7025WA

TAD

selected preamp tube (RT080)

ECC83WA

TAD

selected preamp tube (RT008)

7025

TAD

selected preamp tube (RT010)

12AX7AC

TAD

selected preamp tube (RT001)

7025S

TAD

selected preamp tube (RT011)

7025/E83CC

TAD

selected preamp tube 7025 / E83CC (RT030)

ECC83Cz

TAD

selected preamp tube (RT003)

ECC803S

TAD

selected preamp tube (RT033)

12AX7WAR

TAD

selected preamp tube (RT006)

12AY7

TAD

selected preamp tube 12AY7 / 6072a (RT007)

12AY7HG

TAD

selected preamp tube 12AY7 / 6072a high grade (RT070)

5751

TAD

selected preamp tube (RT009)

5751HG

TAD

selected preamp tube (RT090)

12AT7

TAD

selected preamp tube 12AT7 / ECC81 (RT002)

12AU7

TAD

selected preamp tube 12AU7 / ECC82 (RT005)

12AU7WA

TAD

selected preamp tube 12AU7WA / E82CC (RT065)

12BH7ASTR

TAD

selected preamp tube (RT043)

12DW7

TAD

selected preamp tube 12DW7 / 7247 (RT044)

EF86

TAD

selected preamp tube EF86 / 6267 (RT-EF86)

6922

TAD

selected preamp tube 6922 / E88CC (RT-6922)

6SN7GT

TAD

selected preamp tube (RT980)

6SL7GT

TAD

selected preamp tube (RT-6SL7)