registered: 2006-07-21
Posts: 53
Loc: Moscow
i do not have that upgrade and that is why:

- stock output of ZP-80 is 44.1 kHz (as CD default).
- Cullen's board resamples to 48 kHz or 96 kH. they can't do 44.1 kHz because they have no respective clocks in stock.
- resampling from 44.1 to 48 kHz is bad thing degrading sound quality.
- my G68 upsamples to 24/96 kHz and i belive does it better than Cullen's board. i don't want to lose it. And i don't think that double upsampling is good thing.

my opinion: Cullen's board could be nice upgrade for folks with regular DACs with 16/96 input. With Meridian i want high-quality 16/44.1 output.

P.S. got myself Stereovox XV2 digital cable - very nice sound upgrade over other digital cables i have (Ixos, Monster, Wireworld). I believe that's because XV2 is true 75 Ohm including connectors (which is rare).


G68ADV, 2x DSP420, 2x G57, McIntosh C2200 preamp, Vandersteen Quatro, Sonos with Empirical Audio Pace-Car, Chord DAC64 mkII, Martin Logan Descent
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#73035 - 2008-04-22 11:58 Re: Sonos upgrade [Re: Ivan FX]
Registered: 2004-04-15
Posts: 12,408
VirusKiller Offline
Don't Panic
VirusKiller Offline
Don't Panic

Registered: 2004-04-15
Posts: 12,408
Loc: nr. Milton Keynes, UK
Originally Posted By: Ivan FX
- resampling from 44.1 to 48 kHz is bad thing degrading sound quality.
I believe this depends on how it's done (I'm sure Meridian would give it a good go!), but in general not ideal.
Quote:
- my G68 upsamples to 24/96 kHz
Meridian sticks to an integer multiple and upsamples 44.1kHz to 88.2kHz.


Roon Developer and ex-moderator of this Forum
I am #25 in the HH1 photo of fame.
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#73481 - 2008-05-03 06:53 Re: Sonos upgrade [Re: VirusKiller]
Registered: 2004-04-20
Posts: 452
Jdb-si Offline
Paranoid android
Jdb-si Offline
Paranoid android

Registered: 2004-04-20
Posts: 452
Loc: New Jersey, USA
I've thinking about getting some type of device- Sonos, Apple TV, Squeezebox, etc to listen to the music on my computer through my system. I was at Best Buy this evening, and I saw a Sonos set-up. I asked the salesperson about the Sonos, but he didn't have clue and the unit on display was broken.

I have a Mac Powerbook G4 and a G68. I don't have a network at home (I use the internet at school). I was thinking about just getting an airport express and running the digital out from that into the G68. Does anyone use airport express with a notebook computer into their system?


John


Theater: G68, G98DH, DSP6k, DSP55kC, SW1600x2, DSP55k, Plasma, (Zone 2)
Living room: DSP5k, DSP52kC, SW1600, G68, Sooloos MC600 (Zone 1)
Bedroom: M80
office: SACD, 861v4, DSP6k (Zone 3)
Storage: P350Ws, G55s, M33s, DSP33s, DSP5k, 501, 518, 561
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#73493 - 2008-05-03 11:21 Re: Sonos upgrade [Re: Jdb-si]
Registered: 2000-05-28
Posts: 8,667
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,667
Loc: Northeastern, USA
From my understanding upsampling from 44.1 to 48 or 96 can be done but requires a lot of horse power to do so.

Since G68 dejitters and upsamples more conservatively to 88.2, I suspect your better off staying stock.


- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2
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#73978 - 2008-05-15 23:36 Re: Sonos upgrade [Re: Fiddler]
Registered: 2006-01-05
Posts: 104
DaveG Offline
Hitchhiker
DaveG Offline
Hitchhiker

Registered: 2006-01-05
Posts: 104
Loc: Portland, Oregon, USA
so... if going from 44.1 to 48 kHz per the cullens upgrade is sonically not the way to go.. is my best solution the one i am currently using:

sonos digital out to a Meridian 518, coax out to a Meridian 203 then into a Meridian Pre amp? Is this the best solution and just avoid the upgrade path all together then?


  • Sys 1 PS Audio PerfectWave DAC/Wyred4Sound STP-SE/ATC SCM50SL AT
  • Sys 2 501/M20's
  • Sys 3 201/204/207/205/Niles
  • Units sold: 502/504/518/555/551
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