Notice: the price is just for one tube,if you want to matched pair, please buy two tubes 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...

COSSOR VALVE 805M Hiend Vacuum tubes best matched A Pair NEW made by PSVANE 100% Brand new Britain COSSOR authorized production, made by PSVANE. The price is for A Pair of COSSOR VALVE 805M Britain COSSOR authorized production, made by PSVANE. Carbon Crystal II Generation Technology* Ten years ago, the Noble Voice R&D team applied carbon crystal technology to audio vacuum tubes. The carbon crystal II generation technology further enhances the heat conduction performance on the basis of the...

COSSOR VALVE 845 Hiend Vacuum tubes best matched A Pair NEW made by PSVANE 100% Brand new Britain COSSOR authorized production, made in China by PSVANE. The price is for A Pair of COSSOR VALVE 845 Britain COSSOR authorized production, made by PSVANE. Carbon Crystal II Generation Technology* Ten years ago, the Noble Voice R&D team applied carbon crystal technology to audio vacuum tubes. The carbon crystal II generation technology further enhances the heat conduction performance on the basis...

The price is for a pair of 2A3-TII hi-end vacuum tube (2 pcs).  The 2A3-TII direct heating cathode power double triode is used for A1 and AB1 class amplification. All items guaranteed 100% BRAND NEW in the original edition Box.  ONE-YEAR WARRANTY !!!  Filament heating  Uf .............................. 2.5 V  If .............................. 2.5 A  Static parameters  Ua .............................. 300 V  -Ug .............................. 45 V ...

300B-SE customized pipe system directly heated cathode power transistor for A1 class amplification. In the audio amplifier output power requirements for adaptation in 10W occasions.   Limit Ratings Anode voltage: 480V Anode dissipation power: 40W Cathode current Self-bias: 100 mA Fixed bias: 70 mA Electrode capacitance Input capacitance: 9PF The output capacitor: 4.3PF Cross-Road capacitors: 15PF Static parameters Ua: 300V -Ug: 60 V Ia: 60mA Gm: 5.5mA / V Ri: 0.7 KΩ μ: 3.85 Pout:...

Static parameters:  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,...

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...

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 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...