JJ ECC803S / 12AX7
The JJ/Tesla ECC803s Standard pin version is a hi-performance 12AX7 that has a spiral wound filament to reduce noise and hum. The construction is different from the JJ ECC83 in that the plates are more conventional, but have a special heat dissipating fin that serves to improve efficiency and gain. The plates of the tube are also longer as compared to most standard 12AX7 tubes. This over sized plate structure improves details in the bass and low mid-range responses.This is a premium sounding / high performance tube ideal for linestage preamps, mic preamps, studio gear etc.