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Post by coil on Dec 27, 2012 17:42:21 GMT
Suggestions about good USB cable for Aune T1? It needs to be at least 1,5m long. Or better to go with DIY cable?
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Post by Deleted on Dec 28, 2012 5:12:38 GMT
Suggestions about good USB cable for Aune T1? It needs to be at least 1,5m long. Or better to go with DIY cable? I can't say that I would recommend a DIY cable due to problems getting a correct impedance match. After just a few minutes playing around with this very nicely constructed and attractive little unit, I can say that a short USB cable with the Vbus (red wire) disconnected at the PC end of the USB cable did sound better than when using the longer supplied USB cable, which itself appeared to be quite a bit better quality than most normal USB cables, when playing a 24/192 track from Barry Diament's "Americas" album. Alex P.S. This little DAC/HA also clearly showed the differences between different rips of the same track.   |
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Post by Deleted on Dec 28, 2012 11:12:47 GMT
Yes, I've found that too Alex. Surprising at this level of gear. I forgot that the one going around reached you. You kept that quiet.  I tried John's really short link with it as well and I thought it improved again. It holds its own at the price it sells for. |
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Post by coil on Dec 28, 2012 12:50:57 GMT
Sorry for dumb question but how disconnecting Vbus (red wire) makes it better?
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Post by PinkFloyd on Dec 28, 2012 14:21:20 GMT
Glad it arrived safely Alex  At last, you've got something with a glowing bottle attached to it It should be well burnt in now (hopefully not burnt "out") after all the auditions it has had.... it's also a very well travelled T1.... from China to Scotland to England to Belgium to Australia...... Blimey, I bet it can tell a few stories of it's journeys I love my one, just "plug and play" and it does the rest, couldn't be easier |
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Post by Deleted on Dec 28, 2012 15:12:18 GMT
Sorry for dumb question but how disconnecting Vbus (red wire) makes it better? The idea originally came from avoiding the noisy (fans etc of PC/laptop) 5v feed on the bus line powering the sensitive circuits of the DAC (or whatever). This was then then replaced with a clean, regulated 5v feed. In the case of units that already do not use the USB 5v feed like the T1, the effect can still be heard but avoiding the interference within the cable itself from the 5v line running alongside the data lines. If you can live with a shorter cable that is also preferable. Having personally heard this effect on the T1 itself I can vouch for the improvement even though there are still doubters out there. |
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Post by coil on Dec 28, 2012 15:19:14 GMT
Thanks for explanation! Will chop the Vbus pin at the A plug and go with 1m cable |
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Post by Deleted on Dec 28, 2012 19:40:25 GMT
Yes, I've found that too Alex. Surprising at this level of gear. I forgot that the one going around reached you. You kept that quiet. I tried John's really short link with it as well and I thought it improved again. It holds its own at the price it sells for. Hi Ian Mike had this one forwarded to me from Belgium as a gift  It had a fairly slow trip due to the Xmas rush,but surprisingly arrived yesterday, which was listed as a P.O. holiday with no mail deliveries. It must have been delivered by contractors. What surprised me was that it was able to drive my ATH W1000 headphones without them sounding too "toppy"or sibilant. Regards Alex |
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Post by Deleted on Dec 28, 2012 20:19:28 GMT
Same for the AKG K601, Alex. They sound really balanced from the T1. Yet, I think they have a low output impedance. Valves? |
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Post by Deleted on Dec 28, 2012 20:23:33 GMT
Same for the AKG K601, Alex. They sound really balanced from the T1. Yet, I think they have a low output impedance. Valves? Ian The HA section is solid state,and because it uses a 15-0-15VAC 1A transformer, is likely to have higher voltage supply rails than many other HAs. The valve is used as a buffer stage in the DAC section. Regards Alex |
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Post by PinkFloyd on Dec 28, 2012 20:27:02 GMT
Hi Alex, I know you've just got it but have you tried messing about with the gain switches on the bottom yet? You may need to put your glasses on as they're bloody tiny The HA section has NE5532 onboard..... I dunno if you want to bust the guts open (just yet) but this in an area that can be tweaked, I know you like the LM chips..... maybe try them? There's a knack to disassembly, I'm happy to do a pictorial if you're thinking of cracking into the inner sanctum of the T1 The headamp board is pretty much a "module" that snaps in.... AUNE could probably manage to offer "upgrade" modules (they don't know that yet! ) with different opamps etc. etc. I've got a few SOIC chips and will try them out in the New Year. Nothing wrong with the NE5532 though... a damned good chip in it's day and STILL a good chip today.... the likeliehood of an NE5523 / 4 being in circuit "somewhere" during a recording is VERY high.... it was pretty much THE chip that was used in equipment (and still is!)....... T1 may not be quite as illuminating as some of the DAC's you've got at your disposal Alex but it's a damned good allrounder for the money.... even as a standalone head amp...... a DAC "and" a Head amp? You couldn't come close even if you tried to DIY the same, for the same money. My only gripe is the time it takes before "all systems go!".... seems like ages It's only 30 seconds BUT if you look at it it seems more like minutes. What "tube" are you using with it? Have you tried the 6N23P-EB? So many questions, I know, but I'm sure you'll enjoy answering them I'll fire a few "tubes" down under to you.... you can never have too many, we can maybe discuss the "house sound" of the different valves together? (shit! I meant to say "tube!") |
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Post by Deleted on Dec 28, 2012 20:29:44 GMT
So those digital files will really mellow out if the HA section is mellow .....
Doesn't the sight of that lit up tube give you a touch of nostalgia. Just a touch? Mine is now attached to a Pinkie.
Actually, I have three Aune amps on show at the moment along with the V8. The old ss amp which is great, with obligatory gold knob, the T1 with a gold knob and the S2.
I'm starting to look like an Aune shop. (Not a pawn shop)
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Post by Deleted on Dec 28, 2012 20:36:07 GMT
Guys
I am going early Saturday morning Supermarket shopping in 10 minutes, so I will get back to you.
Alex
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Post by PinkFloyd on Dec 28, 2012 20:44:25 GMT
Ian,
There should be no hum buzz (Humbugs) associated with your Panda..... if you want to send it along with the ipod you can be assured it will return humbug free.......
It's a simple case of adding a few pontefract cakes, a sherbert dip and a couple of flying saucers (remember them?).......
Was your Panda humbugging from day one? You didn't say anything, which is why I am asking? The trimpots (DC offset) may require adjusting.... that was the ONLY thing I didn't like about the Panda, it tended to "drift" and keep on drifting (even with matched transistors)........
Anyhoo, not pertaining to this thread.
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Post by Deleted on Dec 28, 2012 21:08:20 GMT
I'm not certain, Mike. I changed from the K701 which didn't detect it to the Senn HD650 which did, so it could have been there all along or it drifted.
No big deal because it's minimal. I'll leave it for the time being, Mike. In case it gets the eeby jeebies later on.
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Post by PinkFloyd on Dec 28, 2012 21:21:01 GMT
I'm not certain, Mike. I changed from the K701 which didn't detect it to the Senn HD650 which did, so it could have been there all along or it drifted. No big deal because it's minimal. I'll leave it for the time being, Mike. In case it gets the eeby jeebies later on. Do you fancy a pontefract cake? |
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Post by Deleted on Dec 28, 2012 21:55:43 GMT
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Post by Deleted on Dec 28, 2012 22:30:11 GMT
Hi Alex, I know you've just got it but have you tried messing about with the gain switches on the bottom yet? You may need to put your glasses on as they're bloody tiny The HA section has NE5532 onboard..... I dunno if you want to bust the guts open (just yet) but this in an area that can be tweaked, I know you like the LM chips..... maybe try them? There's a knack to disassembly, I'm happy to do a pictorial if you're thinking of cracking into the inner sanctum of the T1 The headamp board is pretty much a "module" that snaps in.... AUNE could probably manage to offer "upgrade" modules (they don't know that yet! ) with different opamps etc. etc. I've got a few SOIC chips and will try them out in the New Year. Nothing wrong with the NE5532 though... a damned good chip in it's day and STILL a good chip today.... the likeliehood of an NE5523 / 4 being in circuit "somewhere" during a recording is VERY high.... it was pretty much THE chip that was used in equipment (and still is!)....... T1 may not be quite as illuminating as some of the DAC's you've got at your disposal Alex but it's a damned good allrounder for the money.... even as a standalone head amp...... a DAC "and" a Head amp? You couldn't come close even if you tried to DIY the same, for the same money. My only gripe is the time it takes before "all systems go!".... seems like ages It's only 30 seconds BUT if you look at it it seems more like minutes. What "tube" are you using with it? Have you tried the 6N23P-EB? So many questions, I know, but I'm sure you'll enjoy answering them I'll fire a few "tubes" down under to you.... you can never have too many, we can maybe discuss the "house sound" of the different valves together? (shit! I meant to say "tube!") Firstly, I didn't need to play around with the DIP switches, because whatever setting Marc had them at, was just about right for me. Personally, I think as far as surface mount chips go, the NE5532 isn't too bad.I prefer the metal can varieties over the DIP8 for their superior thermal management, and possibly also the screening due to the metal can.IF they used DIP 8 NE5532 I may have gone there with an LM4562HA/LME49720HA, but I wouldn't bother replacing SOICs with another SOIC for a minimal gain. I agree that to get the same results with DIY, you would need to spend well over $400, and it still wouldn't look as good as the Aune products ! I forgot about the 30 second delay, and thought it was broken.  Like most men, I guess I am addicted to instant gratification ! I didn't check to see what valve was supplied, as I was too interested in popping it in and getting it going. Rather like a kid with a new toy! I am not sure that I like the white LED illuminating the tube, but I can see why they have done this. It would be nice to see it slowly fade out after the valve is obviously working ? Kind Regards Alex |
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Post by Deleted on Dec 28, 2012 22:36:47 GMT
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Post by Deleted on Dec 28, 2012 23:15:55 GMT
I'm a huge liquorice fan!
I can't get Pontefract Cake here but can obtain a Danish equivalent instead;
Yummy
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Post by PinkFloyd on Jan 1, 2013 21:31:51 GMT
If anyone's interested I've made up a Special Edition T1..... It's "Special" in that it has an aluminium body and a black top plate. It comes with BOTH the EH6922 and 6N23P-EB valves (tubes) This is a total "one off" and therefore "special" Fully tested and ready to go. £175 shipped (UK only)   |
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Post by PinkFloyd on Jan 1, 2013 21:41:05 GMT
Important notice to T1 owners.
I had a look inside one of the mains plugs and AUNE are shipping the T1 with a 13amp fuse fitted. This should be replaced with a 3amp fuse. I will be fitting 3 amp fuses into all the T1's I have left.
It's an easy job to do.... just open the plug up (the centre screw) remove the 13amp fuse and replace with a 3amp type. I'm sure that Alex will confirm this is the correct thing to do and I will also pass my findings on to Aune.
Mike.
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Post by coil on Jan 1, 2013 21:46:52 GMT
Thanks for useful info Mike! Will be getting my T1 on 3rd. Can`t wait to light that thing up! Hope that your tube will arrive at same time ;P
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Post by Deleted on Jan 1, 2013 21:56:22 GMT
Important notice to T1 owners.I had a look inside one of the mains plugs and AUNE are shipping the T1 with a 13amp fuse fitted. This should be replaced with a 3amp fuse. I will be fitting 3 amp fuses into all the T1's I have left. It's an easy job to do.... just open the plug up (the centre screw) remove the 13amp fuse and replace with a 3amp type. I'm sure that Alex will confirm this is the correct thing to do and I will also pass my findings on to Aune. Mike. Mike Even 3A seems to be overkill. The vast majority of 30VA toroidal transformers only require a 0.5A fuse be fitted.I would be surprised if a 1A fuse isn't adequate.I suspect that they supplied this particular plug because it is robust, and what is readily available, not because it had a fuse fitted internally. Kind Regards Alex |
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Post by coil on Jan 2, 2013 20:45:29 GMT
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At last, you've got something with a glowing bottle attached to it 
