I got an email from David saying to try the trouble shooting guide and email back the results. I bought some de oxidizer to clean the pins of the tubes and that hasn't helped either. Definitely something with the amp and not isolated to a tube, otherwise I would have just bought some new tubes...

Thanks so much for your input Troll! Really helpful!    I by no means am bagging on little dot as everything so far in terms of customer service has been excellent bar that last email. I'll give him a few days to reply to my latest and I'll update you as to the outcome. Everything I've read...

Email back from david... fairly blunt, said to check the troubleshooting guide and clean the pins. As the problem doesn't seem to be isolated to one tube ie the channel distortion occurs regardless of which tube is placed it's gotta be something else. Waiting for a reply from little dot.   ...

Sent him an email yesterday, I think he's enjoying his weekend though :)

I purchased the MKIV and it sounds great, however I get a buzzing in the right hand channel. It seems to be the right hand power tube not being seated properly. I changed power tubes around just to check if the tube was the issue, still get the same issue on the right hand channel. Once I seat...

Thanks for the replies! I got a buzzing hum in the right channel, reseated the crooked power tube and all is running well again! Doesn't seem to be running hot at all though! Amp itself is producing very minimal heat and the tubes when I put my hand near are again very cool. That normal? Also...

Thanks! Yup realtek onboard audio is disabled, however the nvidia HD audio is still enabled.    STX is set to max, RCA cables leading from STX out to LD.   Set at 44.1khz depending on the music played.    Played through Foobar :)   I got my LD for 440NZD, 299USD+44USD shipping

Just a question, what are the consequences if a tube is not seated properly in a unit? One of the tubes in my little dot has a slight lean to it

Little Dot MKIV just arrived. Ta ta for now :) 

Hey guys, have a question. I'm using my stx as a dedicated DAC>Little dot MKIV>Hd600.   Just wondering is the setup for this simply to connect the RCA cables to the input of the little dot, and set the output of in the xonar centre to 2 speakers?   Also, what volume should I have the STX at?

That's exactly what I plan on doing! Going to run stock for a month or two and then start having a look at tubes. Unless the tube bug bites early that is... haha    Thanks i'll go check that page soon :)   Was looking at some M8100/CV4010. 

Little Dot MKIV ordered!. This is gonna be a hulluvah long wait

  Oh lawd. I haven't even got a tracking number yet and am religiously checking my email to await a tracking number. And when I'm not checking my email, I'm thinking about checking my email. This is gonna be a loooong wait haha 3-4 days for build time and then another 5-10 for shipping

Little Dot MKIV is on its way. Cannot wait for it :)

Wheres the love for the little dot products!! Haven't seen an MKIII or MKIV recommended in a while :P