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.