DX553 Amperex Transmitting Tube DX553 / 4CX350A / 8321 (NOS)
The DX553/4CX350A/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 cathode area have been increased over the basic 4CX250B to give higher transconductance and figure of merit.
Limited 90 Day Warranty, Limited Quantity Available, New Old Stock, Not for Export
Made in USA
|Made in the USA||Yes|
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