Description: victor novikov victor novikov 2 853 2023-07-07T18:44:00Z 2023-07-07T18:44:00Z 1 893 5094 42 11 5976 16.00 140 Clean Clean false false false false RU X-NONE X-NONE MicrosoftInternetExplorer4 NOVIK TUBES STORE Item name: MATCHED PAIR OF 5Z4M NEVZ NOVOSIBIRSK PLANT Quantity in current lot: 2 x 5Z4M NEVZ (MATCHED QUAD 1%) Item type: SOVIET MATCHED TUBES Item condition: New OLD STOCK, NOS, Soviet military tubes. Similar tubes: CV186 5Z4 GZ32 ~5AR4 ~GZ34 ~GZ32 The tube 5Z4M is not the FULL replacement of 5AR4 and GZ34, GZ32! Description: These tubes were made by Novosibirsk military plant in former USSR. Date 1970s. Excellent quality. Tubes are new, taken out from wholesale factory box. Main technical characteristics on 5Z4M: Heating voltage ...... 5 - 0.5 V Filament current ...... 2 - 0.2 A Anode voltage nominal (constant) ...... 50 V Anode current nominal (for each diode) ...... not less than 300 mA Anode current limit (average value) ...... 140 mA Anode current limit (amplitude value) ...... 415 mA The anode current at the moment of switching on the limit (amplitude value) ...... 1.4 A Rectified current (for each diode) ...... not less than 133 mA Voltage of the secondary winding of the transformer ...... 2x400 V Filter capacity ...... 4 uF Resistance in the anode circuit ...... 4.7 kΩ Testing process: All tubes sold by us are tested on a high-quality Soviet device L3-3. In our laboratory there are three L3-3 of the latest modifications and several ancient L1-3, each of which has its own modifications to make the selection of tubes as accurate and high-quality as possible. If applicable, we also test the tubes for noiselessness on a special amplifier bench assembled for such tests. When selecting tubes, we try to choose tubes that are as similar as possible in terms of their parameters. The matched pairs\quads shown in the photo are one such example. The meanings themselves vary from pair to pair. If you want to have a pair with certain values or know them before buying - please write to us. Our standards: 1. All tubes we sell have never been used and have been stored in warehouses. We carry out a careful selection and testing of all tubes on a variety of parameters. 2. We package all items securely to prevent any damage during transit. 3. If you have special requests for tubes, we are always open to dialogue. Other listings with this item (combined shipping applies): !! We are always ready to combine shipping, if you want to buy several items - write to us first and we will offer you the best option!! Support: We are always ready to help you choose the right tube, saver, converter or socket. If you do not understand something - you can always write to us, we will help and advise you. We have over 40 years of experience with tube amps, during which time we have encountered the most unusual problems and are always ready to share our experience. About us: Qualitatively tested and selected tubes at a reasonable price! Savers, adapters and converters for customers who decide to play pipe rolling or extend the life of their tube amp! We are constantly in touch and try to help everyone who decides to join the world of hot tubes! The main thing is that it is beautiful and cool! We are grateful to our colleagues from China, who, with their prices that are impossible for a Western manufacturer (American or European), made tube amplifiers affordable for a non-rich client! (Expanded the market at times) We are rediscovering for ourselves some types of tubes, which (it turns out) can be very different in sound from the year of manufacture, batch, plant, country! Constant monitoring of the forums will help us, as well as many years of experience in testing tubes and making professional tube amplifiers! Practically, all NOS tubes (our subjective opinion) have never been made for HIFI. Especially Soviet ones! That is why you have to look and try! Less hearing from others, more listening to yourself - We are all different! Considering that many types had a military purpose and are therefore very reliable! The entire modern remake is an order of magnitude worse in this parameter. Special orders: If you did not find the adapter or saver you need in our store. You can request a custom production. We can produce an adapter or a saver according to your request, taking into account your wishes for materials and components. Return policy: We are always ready to return the money if the tubes arrived damaged or did not match the description. We do not accept returns on the subjective basis of sonic qualities. If you are looking to tube roll on our dime, look elsewhere. All of our products are guaranteed unless otherwise stated.� All items all guaranteed to be as described and free of any electrical or operational faults such as shorts, low test, microphonics, noise etc. Returns will be accepted for tubes that don't test as described in most cases, but we reserve the right to refuse a return if the tube was not tested properly by the customer; We also reserve the right to refuse a return if it is clear the item was used improperly. For example-a tube installed in the wrong amplifier. Shipping: All items will be shipped to you from Estonia (EU) by Registered Airmail (TRACKING PROVIDED) within 1-3 business days after payment is received. We pack all our items carefully and securely. Shipping usually takes about 5-10 days for a package to arrive to Europe, 10-30 days to USA, Canada, Asia, Africa, Australia and Japan. These times apply to 95 percent of all packages we ship. Unfortunately, sometimes there are delays. We guarantee buyer protection, but in order to recognize the parcel as lost, you need to wait 3 months, this is the deadline for shipments. We have shipped hundreds of items internationally and while we have had plenty take months to arrive, we have almost zero packages ever go missing. Depending on your country's policies, you may be responsible for import taxes when ordering overseas from us. We are not responsible for any taxes, duties, or customs fees. We will not falsify the value of an item to avoid customs taxes. Doing so is illegal and can result in seizure of your item.
Price: 19.99 USD
Location: Tallinn
End Time: 2023-09-07T19:22:38.000Z
Shipping Cost: 12.99 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Soviet
Type: Vacuum Tube
Model: 5Z4
Country/Region of Manufacture: Estonia