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Thread: Grounding boxes - The real deal

  1. #411
    Join Date: Jan 2008

    Location: Winchester, Hampshire

    Posts: 282
    I'm Steve.

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    Quote Originally Posted by CageyH View Post
    Without hearing the effect of these boxes, I have to say that the price for me is off putting.
    £2800 for a box, and around £600 a cable. That is more than the majority of my boxes with electronics in the cost.

    Sure I understand that he has to make money. It just won’t be mine....

    I think the wife would divorce me if I bought a £2800 box and 5 cables at £600 a pop. Almost £6k for an improvement is sound quality? It would have to be massive to warrant that kind of expenditure.
    Kevin

    The £2800 RTZ3 is the top of the range Coherent grounding box and can accept a total of eighteen cables.

    This particular box is of interest to me and others who own systems with a large number of vacant connections (BNC, RCA, XLR, USB etc).

    Believe me, there are a phenomenal amount of vacant connections on a four box dCS Vivaldi digital system that would benefit from having pairs of ground planes tied together.

    Thos who own simpler systems, with say a streamer or CD player/DAC and an integrated amp, will likely choose a smaller RTZ box (£800 for six connections and £1600 for ten connections) The cables also start at £250, so no need to pitch in at the CR level (£600).

    Tony has a clear upgrade path with generous trade-in for those seeking to upgrade at a later date.

    I don't know.nor do I care whats in the box, or how it works. My ears tell me that there is a substantial improvement in sound quality.

    Those who have posted that small "cottage industries" like Tony's, need to make a profit to survive and flourish are correct.

    Coherent RTZ products are hand-fabricated and this takes a lot of time and effort, never mind the research and testing that goes to develop and bring a product to market.

    The fit and finish of both boxes and cables are of a very high standard.
    Steve.

    My System:- dCS Vivaldi Transport + dCS Vivaldi 2.0 DAC + dCS Vivaldi Master Word Clock + dCS Vivaldi 2.0 Upsampler, Melco N1ZH60/2 Digital Music Server/Streamer, TW Raven One tt/Graham Phantom II/Transfiguration Orpheus L, Whest PS.30RDT SE, Conrad Johnson GAT Series 2 preamp, Conrad Johnson Premier 350SA power amp, TAD CR-1 MKII loudspeakers, MIT Oracle MA/MA-X interconnects, MIT Magnum MA speaker cables, Tellurium Q Black Diamond USB cable, Tellurium Q Ultra Silver power cords, Ziro Disclosure & Vertex Roraima Hi-Rez power cords + Furutech FI connectors, Stillpoints ESS racks/component stands, Vertex Aletheia PSU2 balanced power supply, Coherent Systems RTZ3 ground box + CR/BD cables, Acoustica Applicata DaaD room treatment, dedicated mains.

  2. #412
    Join Date: May 2012

    Location: Pastures new

    Posts: 4,721
    I'm Nobody.

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    As long as you are happy, that is all that counts in my book.

  3. #413
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 8,373
    I'm Oliver.

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    So, objective think supplied here.

    Tonys top box and cable would set me back £3k (FAS).

    Judging the performance of my own system, and where I judiciously think improvements could be made.

    Would I see a greater improvement in performance from

    A) The TOTL grounding box

    Or

    B) A set of Quadral speakers (£3k worth)

    I would bet heavily that the greater improvement would come from the speakers. However, if you are at that point already, I can see how buying a Grounding Box to improve things further would start to appeal.

    I think the price is relative to your ability to spend at that level. Unfortunately a lot of us will be priced out of this market but that's just how it is.
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
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  4. #414
    Join Date: Oct 2011

    Location: London Town

    Posts: 2,196
    I'm Julian.

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    Quote Originally Posted by Bigman80 View Post
    Unfortunately a lot of us will be priced out of this market but that's just how it is.
    So you have the option of doing a home brew version or trying the Signal Ground Solutions boxes which start at £285.
    The Source - Kuzma Stogi - AT33 PTG/II - Fidelity Research FRT-3 - Conrad-Johnson EV-1 - Consonance Cyber 222 mk2 - Philips DC380 - Shanling CD-S 100 MK 11 - Toshiba ST-420 - Tannoy Chatsworths

  5. #415
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 8,373
    I'm Oliver.

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    Quote Originally Posted by julesd68 View Post
    So you have the option of doing a home brew version or trying the Signal Ground Solutions boxes which start at £285.
    Yup. Looks like that's what's left for us mortals lool
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+ With Allo Boss 1.2 + Isolator.
    Amplification: Nelson Pass DCB1 with Khozmo 48 Step Series Attenuator & Krell KSA100 MK2 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & NEW SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A
    Price List For Cables:https://bit.ly/2Uxiv3j

  6. #416
    Join Date: Apr 2018

    Location: Brighton

    Posts: 44
    I'm Jason.

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    Quote Originally Posted by Mr. C View Post
    Unlike the other grounding boxes that are on the market these use no minerals what so ever or pizeobelectro materials or tormalene etc, no bus bars either.
    Well, looks like we have slightly more to go on now. So it doesn’t follow the same path as Entreq’s products which appear to be filled with a mineral substance. You mention bus bars, I am assuming that your stating that the “grounding points” on your box are not connected/referenced to each other internally? Your product description states this;

    “We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract. Our customer feedback has given mixed results on this method, as some equipment is manufactured with different philosophies regarding earthing and grounding techniques”

    Would this be caused by a ground loop? If so, how? Surely this means that the grounding points on the RTZ box are connected/referenced internally?

    So that leaves us with a passive box, which depending on the construction of the Hifi equipment it is connected to, may or may not be connected to mains earth via the “grounding cables”. I really am scratching my head as to how this would work. The description on your website states that signal grounding requires an extremely low impedance, how does a passive box connected by a single wire even achieve this?

    It also goes on to say this...

    “Drawing from our digital system integrations and aerospace backgrounds where electrical noise is sensitive to measuring and test equipment, these areas are actively and rigorously controlled to ensure accurate operation and correct measurement data integrity.”

    With this background (plus the fact you are designing your own Class D amplifier) I’m sure you would be able to provide some measurements to back up some of the claims that the addition of your RTZ box provides.

  7. #417
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,768
    I'm Tom.

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    Quote Originally Posted by Macca View Post
    I think it's what you do when you are in the enviable position where you have run out of hi-fi equipment to buy before you have run out of money to spend on it. For 99.9 % of us it's the other way round.
    aint that so!
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers with Tannoy ST50 supertweeters; Amp - Silvercore 833C monoblocks; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 9 inch and Ikeda IT-407 12 inch tonearms; Cartridges Stereo - Miyajima Madake, Miyajima Takumi, Ikeda 9TT, vintage Ortofon SPU GE; Mono - Miyajimas - Zero 0.7, Premium 1.0, Miyajima/Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912 + Miyajima ETR-Mono SUT; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Sony TA-F3000ES; Digital: CDP Sony CDP-X3000ES & Arcam rBlink; Vinyl: Technics SL10 with Pickering TL-3.

  8. #418
    Join Date: Jan 2019

    Location: Kent UK

    Posts: 99
    I'm Martin.

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    Ive been following these grounding box threads with interest, saw some reviews on the entreq box months ago and it piqued my interest. Lots of positive reviews out there but also some that didnt notice any real gains like Steve here. I did buy a cigar box and a few other pieces a while back but i never got the minerals

    Then there is this RTZ device which is targetting the same issues via different unknown mechanism with some very happy customers.

    It should be noted that there are other options also out there as well as the nordost offering already mentioned. There is a company ive been reading review of on the audigon forum called perect path technologies that have 3 passive products that also target noise floor and getting rave reviews from many members over there.

    Im convinced there is something in this but i need to rest my wallet for a bit after updating speakers, amp and subwoofer in the last 3 months. Then its working out the better options to try for your own system (im fully digital including the amp here) Interesting stuff though. Will continue to follow with keen interest.

  9. #419
    Join Date: Apr 2016

    Location: Bishops Stortford

    Posts: 724
    I'm Chris.

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    Quote Originally Posted by Snoopdog View Post
    Hmmm!

    Interesting!

    Everything that the grounding box brings to the table has disappeared (to be expected) but I can clearly hear French trawler men talking on their radios!


    Another fine theory bites the dust.
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  10. #420
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 4,775
    I'm Alan.

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    What fine theory?

    All you are doing by just having the cables connected (without the box) is providing an aerial to pick up transmissions.
    The length of cable is what will determine the most likely pick-up, in this case the marine band.

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