Siemens 6AK5W Blue Glass Round Hole

Siemens 6AK5W Blue Glass Round Hole

1 Star2 Stars3 Stars4 Stars5 Stars (19 votes, average: 4.21 out of 5)
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Siemens E81CC Triple Mica

Siemens E81cc Triple Mica

1 Star2 Stars3 Stars4 Stars5 Stars (32 votes, average: 3.66 out of 5)
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Siemens 12au7 Silver Plates

Siemens ECC82 Silver

1 Star2 Stars3 Stars4 Stars5 Stars (22 votes, average: 4.27 out of 5)
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“Siemens have better performance in extension, mare transparent and solid sound, great in piano and guitars” Read

“the best out there if you value clarity, dynamics, tonality, and smoothness” Read

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