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Vacuum Tubes
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- 12AT7 / ECC81 / 6201 / CV4024
- 12AU7 / ECC82 / CV4003 / 5814
- 12AX7 / ECC83 / CV4004 / 5751
- 6DJ8 / 6922 / 7308 / PCC88
- EL34 / 6CA7 / KT77
- 6550 / KT88 Types
- 6L6GC / KT66 / 5881
- 6V6GT Types
- 6SL7 / 5691 / CV1985 / 6n9 / 6h9
- 6SN7 / 5692 / VT-231 / 6h8 / 6n8
- 6BQ5 / EL84 / 7189
- 5AR4 / 5U4G / & Other Rectifiers
- 300B / 845 / & Other Triodes
- Misc. Power Tubes
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Upscale Audio in the News
Annual Tube Hunting Trips in Europe
Personal Woo-woo, Concert Pictures, & Hi-fi Buddies
Some of the...unbalanced Customers we Deal With on Occasion
Upscale Audio Warehouse
Tube Testing Equipment & Procedures
Customer Comments