Bigman80
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Post by Bigman80 on Dec 6, 2023 11:13:38 GMT
Haha, nothing Rob. As I said, my Kontrapunkt B has dug it's last grove, which means I need a new cart, or a new tip. Having a new tonearm made as the one I had here was destined for a new owner anyway and was only supposed to be here temporarily, but circumstances led to a longer than planned stay. Vinyl is now on hiatus until the new year, so I thought I'd optimise the system for digital and see how that goes. The layout of the system was always done to optimise vinyl, so I thought with the new DACs arrival imminent, it may be nice to give it the best chance of impressing me. Moved stuff around, used shorter mains cables, rerouted other cables etc...lets see what happens. .. good work Olster and phew! for a minute i thought you'd taken leave of your senses....... No, not at all. I've invested far too much time, money and effort into vinyl to totally give up on it, but I can forsee that the main source here will be digital going forward.
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Post by robbiegong on Dec 6, 2023 22:25:27 GMT
good work Olster and phew! for a minute i thought you'd taken leave of your senses....... No, not at all. I've invested far too much time, money and effort into vinyl to totally give up on it, but I can forsee that the main source here will be digital going forward. Same - too much invested, too much a passion, part of my life, music always has been and always will be, hence system joy is a daily. Music and system, like hand and glove. Only difference is vinyl will always be main part of my system. I have too many tunes I love on vinyl, nice to be able to alternate to my fave cds via the PD-91 as they sound great there too, also prolongs the Caddy B FGS's life span, as I'm hoping it will keep going to a time when I'm in a position to replace with a Windfeld Ti.
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Bigman80
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Post by Bigman80 on Dec 7, 2023 0:36:09 GMT
No, not at all. I've invested far too much time, money and effort into vinyl to totally give up on it, but I can forsee that the main source here will be digital going forward. Same - too much invested, too much a passion, part of my life, music always has been and always will be, hence system joy is a daily. Music and system, like hand and glove. Only difference is vinyl will always be main part of my system. I have too many tunes I love on vinyl, nice to be able to alternate to my fave cds via the PD-91 as they sound great there too, also prolongs the Caddy B FGS's life span, as I'm hoping it will keep going to a time when I'm in a position to replace with a Windfeld Ti. Yeah, I get that. I have vinyl that was not transfered to CD, but admittedly not all that much. I have opened up to the world of CD collection, and whilst I now rip everything to .WAV, it's still great fun to collect certain versions of albums. Not to mention finding rarities for £1 because everyone knows CD is dead lol I don't want to pay the modern costs for vinyl replay, for carts, vinyl, or retips for that matter, especially when digital sounds so good here at the moment. I am currently using a Topping E30 MKII DAC. Its superb, and available for less than three pieces of brand new vinyl. Quite sobering when you start looking at the costs. *Weight to stop it from moving ** No audible difference with or without weight.
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Post by jandl100 on Dec 7, 2023 5:38:43 GMT
Oli >>"I am currently using a Topping E30 MKII DAC. Its superb, and available for less than three pieces of brand new vinyl."<< Aha, interesting and Snap!! Topping E30ii in my system, too. I swear it's the best DAC I've heard. I have to confess my curiosity about it was piqued by macca 's enthusiasm. I've spent 20x more for a sound that lacked the sheer transparency and insight of the Topping. .... it fails as a preamp, mind, but as a DAC 👍
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Bigman80
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Post by Bigman80 on Dec 7, 2023 9:41:57 GMT
Oli >>"I am currently using a Topping E30 MKII DAC. Its superb, and available for less than three pieces of brand new vinyl."<< Aha, interesting and Snap!! Topping E30ii in my system, too. I swear it's the best DAC I've heard. I have to confess my curiosity about it was piqued by macca 's enthusiasm. I've spent 20x more for a sound that lacked the sheer transparency and insight of the Topping. .... it fails as a preamp, mind, but as a DAC 👍 Well, it's up against stiff opposition today>
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Post by stevew on Dec 7, 2023 9:48:54 GMT
Oli >>"I am currently using a Topping E30 MKII DAC. It’s superb, and available for less than three pieces of brand new vinyl."<< Aha, interesting and Snap!! Topping E30ii in my system, too. I swear it's the best DAC I've heard. I have to confess my curiosity about it was piqued by macca 's enthusiasm. I've spent 20x more for a sound that lacked the sheer transparency and insight of the Topping. .... it fails as a preamp, mind, but as a DAC 👍 Well, it's up against stiff opposition today> Well..now it gets interesting!
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Post by jandl100 on Dec 7, 2023 10:24:48 GMT
Oli >>"I am currently using a Topping E30 MKII DAC. Its superb, and available for less than three pieces of brand new vinyl."<< Aha, interesting and Snap!! Topping E30ii in my system, too. I swear it's the best DAC I've heard. I have to confess my curiosity about it was piqued by macca 's enthusiasm. I've spent 20x more for a sound that lacked the sheer transparency and insight of the Topping. .... it fails as a preamp, mind, but as a DAC 👍 Well, it's up against stiff opposition today> Yeah, shoot out, shmoot out. I get it, but if a component is good, it's good. I think you can get to a level of quality where it becomes about "am I engrossed in the music?". If the answer is Yes then further improvements or changes can be interesting or enjoyable, but not necessarily essential. I've a gut feeling that there is a distinction here between pure electronics (dacs, amps) and transducers (speakers, phono cartridges, headphones). I guess it's because transducers are more difficult to get to be accurate, so they are inevitably further from the truth and it's then more crucial to pick your own bundle of preferred compromises.
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Post by firebottle on Dec 7, 2023 11:01:12 GMT
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Bigman80
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Post by Bigman80 on Dec 7, 2023 14:10:26 GMT
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Post by misterc on Dec 7, 2023 15:41:45 GMT
Oli, share those inital thoughts now.....................
Oh and the fuse lol
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Bigman80
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Post by Bigman80 on Dec 7, 2023 16:04:23 GMT
Oli, share those inital thoughts now..................... Oh and the fuse lol
Initial thoughts are VERY initial as i only had an hour with it before work and it was FREEZING cold when it got here. So, i played Lambchop - The Saturday Option, and the wife came in ....Conversation occurs: Wife: "is this your new DAC?" Me: "yes, why?" Wife: "it sounds Sh#t" Me: "..........er" Wife: "Well it does! I have heard better in here" Me: " What's wrong with it?" Wife: "It's all at the top (HF). I am having to try and hear the bottom (LF) and i shouldn't have to try and hear it, therefore it's Sh#t" Me: *stunned* But she wasn't wrong. It was toppy and lean, and hyper detailed. I explained that it was absolutely frozen, and that i was only making sure it was working. She said "you might want to get your old one back (Aqvox) lol" I swapped some cables and went to AES for the link between X50D and Mutec and CA OCC copper RCA to BNC for the link between Mutec and DAC and left it for 90 minutes to warm up. When i came back, it was MUCH improved. the LF had filled out, and passed the wife test for LF, but she remained unconvinced. As i listened, it started to open up. Soundstage expanded significantly and i was starting to get some atmosphere and "mood" in the music i listened to. Unfortunately, thats as far as i got today. I played Ike Quebec whilst i got ready for work and i have to say, it was starting to sound like something i *Want* to listen to again. I was a bit relieved, but i know DACs can be a little funny until they have warmed up. I'll do a full write up, but by the time i left for work, it was starting to sound WAY better.
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Post by misterc on Dec 7, 2023 16:06:01 GMT
Sriously it will takle a good 24 hours to come really on song Oli especially if its been in an aircraft hold, any form of r2r has to be left on on 24/7 hence why the wadia dacs have no on/off switch lol
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Bigman80
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Post by Bigman80 on Dec 7, 2023 16:11:10 GMT
Sriously it will takle a good 24 hours to come really on song Oli especially if its been in an aircraft hold, any form of r2r has to be left on on 24/7 hence why the wadia dacs have no on/off switch lol I absolutely understand T, and it was starting to show signs of life, but it wasn't great straight out of the box lol. It will be on for 24/7 and i'll give it a workout over the next few days. I just need to get my AES cable back for a full loom now... stevew
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Post by misterc on Dec 7, 2023 16:52:28 GMT
Serious Oli when I bought my first wadia serious we thought we had made a mistake and everyone one like, just wait you'll see. "After many months of searching I stumbled across a nice condition 8 transport and 15 dac from the US a deal was struck, funds exchanged and the week long wait for Fed-ex to deliver the eagerly awaited cargo. The pair arrived on bloody awful wet and windy Tuesday in February 2002 (how can you be so accurate I hear you ask?) simple the delivery date label is still on the box!!! Work was ‘postponed’ that afternoon as more important matter needed to be attended to. The moment was finally here, the big switch on (even at work we had a pair of Linn Kabor’s which were quite passable at the time, well I was informed of this!) just before I plugged the mains lead into the dac, remembering a small matter of voltage difference. Back then Wadia had designed their equipment to work world wide by the use of a very simple idea. In the IEC plug area was a sliding piece of Perspex which contained the fuse section but also a small printed circuit board that was multi sided and reversible, so you just selected the appropriate voltage printed on the circuit card! Hey presto and the little red LED illuminated (no on/off switch, much to mundane for Wadia in those days!), Next up the Wadia 8 Transport the screen initialised, about to hit the eject button and the screen just faded away, like Labour’s Brexit policy after Corbin took the hot seat.A few expletives’ were cast about the establishment at the juncture in time I might add. After a couple hours, an investigation revealed a small piece of debris had come loose in transport and cause a dead short in the main power supply.
Now around 6pm and the big moment arrived, all systems go and wait for it, Arhhhh what a averagely disappointing sound, at that point you could be forgiven that Naim actually made quality sounding equipment. Feeling somewhat dejected and wondering if an apparition of “Arthur Daley” was about to appear and utter those immortal words “You’ve been done my son”
Work had dictated that a customer site visit was now impending so we did not return to the scene of the crime for a few days.
In the magazines and on the US forums (Audiogon etc) Wadia’s bugbear was feverishly discussed, concerning the amount of warm up time required before Wadia’s came fully on song, I had taken this with a large pinch of CJ Ross."
Well I had to eat humble pie, blow me if they really do take a sodding eternity to really warm up. (The clue came later that year when I took a soldering iron to the dac in anger) All of the power supply regulators are bolted to heat sink blocks mounted directly to the chassis coupled with Wadia’s not inconsequential current draw simply means until the full chassis gets luke warm then it sounds pretty normal in every sense of the word and pretty sure that many a Wadia owner will testify to this.
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Bigman80
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Post by Bigman80 on Dec 7, 2023 16:55:47 GMT
Ah, ok....that starting to make some sense then.
I am not overly concerned having owned R-2R DACs before, but I was hoping to be blown away straight out of the box....should have known better.
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Post by misterc on Dec 7, 2023 17:38:33 GMT
A good r2r has to be left on all of the time, it is purely to do with the stabiliation of the ladder voltages which is critcal.
The PCM 1704 have a pair of ladder dac's inside each chip both 23 bit each.These are summed in a complimentry configuration, this in turn delivers an extremely linear output. Both of these internal dac's share a dedicated refernce and servo drive in a single ladder formation for the bit current sources. (which is one of the key to why it takes forever to seriously wake up)
The R-2R ladder section in these chips makes use of a dual balanced current segments which is an ideal way of ensuring ideal tracking under all conditions (especially around the bi-polar zero point crossing) By interleaving (time multiplexing a parallel array of indentical dac's or adc's this is done to produce a net higher sample rate) the individual bits of each DAC and employing precision laser-trimming of resistors, this way an extremely accurate match between the two DACs is achieved.
So this is why r2r dacs are reliant on having very accurate and EQUAL supply rails.
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Post by mikeyb on Dec 7, 2023 17:58:01 GMT
Watch out, she'll want that framed 😉😂
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Bigman80
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Post by Bigman80 on Dec 7, 2023 18:36:53 GMT
A good r2r has to be left on all of the time, it is purely to do with the stabiliation of the ladder voltages which is critcal. The PCM 1704 have a pair of ladder dac's inside each chip both 23 bit each.These are summed in a complimentry configuration, this in turn delivers an extremely linear output. Both of these internal dac's share a dedicated refernce and servo drive in a single ladder formation for the bit current sources. (which is one of the key to why it takes forever to seriously wake up) The R-2R ladder section in these chips makes use of a dual balanced current segments which is an ideal way of ensuring ideal tracking under all conditions (especially around the bi-polar zero point crossing) By interleaving (time multiplexing a parallel array of indentical dac's or adc's this is done to produce a net higher sample rate) the individual bits of each DAC and employing precision laser-trimming of resistors, this way an extremely accurate match between the two DACs is achieved. So this is why r2r dacs are reliant on having very accurate and EQUAL supply rails. Great info, T. The PSU in this thing is seriously well done. I am impressed, even if i am already seeing components that can be improved lol
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Post by macca on Dec 7, 2023 18:38:43 GMT
in almost 40 years I've never once had something that sounded crap to begin with but became good after warm up, burn in, whatever.
Not speakers or electronics.
I'm highly sceptical the idea that R-2R DACs need to be left on all the time to work properly, didn't seem to apply to all those old CD players that used them though?
Not sure I would buy anything that compromised. If it were the case.
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Post by misterc on Dec 7, 2023 18:46:28 GMT
Hey Macca
***Admin Edit***
It happens no question
Game over
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Arke
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Post by Arke on Dec 7, 2023 18:59:35 GMT
in almost 40 years I've never once had something that sounded crap to begin with but became good after warm up, burn in, whatever. Not speakers or electronics. I'm highly sceptical the idea that R-2R DACs need to be left on all the time to work properly, didn't seem to apply to all those old CD players that used them though? Not sure I would buy anything that compromised. If it were the case. Come and listen to a brand new pair of Vaders vs my run in pair (early next year). You may be rather shocked by the difference the run in makes! Even my (non hifi inclined) friends were shocked by the difference.
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Bigman80
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Post by Bigman80 on Dec 7, 2023 18:59:39 GMT
in almost 40 years I've never once had something that sounded crap to begin with but became good after warm up, burn in, whatever. Not speakers or electronics. I'm highly sceptical the idea that R-2R DACs need to be left on all the time to work properly, didn't seem to apply to all those old CD players that used them though? Not sure I would buy anything that compromised. If it were the case. Yeah, fair enough Macca. However, my experience has been a little different to yours, so in time honoured fashion...I'll wait and see.
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Post by macca on Dec 7, 2023 19:24:11 GMT
in almost 40 years I've never once had something that sounded crap to begin with but became good after warm up, burn in, whatever. Not speakers or electronics. I'm highly sceptical the idea that R-2R DACs need to be left on all the time to work properly, didn't seem to apply to all those old CD players that used them though? Not sure I would buy anything that compromised. If it were the case. Come and listen to a brand new pair of Vaders vs my run in pair (early next year). You may be rather shocked by the difference the run in makes! Even my (non hifi inclined) friends were shocked by the difference. your using brand new drivers out the box - if you buy a loudspeaker it's already been tested at the factory so the drivers already have time on them. Do you blind test between the two pairs or does everyone know which is new and which is run in? I wouldn't be shocked by a fairly small difference, I would by a large one. But what's small and what's large is subjective.
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optical
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Post by optical on Dec 7, 2023 19:34:23 GMT
Come and listen to a brand new pair of Vaders vs my run in pair (early next year). You may be rather shocked by the difference the run in makes! Even my (non hifi inclined) friends were shocked by the difference. your using brand new drivers out the box - if you buy a loudspeaker it's already been tested at the factory so the drivers already have time on them. Do you blind test between the two pairs or does everyone know which is new and which is run in? I wouldn't be shocked by a fairly small difference, I would by a large one. But what's small and what's large is subjective. Martin, I know it irks you terribly and I'm sure there's barely a single person here that isn't aware of your view of this, but there really is no need to hold every single subjective opinion to account. No one is on trial here, not will they be, ever, for giving their honest opinion.
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Post by macca on Dec 11, 2023 11:41:42 GMT
your using brand new drivers out the box - if you buy a loudspeaker it's already been tested at the factory so the drivers already have time on them. Do you blind test between the two pairs or does everyone know which is new and which is run in? I wouldn't be shocked by a fairly small difference, I would by a large one. But what's small and what's large is subjective. Martin, I know it irks you terribly and I'm sure there's barely a single person here that isn't aware of your view of this, but there really is no need to hold every single subjective opinion to account. No one is on trial here, not will they be, ever, for giving their honest opinion. It does not irk me in the slightest and I'm amused that you think I am putting anyone 'on trial'. I was not the one who offered this comparison as evidence of some objective truth about driver break in. I just asked a simple question about the methodology of the comparison. As I'm sure you're aware impressions from sighted comparison can be affected by bias. Just wanted to know if that was controlled for. If it was then I would regard the comparison as valid evidence. If not, then it carries less weight for me.
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optical
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Post by optical on Dec 11, 2023 11:53:36 GMT
Martin, I know it irks you terribly and I'm sure there's barely a single person here that isn't aware of your view of this, but there really is no need to hold every single subjective opinion to account. No one is on trial here, not will they be, ever, for giving their honest opinion. It does not irk me in the slightest and I'm amused that you think I am putting anyone 'on trial'. I was not the one who offered this comparison as evidence of some objective truth about driver break in. I just asked a simple question about the methodology of the comparison. As I'm sure you're aware impressions from sighted comparison can be affected by bias. Just wanted to know if that was controlled for. If it was then I would regard the comparison as valid evidence. If not, then it carries less weight for me. . . . . okay. Also: I take your points (genuienly) however I think there may be some slight difference of opinion (in regards to any required 'control' of claims made) between a DIY community (albeit a very reasonable and keenly priced one) for services, and a retail venture requiring full accountability, proof, verification etc. I think that's where the disagreements are born.
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Post by macca on Dec 11, 2023 12:52:08 GMT
It does not irk me in the slightest and I'm amused that you think I am putting anyone 'on trial'. I was not the one who offered this comparison as evidence of some objective truth about driver break in. I just asked a simple question about the methodology of the comparison. As I'm sure you're aware impressions from sighted comparison can be affected by bias. Just wanted to know if that was controlled for. If it was then I would regard the comparison as valid evidence. If not, then it carries less weight for me. . . . . okay. Also: I take your points (genuienly) however I think there may be some slight difference of opinion (in regards to any required 'control' of claims made) between a DIY community (albeit a very reasonable and keenly priced one) for services, and a retail venture requiring full accountability, proof, verification etc. I think that's where the disagreements are born. On the contrary Arke backs up his claims regarding the quality of his products with measurements - which is a damn sight more than 90 percent of commercial speaker manufacturers do. Just occurred to me but if you look back through the thread it was Arke who was challenging my subjective impression (That I have never heard any device improve with break in). So who's zooming who?
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Post by stevew on Dec 11, 2023 13:01:41 GMT
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optical
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Post by optical on Dec 11, 2023 13:08:17 GMT
. . . . okay. Also: I take your points (genuienly) however I think there may be some slight difference of opinion (in regards to any required 'control' of claims made) between a DIY community (albeit a very reasonable and keenly priced one) for services, and a retail venture requiring full accountability, proof, verification etc. I think that's where the disagreements are born. On the contrary Arke backs up his claims regarding the quality of his products with measurements - which is a damn sight more than 90 percent of commercial speaker manufacturers do. Just occurred to me but if you look back through the thread it was Arke who was challenging my subjective impression (That I have never heard any device improve with break in). So who's zooming who? Agreed, but with that in mind it just proves how incredibly easy it is to get something skewed a little out of context? My point was more of a general one that inside our hobby it's okay to not be expected to qualify subjective opinions/impressions and indeed beliefs, with anyone's yardstick of objectivity. Although, I concede there must be some semblance of logic to back up certain claims. I think you could argue until the cows come home regarding folks challenging another's impression with a 'never heard it myself' one, but it certainly doesn't mean you're wrong. In fact, it backs up the requirement for a balance of both subjective and objective to land at a sensible conclusion. Certainly it's a useful way to evaluate the equipment in question. Of course people will place more stock in one than the other and I strongly agree that 'some' of these subjective impressions regularly stray into an area that is a bit loose with facts. I'm not furnished with enough hours to thumb back through various threads but I take your point on the above. Although I'm sure I've contradicted myself many times in the past . . . . I could attribute that to a growth in knowledge but it's more likely an increase in pessimism . . .
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optical
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Post by optical on Dec 11, 2023 13:11:44 GMT
I hear you, but I don't think it's anyone's intention to rake over old ground. I'd be surprised if we weren't all on the same page now . . . . as long as Oli doesn't mind a few entries in his blog covering it. Onward.
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