Out of the many many different combinations I've had mine hooked up in, not once did I have an issue. I'm talking literally HUNDREDS of different combinations. From computers and my phones/tablets as a source to many different amps, preamps, and even in my cars, not once have I had an issue...

Carefully haha. The OPA2134, to me, sounds MUCH smoother and more detailed than the stock NE5532. The opamp in the main board for the RCA in/out is already an OPA2134 btw. You would need a hot air setup to swap this one though.

Just checking in. I've purchased 50+ other dacs and amps since the old T1 days. I've extensivly compared many many others to the Aune T1. Do some sound better? For sure. But the ones that do are 3-4x the price. I think I prefer the T1 over my Cayin stuff even, like my hotrodded HA-1A and my...

I know I'm digging up an old thread here, but need a bit of help. Just picked one of these up with no tubes. And no labels on which socket is what. Is it front socket 12AX7 2 outside EL84 back socket 12AU7?

You guys still around? If so, still using the T1? Or if not, what did ya'll upgrade to?

You know, I'm 20+ dacs past the 'ol T1 days, and dusted off the old T1 a few days ago and hooked it up. Long story short, I've wasted a lot of money since then. I should've stayed with just this T1 and been happy. Some of the upgrades I bought are without a doubt better, but this 'ol girl just...

Getting my shovel out.... I just picked up a pair of the wired version. These sound absolutely phenomenal to me. They are deff my new go to at work headphones. I also found an AutoEQ profile for them, but it takes a lot of bass out and not nearly as fun sounding. Are they reference/flat...

So for the last week or so I have been comparing the T1 to many other dacs. Many other very expensive dacs. The T1 is still king on the dac side....not so much on the headphone side....

    Google ECC86 datasheet and whatever else you want to compare it to.        As for ECC85/6AQ8 tubes that will work, would anyone be interested in ones I have personally tested to work fine? I have a few......hundred.......of them.

  No. It has to do with the gain/plate resistances. The circuit is not set up for ECC85/6AQ8. Some just happen to work great, some do not.      But, as I said many many pages back, to fix the distortion simply turn the player volume down a tad on your computer and turn up the Aune. There is...

I am glad to see some take my advice and do the capacitor upgrade! At first some people were hesitant, but it seems those people are very happy with the results.     On a side note I found a few old Tektronix oscopes full of Telefunken ECC88/6DJ8 painted top tubes, which means they were...

And in every post about that 5 volt tube I said it might not last. I am being the guinea pig here so no one else makes a mistake. I have been using a 12au7 for well over a month now. If you compare the gain, plate resistance, and so on, they are very similar to the 6dj8. The only pin...

12au7 with an adapter sounds great in the Aune.......it is not something I would call ill advised.

One channel got noise on it.

Reguarding the 5BK7A tube.......it lasted 2 weeks. Died this morning. This was a NOS one too. So, using a 5BK7 is a no-go!

I think it's petty to delete info post like that.

Guess I will stay now that certain people can not post in here anymore.        Built another tube amp last night to use with the Aune.......a simple EL84 job.     Tonights adventure is turn this 600 ohm telco tube amp i found into a headphone amp.  

Most European tubes after 1957 had the etching until about 1976. You cannot wipe the etching off. Most US tubes were pained on, and it wipes off very easy. The date codes are often very confusing and are not consistant. Only tubes that are very consistent for factory codes are American octal...

Welcome back Coil....glad to see you back. And Rob, try a 5BK7A tube. It's my #1 tube right now. Been using it for 2 weeks with no issues. Yes I know that is a 5 volt heater tube, and the Aune is 6.3. It is not running excessively hot or bright. There is a chance it can slightly shorted the...

6AQ8 right? Who was the first person to try one in the Aune and reccomend it? Shots fired! All kidding aside, yes the GE one us a great sounding tube.

    Lol you mean me!   BTW a few more tubes will be added to the list soon.

I have the 990's, and like the Mullard and Seimens 6DJ8 tubes to tame the high end.

    I should have said a bit more.......   I checked my caps with an ESR meter and a couple failed.   And you said something about you doubt anyone in here could learn something. You dont know who is in this thread.    But anyways, back on topic.

I checked my caps with an ESR meter.......

Have quite a few more tubes to add to the list. Using a 5BK7A right now. It sounds great. Running the heater 1.3 volts higher than specced *might* shorten the life of the filaments, but who cares.....these tubes are cheap.