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Apos Ray 6SN7 Select, Tubes That End My NOS Madness
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6SN7 Amperex/CBS-Hytron/PhilipsECG/Sylvania Tube Rolling Quads Listening Test Part 2
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PSVANE Horizon 300B, 274B, 6SL7 & CV181 Tubes Review
20:00
SCHIIT Freya+, it's like four preamps in one!
8:31
Schiit Freya Plus Review and Tube Rolling Fun!!
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Any colour you like with the Schiit Freya +
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6SN7 Tube Rolling. Should you change your tubes?
5:50