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--Kei--: DIY Mullard 5-20
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--Kei--: DIY Mullard 5-20
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--Kei--: KMW_2650
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--Kei--: Tung Sol EL34B
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--Kei--: Mullard 5-20 KT77
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--Kei--: KMW_2970
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--Kei--: KMW_2974
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--Kei--: Tung-Sol EL34B
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--Kei--: JJ KT77
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--Kei--: Electro-Harmonix 6CA7EH
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--Kei--: Electro-Harmonix 6CA7EH
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--Kei--: Mullard EF-86
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--Kei--: Push Pull EL34/KT77 valve amp
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--Kei--: DIY vacuum valve amp
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--Kei--: Warm glow
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--Kei--: B9a Valves
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--Kei--: MK-IV-14
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--Kei--: MK-IV Prototype
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--Kei--: DIY EL34 Push Pull amp
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--Kei--: Tung-Sol 7581A
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--Kei--: Thermionic Valves
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--Kei--: 7581A