I've been trying to think about this for the past minute or so, and to be honest I can't really think of a particular weakness of the Qudelix 5K that's worthwhile enough to be mentioned here, a fleeting post on an internet forum. That says a lot about the Qudelix 5K, I think.

Uh oh...this is deeply concerning. Hope the issue gets resolved for you fast.

Thanks for the input on the PM2. Looks to be what I'm looking for :) Ah, ok. Yup, that makes sense re: the blutac'd Q1. Thx! What's your 'ceiling' of headphones to use with the Q1, btw? I mean, can it drive your 580 or 650 well?

Thanks for the input! Coincidentally, I'm looking at the Playmate 2 as my next dac/amp purchase :) Worth the price? Regarding the Blutac'd Q1, do you have it attached to your desk upside down? Mind sharing a pic of your setup if you have one handy?

Blutack-ing sounds good! I might just do the same :) How does it compare to your other amp/dacs? Do you feel like it's getting a bit too long in the tooth?

Anybody still using their Q1 1st gen? I still am, and it's working like a champ! Drives the Ananda and even the HD6xx with no issues.

So, is it a 'feature' or a defect? Any chance I can get mine repaired or replaced if it's the latter?

Nice! Here's hoping you get your MT602 soon. And do let us know how it goes with those tubes you've ordered. First time I'm getting to know about these. I'm assuming they're to lessen the chances of the vacuum tube sockets being damaged when doing frequent tube-swapping?

I'm sorry but this is kinda dubious to me now, especially since I have a friend who has the Zen Dac v1 (same as mine) with no issues at all on his 4.4 jack when used with all sorts of cables with 4.4 plugs from many different manufacturers. On his Zen Dac v1, when the 4.4 plugs are inserted all...

Loads of power, happy with mine. I think you'll most probably like it. Do you plan on swapping tubes right away?

I'm very happy with my 5K and have been since I bought it at launch. I almost went for the BTR5 over the 5K but now I'm very glad I chose the latter. No idea about the UTWS5 tho. For the money, why not give the 5K a go?

Just as an aside, IIRC the B40 does not use a 'true' PK shell. It is slightly bigger.

How you liking it man? :)

I have both. They're different in terms of SQ, almost like apples to oranges. If you can afford it and if absolute best SQ if what you're after, go for the Mojo. Otherwise, the 5K is still super good.

Looks wicked. How's the fit/feel in ear, similar to MX500 shells?