Known for exceptional tone, clarity, and durability, the JJ 12AT7/ECC81 is a medium-gain dual triode tube ideal for use in preamp sections, reverb drivers, and hi-fi systems. Manufactured in Slovakia with strict quality control, this tube delivers warm, articulate sound with low noise—making it a favorite for guitar amps and audio gear.

Whether you're upgrading your amp or restoring vintage gear, JJ tubes are trusted by professionals and tone purists alike.

Features

• Rich tone and low microphonics
• Warm and articulate response
• Ideal for preamp, reverb, and hi-fi applications
• Manufactured by JJ Electronics in Slovakia

Specs

• Tube Type: 12AT7 / ECC81
• Configuration: Dual triode
• Gain Rating: Medium (typically ~60% of 12AX7)
• Heater Voltage: 6.3V or 12.6V
• Heater Current: 300mA @ 6.3V | 150mA @ 12.6V
• Plate Voltage Max: 300V
• Transconductance (Gm): ~5500 µmhos
• Typical Plate Resistance: ~15,000 ohms
• Base Type: 9-pin (Noval)
• Socket Compatibility: Standard 12AT7 / ECC81 sockets
• Applications: Guitar amp preamp stages, reverb drivers, studio gear, hi-fi audio
• Country of Origin: Slovakia
• Quantity: Single tube