PSVANE TUBE WR50 is direct-heated type thorium tungsten cathode triode, can be used as class A1 and AB1 amplification.  Typical operating parameter  Heater voltage 7.5 V  Heater current 1.25A  Ua 350V  Grid voltage -63 V  Ia 45 Ma  Internal resistance 4.1K  Amplification coefficient 3.8  Output power 2.4W 

Heater  Uf………………2.5V  If…………… 2.5A  Static Parameter  Ua……………………250V  -Ug………………… 60V  Ia……………………53mA  Gm……………………2.8 mA/V ...

These are the latest release from Psvane Audio as their affordable series for everyone.  It inherits the warm sound of Chinese KT88 tubes compared to the dry sounding Russian tubes, but also offer you incredible details at a small price tag.  Features:  Clear glass enclosure  Gold coated pins  Can replace all standard Shuguang KT88 tubes  Factory matched quad or pair – each tube packed in its own box  Some precautions about using high voltage power...

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 current peak .........750mA Recommended work status Anode supply voltage 2 × 500V 75Ω per...

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:...

The beam power quadrupole KT88 has an anode ultimate power dissipation of 42W. In the audio amplifier, two tubes can achieve 100W power for the AB1 push-pull output, and KT88 can also be used in the electronic voltage regulator circuit. KT88 is similar to CV5220 and 6550 and can be used interchangeably. Hot wire heating UH............ 6.3 V IH............ 1.6 A Limit rating ------------- --KT94 KT100 KT94 KT100 Anode voltage.................. 800 800 800 800 V Second gate voltage......... 600...

COSSOR authorized production, made by PSVANE. The price is one COSSOR VALVE 274B vacuum tube.  If you need two, we provide the original factory matched All items guaranteed 100% BRAND NEW in the original edition Box. ONE-YEAR WARRANTY !!! 

Product parameters: The same transconductance pentode EL84 has an anode limit dissipation power of 12W, which is used for class A1, AB1, and B amplification in audio amplifiers. Hot wire heating UH 6.3 (parallel) 12.6 (string) V IH 0.30 0.15 A Limit rating Anode voltage 500 V Anode dissipation power 12 W Second gate voltage 300 V Second grid power dissipation 2 W Cathode current 65 mA First gate voltage -100 V Voltage between hot wire cathodes ±100 V First gate resistance 0.3 MΩ at...

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...

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