Tubes
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Penta 4CX350A / 8321 Power Tetrode
The 4CX350A / 8321 has a maximum plate dissipation of 350 watts and is intended for Class AB audio or RF amplifier service. The tube is externally identical to the 4CX250B but contains rugged internal construction features. Amplification factor and... more
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Penta Broadcast Tubes
Because of its ability to provide superior quality power tubes at competitive prices, while maintaining the highest standards of service, Penta Laboratories has become a valued resource for an ever-increasing number of radio and TV stations. Moreover, each tube is... more
