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Introduction to Twin Audio

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6SN7-6550 single end power amp was made by Thomas.

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Japanese Kiwame carbon film 2W resistors (green color) for audio were used into the audio section of the 6550/KT88 amplifier. The sound of Kiwame resistors tends to be sweet, smooth and detailed. Kiwame audio graded carbon film resistors have a lots of values available and are very good on tube amplifers.

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This is the second 6550/KT88 single end power amplifier we made and sold in 2009. The circuit is new, single one 12AX7 as voltage amplifying stage and single one 12AU7 as cathode follower. The both triodes can supply enough power to 6550 or KT88 and achieve a strong dynamic performance for 12W under single end class A.

KT88SE-X7-U7-22.jpg
 
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