1 пара одинаковых вакуумных трубок PSVANE 2A3B с золотым контактом клапан аудиоусилителя HFI

One Matched Pair PSVANE Audio Vacuum Tube 2A3B Valve Amp New Quantity: Lot of 2pcs 2pcs Chinese 2A3B Matched Brand New ROHS Compliant Good quality tubes Test and selected by factory. 3months replacement warranty from date of receipt. 2A3 is a direct-heated cathode power double triode, it is used in classA1, AB1 amplifier. 1 Matched Pair PSVANE 2A3B Vacuum Tubes Gold pin HFI Audio Amp Valve One Matched Pair PSVANE Audio Vacuum Tube 2A3B Valve Amp New Quantity: Lot of 2pcs 2pcs Chinese 2A3B Matched Brand New ROHS Compliant Good quality tubes Test and selected by factory. 3months replacement warranty from date of receipt. 2A3 is a direct-heated cathode power double triode, it is used in classA1, AB1 amplifier. Heater Uf ………………………… 2.5 V If…………………………2.5 A Maximum Rating Ua…………………………300 V Pa…………………………15 W Rg with cathode bias…………………………0.5 MΩ with fixed bias…………………………0.05 MΩ Direct Interelectrode Capacitances input………………………… 7.5 PF output…………………………16.5 PF grid to plate…………………………5.5 PF Static parameter Ua………………………… 300 V -Ug………………………… 45 V Ia………………………… 60 mA Gm………………………… 5.25 mA/V ri………………………… 0.8 kΩ μ………………………… 4.2 Pout…………………………3.5 W Recommended Operating Conditions（reference value) class A1.single tube.fixed bias. Ua………………… 250 V -Ug……………………45 V RL……………………2.5 kΩ Ia(0)…………………60 mA Gm……………………5.25 Ma/V ri……………………0.8 Kω μ……………………4.2 Pout……………………3.5 W Dtot……………………5 % Push-full.class AB1. fixed bias cathode bias Ua……………300 300 V -Ug……………62 Rk=780Ω V RL……………3 5 kΩ üg(pk)………87 110 V Ia(0)…………80 80 mA Ia(max.sig)…140 100 mA Pout……………15 10 W Dtot……………2.5 5 % Payment Delivery details Terms of sale Payment l We only accept Paypal. l Payment is expecting within 5days after you win the item or pls contact us. l You must offer telephone for delivery. Delivery details l We ship the order within 3days after the payment. l We ship the package by Registered air mail in 7-14days or longer in some countries 20-30days. If you dont receive your item, pls contact us for reshipping or refund. l We ship to the confirm paypal address. Pls make sure your paypal address is right. Or match the address when you payment. A Telephone number is better for delivery . Terms of sale We stand behind every product we sell. If you’re not pleased with your purchase, we’ll be happy to make an exchange or refund the product price less S&H within 30 days of your purchase. For any exchange or refund, we need the original receipt or a record of the purchase in our system, and the product must be in its original condition, including the box, UPC bar code, packaging, and all accessories. Please allow up to 10 business days for returns to be processed. Shipping and handling charges are not refundable.