Description
6CU8 6CH8 RCA – RCA Dual Triode-Pentode Vacuum Tube
Versatile Dual Triode-Pentode for Audio and RF Applications
The 6CU8 6CH8 RCA is a dual-function vacuum tube combining a triode and a pentode in one envelope. This versatile design suits audio preamplifier and oscillator circuits in vintage radios, amplifiers, and electronic devices. Due to its compact size and dependable performance, the 6CU8 6CH8 RCA remains a popular choice for restorers and DIY enthusiasts.
Featuring a 9-pin miniature (Noval) base, the tube fits easily into many classic circuit layouts. The triode section typically serves as a voltage amplifier, while the pentode section functions in mixer or oscillator roles. This combination simplifies circuit design and reduces component count without sacrificing performance or tonal quality.
The 6CU8 6CH8 RCA delivers smooth gain, low noise, and excellent linearity, making it ideal for sensitive signal stages. It operates reliably across a range of voltages and frequencies, ensuring consistent output and minimal distortion. Because of these qualities, it often replaces separate triode and pentode tubes in compact equipment.
In vintage audio and radio circuits, the 6CU8 6CH8 pairs well with tubes such as the 6L6, 12AX7, and other preamp or power tubes. Technicians and collectors appreciate its authentic vintage tone and durability, making it a dependable component for restoration projects or custom builds.
Choose the RCA for reliable, space-saving amplification and frequency control. Whether restoring classic radios or designing tube-based audio gear, this tube delivers authentic performance, lasting reliability, and ease of installation.
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