Tube rolling
The practice of swapping out different brands of a particular type (say, KT88 or EL34, to name two common types) of tubes in an audio amplifier. Being the component in an amplifier that actually amplifies the signal, the tube chosen can have quite an effect on the sound. Because of different quality control and manufacturing techniques from one company to another, simply swapping out the tubes in your amplifier can change the sound. Naturally, all of this is very subjective to the tastes of the particular listener, but objectively some tubes are more linear than others and so should provide more accurate sound reproduction. Tube rolling, then, can be thought of as auditioning different tubes, much the way you audition different amps or speakers themselves in a store before buying them.
The Urban Dictionary Mug
Great mug…. Got one for Cole M.’s girlfriend.
I ordered a customized mug for my gf and everything came out well. There were no autocorrect mistakes and the mug was unscratched. Would shop here again
Also got one for Cole M.'s girlfriend, even faster sex.
Istgd imma force my mum to buy this idek hw i find out but this shit looks fucking fire

Perfect coffee cup for a hockey fan. Great conversation starter.
Perfect gift! My husband loved it. So funny and clever!
Great mug… got one for my girlfriend… instant sex
As always, these are well made mugs that stand up to most anything. And they make perfect gifts (in this case for dirty-minded members of a wedding party). I’m extremely pleased.
Is a great mug that I purchased as a gag gift for a coworker. You know the one who also as interesting words/phrases that only urban dictionary can explain. Great as a coffee mug and better as conversation piece!
👍

The mug exceeded my expectations. Really excellent quality and build
Jim, you’re a fucking idiot interfering with accurate ratings and legitimate feedback. Get a hobby.
Great gift!
A little spendy, but worth it.
My wife kept talking about "ways out" being a Denver version of "psych" and she was right, so I got her this once I found it on UD. She loved it!
It's a great mug, will reccomend to family members my grandma gave me this mug for christmas and it was by far the best gift i got.
It arrived three weeks after ordering but given the holiday rush and inability of shipping to keep on schedule arrived late but was perfect little gift from me to my wife for her morning coffee with her "nickname" on the mug.
I liked the photo on your website and so I ordered the mug. You sent it right away, and it looks great!
Arrived carefully packaged

me and the boys when i get vodka mug
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