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Transcendent T16 OTL amplfier.
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Pocket pure 6N16B vacuum tube OTL stereo headphone amplifier, warm sounding (amplifier is 45x45x55mm, transformers drive grids in push-pull, tubes use DIP8 socket, black box is a power supply which converts 12V
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6C33C OTL
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Review] Acuhorn S1 OTL Valve Amplifier
Ultimate Finemet Matching Transformer for OTL Tube Amplifier made in JAPAN | eBay
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