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GU-33B ( GU 33B ) TETRODE TUBE USED $7.00 |
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6CY5 Tube NOS Westinghouse Premium Screen-grid Tetrode $2.95 |
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GU-29 / GU29 = 829B Double beam tetrode tubes. Lot of 2 $14.00 |
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6R3S-1 / 6P3C-1 Audiophile Tetrode Tubes PRIBOY 4pcs $32.00 |
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Lot of 6 Russian tubes GMI-6 PULSE MODULATOR TETRODE FREE WORLDWIDE SHIPPING $24.99 |
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Lot of 8 Russian tubes 6E5P Audiophile’s Tetrode FREE WORLDWIDE SHIPPING $22.99 |
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Lot of 2 Russian tubes DOUBLE BEAM TETRODE GI-30/829B FREE WORLDWIDE SHIPPING $14.99 |
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PAIR JAN 6360 Tubes Amperex USA NOS Double Beam Power Tube Tetrode 6360A $12.95 |
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GS-15B / GS15B – Lot of 4 Microwave Tetrode Tubes $25.00 |
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(2) Vintage 6C6 Audio Radio Amp Vacuum Tubes – Sharp-Cutoff Tetrode $4.99 |
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ONE GU 19-1 NOS/NIB RUSSIAN TUBE DOUBLE BEAM TETRODE . $8.99 |
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Vintage NOS/NIB KEN RAD Type 32 Battery Radio Vacuum tube Sharp Cutoff Tetrode $9.99 |
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GU-74B = 4CX800A 4CX-800A SVETLANA TETRODE. 1 NEW TUBE $139.00 |
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AMPEREX TUBE 5894B/8737 DOUBLE TETRODE NIB NOS (C11) $34.00 |
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GU-34B (gu-34b) Russian Power Tetrode Tube (Boxed) NOS $35.00 |
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6E6P-E Audio Tetrode Tubes! RARE! NOS! Lot of 10 NEW $30.00 |
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6P3S =6L6 =6L6GT =6L6GC =5881 Output Beam Tetrode Tubes REFLEKTOR NOS OTK 70-80s $65.99 |
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6P3S =6L6 =6L6GT =6L6GC =5881 Output Beam Tetrode Tube REFLEKTOR NOS OTK 70-80s $99.99 |
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6P3S = 6L6 = 6L6GT =6L6GC =5881 Beam Tetrode Tubes REFLEKTOR NOS OTK Date I-1974 $85.99 |
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6P3S-E = 5881 = 6L6GS Output Beam Tetrode Tubes REFLEKTOR NOS OTK Date VIII-1989 $17.49 |
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Eimac 4CX3000A/8169 Power Tetrode Tube Used in Box $299.95 |
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Vintage Telefunken UCL11 tube (audio output tetrode + triode) $24.00 |
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POWER TETRODE TUBE GU-74B / 4CX800A GU-74 New BOXED $129.00 |
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GTE 175 M Trigger Tetrode Tube ETL England NOS $7.95 |
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2 pcs. 6P21S Beam tetrode direct heating Tubes . NOS $9.99 |
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6E5P Audiophile Tetrode Tubes Lot of 8 NOS $16.00 |
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6P1P (~6AQ5 6V6), Svetlana Audiofiles Tetrode Tubes 8 pcs NOS $9.99 |
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6E5P Audiophile Tetrode Tubes Lot of 4 NOS $9.00 |
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6P13S / ~EL36 Beam Tetrode Tubes / NOS LOT of 6 $12.00 |
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GU-32 = 832 15W RF Double Beam Tetrode Tube Valve 4 pcs $24.99 |
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Pair NOS 8643 Dual VHF Tetrode Tubes $19.95 |
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LOT OF 1 – EIMAC 3X2500F3 TETRODE POWER TUBE $1,299.95 |
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RUSSIAN TUBES GMI-83V Power Pulse Tetrode – Modulator + sockets NEW LOT of 1 $50.00 |
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RUSSIAN TUBES GU-72 TRANSIMTTING TETRODE and socket VHF NEW – LOT of 1 $60.00 |
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TETRODE ELECTRON TUBE * 7651 / RS1064C (Mfr Siemens) $2,700.00 |
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Tested Philco Type 32 ST VT-44 Screen Grid Tetrode Tube FREE SHIPPING $9.99 |
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4CX250B/7203 tube tetrode new production ham linear final w/ warranty $99.90 |
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6P1P-EV / 6AQ5 / EL90 Tetrode Tube SSVETLANA Tubes NEW! $89.00 |
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GE 6GB5 EL500 TETRODE BEAM POWER VACUUM TUBE NICE NOS $6.99 |
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RCA 6GB5 TETRODE BEAM POWER VACUUM TUBE NICE NOS $6.95 |
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Basic Electronics, Volume 2: Introduction to amplifiers; The Triode Tube; Tetrodes & Pentodes; Audio Voltage & Power Amplifiers … |
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Transmitting valves;: The use of pentodes, tetrodes and triodes in transmitter circuits (Philips’ Gloeilampenfabrieken, N. V., Eindhoven. Technical library.Series of books on electronic valves) … |
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Manley Labs Neo-Classic 250 Watt Monoblock Amplifier $12,500.00 Input sensitivity: 1V Gain: 32dB tetrode; 30dB in triode Input Impedance RCA: 116 Kohm @ 1KHz Input Impedance XLR: 270Kohm @ 1KHz; 20Kohms @ 20KHz; 38Kohm @ 20Hz Noise Floor: Tetrode: -67dB; Triode -65dB typical S/N Ratio: -80 dB Dynamic Range: 96dB Flat frequency response: 10 Hz – 30 KHz continuous Power Consumption: 30 Watts in “Ever-Warm” Full power (tetrode): 500W Full power (triode)… |
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High power Audio Beam Tetrode $140.00 High Quality Audio Power Tube… |