The price is for one pair. we also can provide the matched quad! The price is for one pair. we also can provide the matched quad!   KT66GC/KT66GE The beam power tetrode KT66GC/KT66GE has an anode limit power dissipation of 25W. Use A1, AB1, AB2 class amplification in audio amplifiers. Hot wire heating UH………… 6.3 V IH………… 1.27 A   extreme rating            Tetrode connection Triode connection Anode...

Some precautions about using high voltage power tubes:  Unlike other vacuum tubes such as KT88 or EL34, which typically run at 450V plate voltage, high voltage power tubes such as 845, 805 and 211 run at plate voltage 900V or even higher depending on your amp design. Due to the high voltage in the circuit, biasing an 845 / 805 or 211 amp improperly may expose you to lethal high voltage causing instant death. If you haven’t owned any tube before, we recommend you not to start with a...

Description：  Heater  Uf………………2.5V  If…………… 2.5A  Static Parameter  Ua……………………250V  -Ug………………… -45V  Ia……………………60mA  Gm……………………5.25 mA/V ...

1, PSVANE T-Collection series MK II use the Carbon Microcrystalline technology. Carbon Microcrystalline is a kind of very stable absorbent (material), and it has excellent heat transfer performance. Carbon Microcrystalline make up stabilization of the electrical performance inside of the Vacuum tube.  2, The PSVANE T-Collection series MK II tube socket is made with Teflon. It is very low electric inductivity, very low dielectric loss, and high breakdown voltage, high electric volume...

The price is for 1 pair (2 pcs).  It is a direct thermal cathode power transistor for A1 type amplification. Adapted to the audio amplifier for output power requirements at 10W.  Filament heating  Uf (DC) .................. 5V  If (DC) ............... 1.2A  Static parameters  Ua ........................ 300V  -Ug ..................... 60V  Ia ........................ 60mA  Gm ........................ 5.5mA / V  ri ........................ 0.7...

PSVANE Vacuum Tube KT88-T II classic Grade Matched Quad(4) PSVANE KT88-T MK II tube 100% Brand New 1, PSVANE T-Collection series MK II use the Carbon Microcrystalline technology. Carbon Microcrystalline is a kind of very stable absorbent (material), and it has excellent heat transfer performance. Carbon Microcrystalline make up stabilization of the electrical performance inside of the Vacuum tube.  2, The PSVANE T-Collection series MK II tube socket is made with Teflon. It is very low...

this is the pice for one piece if you need pair, please order 2 piece, we will matched pair for you Brand new PSVANE Premium ACME Series Vacuum Tubes Model No.: ACME 274B/A274B​ (Replace other 274B tubes directly) Aluminum teflon tube base Factory test&match pair, luxury gift box Warranty: 12 Months The price is for 1 PAIR/lot A274B Filament heating Uf..................5V If............... 2A Limit rating Anode reverse voltage peak...............1550V Anode...

PSVANE ACME KT88 AKT88 Vacuum Tube HEATER UH-----------------6.3 V IH------------------1.6 A MAXIMUM RATING RATING MAXIMUM Ua---------------------------- 800 800 V Ug2-------------------------- 600 600 V Ug1-------------------------- 200 -200 V Pa---------------------------- 42 35 V Pg2-------------------------- 8 6 W Pa+Pg2--------------------- 46 40 W Ik---------------------------- 230 230 mA Uhk------------------------- 200 250 V Tglass shell------------------- 250 250 ℃ Rg1 Cathode bias...

Glass shell eight feet directly heated full-wave rectifier，274B TII is very similar with 5U4G and 5Z3P, which can be replaced by each other.  Specifications:  Heater  Uf………………5V  If…………… 2.5A  Maximum Rating  anode inverse peak voltage……………1550V  anode peak current ………750mA  Recommend working condition  Anode supply...

Psvane KT150J  Hi-end Vacuum tubes Electric tubs Matched Pair Replace  KT170 KT120 KT88 100% original factory and brand new the price is for one matched pair so if you need matched quad, we also can provide it