Quote: Thanks so much Jason!!   I wanted to try and test and make sure I didn't waste your time.  Don't for a moment think I am not a happy customer, I own a Lyr too. my unit is B080137 maybe number 137?     By the way it does sound awesome!

Quote: I am trying to gather as much data as I can so that we can fix the issue. I am totally committed to providing something not just venting. Once I have a complete roundup and test against Linux and Windows systems I expect to reach out.

Modi problems, good news, workaround without reboot.   Report:  The Modi sounds great for a certain period of time. I have tested the device from USB powered hubs, directly to  two different Macbooks and I definitely have an ISSUE.   Background: I am far from a MacOSX expert but I...

Just got in some Japanese 12AT7 tubes,  lucky me included in the lot were 2 Marconi super-rare made in Japan tubes.   And i found some GEC B309s,  i guess we should have a flood of tube reviews soon!

Quote: Jimmy Page and The Black Crowes Live is excellent sounding.

Quote: will you be modding ksc75s for people?

Quote: you rock, all new as of yesterday.  you must be pretty amp'd  (ignore bad pun)

Quote:   Are you sure it isn't the headphone cables microphonics and not necessarily the tube? Did you try and switch the tube to the other spot and replicate findings?

Quote:   If you just got the tubes, they do need some burn in,  secondly it takes a while for the Lyr to warm up.   From my testing, I do think the 7v Tubes PCC88 7dj8, seem to have more "air" and "separation", these are usually a steal since very few designs call for a 6dj7...

Got some Rare GEC and OSRAM B309/A2900 tubes for 12AT7 guys to try. :)   And barring disaster a HP 339a Distortion analyzer, for some testin. http://cp.literature.agilent.com/litweb/pdf/00339-90001.pdf

Quote:   So i just switched mine back in.  They do sound nice and smooth. Great for jazz and ambient.

Quote: Try a LOD cable, it makes enough of a difference with line level out to drive T1 awesomely.

Quote:     I believe this correlates with the Freq Response graph Dan put up. There is some dip 40-85Hz range then a quick rise.  I might be confused.   http://www.mrspeakers.com/image/data/mrspeakers/MD%20frequency.png

Quote: I would totally agree on that analysis of the two tubes.  Definitely the Tesla has more bass tonality.   For what it is worth, I have the Russian set of tubes from Schiit and they have almost no bass response very airy.

I have the JAN Philips 6922s, but i think the BEST bang for the buck is   Tesla ECC88 6DJ8 1960s NOS (NOT JJ) - M. Pairs MINT NOS - Rožnov Prod   Should be 30 bucks for a matched pair  I believe they sound better than the JAN Philips