MK BUEZEN HANDBOEK
Tube type list
12AZ7, Tube 12AZ7; Röhre 12AZ7 ID5298, Double Triode | Radiomuseum.org
FINAL POWER valve for amplification in AUDIO frequency
Sylvania Technical Manual 1959
TORPEDO III Tubes
4S Universal Preamplifier for 12A*7 Tubes
9 Pin Vacuum Tube Socket PCB for 12AU7 / ECC82 12 / ECC8AY7 12AZ7 12BH7 12BY7 57814 6189 7119 / E182CC 7199 E8086 - Walmart.com
12AZ7, Tube 12AZ7; Röhre 12AZ7 ID5298, Double Triode | Radiomuseum.org
9 Pin Vacuum Tube Socket PCB for 12AU7 / ECC82 12 / ECC8AY7 12AZ7 12BH7 12BY7 57814 6189 7119 / E182CC 7199 E8086 - Walmart.com
JJ Electronic - ECC83S - 12AX7, 7025
Tube type list
12AZ7
9 Pin Vacuum Tube Socket PCB for 12AU7 / ECC82 12 / ECC83 12AY7 12AZ7 12BH7 12BY7 5751 5814 6189 7119 / E182CC 7199 E80CC EF86 - Walmart.com
4S Universal Preamplifier for 12A*7 Tubes
Sylvania Technical Manual 1959
power supply - Questions about center-tapped transformer for tube amplifier (MC 275) - Electrical Engineering Stack Exchange
9 Pin Vacuum Tube Socket PCB for 12AU7 / ECC82 12 / ECC8AY7 12AZ7 12BH7 12BY7 57814 6189 7119 / E182CC 7199 E8086 - Walmart.com
Beacon Tube Amps - TWIN TRIODE GAIN FACTORS The table below gives the gain factors for various twin triode preamp tubes with the same pin-out. All of them are drop in replacements.
MK BUEZEN HANDBOEK
List of vacuum tubes - Wikipedia
Popular Preamp Tubes | audioXpress
electron Tube Data sheets - 1
