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...

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...

Specification:  2.2 Electrical parameters ---- Rating rating unit  2.2.1 Capacitance between electrodes  2.2.1.1 Input Capacitance 15.5 PF  2.2.1.2 Output Capacitance 8.4 PF  2.2.1.3 Cross-circuit capacitance ≤ 1.5 PF  2.2.2 Typical operating parameters  2.2.2.1 Hot wire voltage 10 V  2.2.2.2 Hot wire current 0.36 A  2.2.2.3 Anode voltage 135 V  2.2.2.4 Curved gate voltage 135 V  2.2.2.5 Control gate voltage -3 V  2.2.2.6...

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...

WE211 is direct-heated type thorium tungsten cathode triode, can be used as class A, B and C. Heater Uf: 10 V If: 3.25 A Direct Interelectrode Capacitances input: 6 PF output: 5.5 PF grid to plate: 14.5 PF Static parameter Ua: 1250 V —Ug: 70 V Ia: 100 mA Gm: 3.8 mA/V u(Ia=75mA): 12 RL: 7 KΩ Pout: 10 W

Parameter：  The long waiting of the American WE300B re-issue from USA seems endless; but now Chinese tube manufacturer Psvane Audio has stepped up to make a 1:1 replica of the original WE300B.  According to Psvane Audio, the Psvane WE300B Replica is: “100% 1:1 replica of WE300B, including materials, structure, internal and external size – up to the detail of a tiny screw used”.  Sample production run in Dec 2011 with test launch in China and Japan on Jan 8th...

Parameter：  This Psvane HiFi Series 274B is an interim product for re-producing the legendary WE274B 1:1 replica. It doesn’t have 100% same appearance as the original WE274B but sound quality is probably the best among all current production rectifier tubes. (The final WE Replica series WE274B 1:1 will be available at future date upon factory notice)  On some Chinese webpages, this tube is referred as WE274B Replica because some original WE filament materials are used in...

UK-EL34 is a high-performance audio output pentode, its anode limited dissipation power is 25W. The output power is more than 10W when it is for Class A1 amplification as a single tube in audio amplifier.The output power more than 35W when it is for Class AB1 amplification.  

Classification-Dome-type or Aubergine-type bulb of glass, a white ceramic base with four-prong bayonet gold pins , oxide coated filamentary, solid plate, mesh plate, cabon plate triode.  Application-Audio frequency amplifier where power outputs of approximately 8.5watts or less is required at relatively low plate voltages.  Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1, 2 and...

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...