Vacuum Tube CZ-501-V for 2A3/300B Voltage Amplification, Japanese-made WE310A, New and Unused
79.20 USD(tax included)
／142.56 USD (Excluding tax)
Sales unit: 1 piece
Application number: / Manufacturer: / Model number: m51918559543 / JAN code: / AS ONE / NAVIS Product number:
| Application number | |
|---|---|
| Manufacturer | |
| Model number | m51918559543 |
| JAN code | |
| Sales unit | 1 piece |
| Price | 79.20 USD (tax included) / 142.56 USD (Excluding tax) |
*Additional shipping fees will be charged for this product in Okinawa Prefecture, remote islands, some other areas, and mountain areas. Please note that we may not be able to deliver depending on the region. If we are unable to deliver your order after placing your order, Askul will contact you.
Please note the following points as this item is directly shipped.
- Additional shipping fees will be charged for this product in Okinawa Prefecture, remote islands, some other areas, and mountain areas. Please note that we may not be able to deliver depending on the region. If we are unable to deliver your order after placing your order, Askul will contact you.
- This product may not come with a delivery note issued by Askul. Customers who wish to receive a delivery note issued by Askul can print it out as a PDF file from the usage history on this site after receiving the product.
- It is not delivered in Askul cardboard or a bag.
- We cannot accept changes, cancellations, returns, or exchanges after the order has been placed due to the customer's convenience.
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- If it becomes clear after placing your order that the item is temporarily out of stock, it will be delivered as soon as it becomes available.
This image is a representative image. Please check the specifications for details.
Stock: Slightly
Direct delivery product
Shipping charges for products from this shipping source will be borne by us.
58 USD (tax included)
/ 63.8 USD (Excluding tax)
Product details
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| Product features | Category Amplifier Brand NEC Condition New/unused Shipping Included in price (by seller) From Gunma |
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| Manufacturer name | - | Brand name | - |
| remarks | [About returns] We cannot accept returns due to customer's convenience. | ||
| Product details |
Vacuum Tube CZ-501-V for 2A3/300B Voltage Amplification, WE310A Equivalent, New Unused Heater Specifications: 6.3V / 1.0A The CZ-501-V is a voltage amplifying pentode tube originally manufactured by NEC (Nippon Electric Company) and others for communication purposes. It was specially designed as a vacuum tube for communication and broadcasting equipment used by the former NTT (Nippon Telegraph and Telephone Public Corporation) and NHK (Japan Broadcasting Corporation), and has unique specifications different from those for general radio use. Among audio enthusiasts, it is known as a Japanese-made WE310A equivalent, possessing performance comparable to the renowned American tube, the WE310A. Key Features and Specifications Application: Voltage amplification (primarily for LF amplifiers in wired communication and broadcasting equipment). Heater Specifications: 6.3V / 1.0A. *Please note the similarity to the CZ-501-D, which has a 3.5V specification, and be careful not to confuse them. Typical Operating Example (at Vp=250V): 2nd Grid Voltage (Vsg): 130V Bias (Vg): -2.5V Plate Current (Ip): 7.0mA Transconductance (gm): 3.5mS Use in Audio After its role in communication ended, it gained popularity as a first-stage tube for DIY amplifiers, as introduced in books such as Isamu Asano's Fascinating Vacuum Tube Amplifiers. It is particularly regarded as a good match for driving directly heated triodes (such as 2A3 and 300B). As it was not commercially available to the general public, most units currently in circulation are surplus or used items from that era. Compared to the CZ-501-D, the CZ-501-V tends to be seen less frequently in the market. Please check the multiple images for current scratches and dirt. Those who are extremely sensitive to such details should refrain from purchasing. ● As this is a product from several decades ago, quality cannot be guaranteed. 2026_04_10 Click here for the manufacturer's site 
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