gibosi
Headphoneus Supremus
- Joined
- Oct 18, 2012
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The fat bottle is actually a Cossor 53KU and the skinny bottle is a Mullard GZ37, and yes, they sound quite different. To my ears, the 53KU is better and in fact, it is one of my favorites. Whether it is actually worth the extra price is a question that only you can answer.