Broadcast
Showing 10–13 of 13 items
572B Matched Trio
The Penta Laboratories 572B audio tube for sale is a power triode designed for use as a RF Oscillator, RF Power Amplifier and audio frequency modulator. The 572B audio tube amplifier pack is a direct replacement for the 811A, but has a graphite anode for increased performance and reliability.
$269.85
811A
The Penta Laboratories 811A is a high mu power triode designed for service as an audio frequency amplifier or modulator, or as an RF amplifier or oscillator. The Penta Labs’ 811A high power RF amplifier is capable of outputting up to 160 watts at frequencies up to 30 MHz.
$49.95
811A Matched Pair
The Penta Laboratories 811A is a high mu power triode designed for service as an audio frequency amplifier or modulator, or as an RF amplifier or oscillator. The 811A is capable of outputting up to 160 watts at frequencies up to 30 MHz.
$99.90
811A Matched Quad
The Penta Laboratories 811A is a high mu power triode designed for service as an audio frequency amplifier or modulator, or as an RF amplifier or oscillator. The 811A amplifier is capable of outputting up to 160 watts at frequencies up to 30 MHz.
$199.80
Showing 10–13 of 13 items