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Penta Laboratories Amplifier Replacement Parts
3CX800A7 Ceramic Vacuum Tube, Compact Power Triode, 750W PEP Output to 350 MHz, Each
Part Number: PLB-3CX800A7
Not Yet Reviewed
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air
OM-Power Amplifier Tetrode FU-728F for OM2000+, OM2000A, OM2500 and OM4000, Each
Part Number: PLB-FU-728F
Not Yet Reviewed
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air
3CX3000A7 Ceramic Vacuum Tube, High-Mu Power Triode, Each
Part Number: PLB-3CX3000A7
Not Yet Reviewed
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air
4CX800A Single Ceramic Vacuum Tube, Thompson Brand, GU74B Equivalent, RF Power Tetrode, 800W Max. Dissipation, Each
Part Number: PLB-4CX800A-T
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air
3-500ZG Four Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 4
Part Number: PLB-3-500-ZG-4
Not Yet Reviewed
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air
4CX1000A Ceramic Vacuum Tube, Radial-Beam Power Tretrode, 1000W, 110 MHz, Each
Part Number: PLB-4CX1000A
Not Yet Reviewed
Estimated Ship Date: Monday 9/14/2026 if shipped by air
Estimated Ship Date: Monday 9/14/2026 if shipped by air