6SL7

Octal 8-pin high-mu (mu=70) twin triode designed for high-gain, low-distortion audio voltage amplification, phase inverters, and industrial control instrumentation. Equivalents: 6SL7GT, 6SL7G, VT-289, 5691, 6113, CV1984, CV1985, 6N9S. Real-Life Examples: Ampeg B-15 Portaflex bass amplifier, vintage McIntosh MC30 monoblock tube power amplifiers, Seeburg M100A tube jukeboxes.