These are used but test at nos levels, various brandings available, but made by mullard. The vintage ones are in short supply, and this affordable sovtek is the perfect replacement which will give you the. The nos mullard gz37 cv378 tube is a indirectly heated fullwave vacuum rectifier tube. The 5y3 is a mediumpower directly heated fullwave rectifier vacuum tube introduced by rca in 1935. Shop for the jj electronics 5ar4 gz34 rectifier vacuum tube and receive free shipping on your order and the guaranteed lowest price. Ive read about reliability issues with jj and chinese gz34 tubes. My favorite tubes and their substitutes by robert h. Book depository books with free delivery worldwide. This is a chart showing the specifications for 5 volt rectifier tubes that can be used in guitar amps. Weber copper cap rectifiers are solid state rectifier replacement devices for use in place of vintage tube rectifiers.
It is virtually identical, electrically, to the older fourpin type 80 tube, but with an octal base. Nos tube specification sheet nos tube specification sheet. Reissue of the most popular rectifier valve ever built by mullard. Mullard gz34 for sale in uk 42 secondhand mullard gz34.
Most of the datasheets are in pdf format and some are links to other html pages. Mullard new production gz34 5ar4 rectifier upscale audio. By having this information on a chart you can choose a rectifier tube that will best suit your playing style. Brand new in military or oem boxes, made by mullard in the 1950s. Rectifier tubes were some of the very first tubes to be invented since their purpose is one of the first requirements in electronic and audio design. Not sure if this is a function of the degree to which the rectifier tube can impact the sound or simply that the sonic difference between these rectifier tubes is less significant. You should consult the manufacturer of your equipment too if. Vacuum tube 5ar4 gz34, rectifier, full wave antique. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. The telefunken gz34tk is an excellent replacement for any amplifier using gz34 or 5ar4 rectifier tubes. Vacuum tube gz34 5ar4, mullard reissue antique electronic. I usually tend to use 5u4gbs as the rectifier when needing a high current tube rectifier and account for the larger voltage drop with the correct transformer however the 5ar4gz34 is a good tube as well. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. The jj electronic gz34 5ar4 is rugged rectifier at a reasonable price.
Gz34 datasheet pdf the gz34 isnt a very talked about tube, but it is one of the most common rectifier tubes found in audio, especially in guitar amps. Probably the most renowned 5ar4 rectifier tube, the mullard really makes a difference in your hifi or guitar amp sound. The jj gz34 5ar4 tube is another affordable replacement rectifier tube for both guitar and hifi tube amplifiers. They were commonly used for tvs in the horizontal output stage. The more of a voltage drop dcv drop you have the more sag or compression you will have. Get the guaranteed best price on rectifier tubes like the jj electronics 5ar4 gz34 rectifier vacuum tube at musicians friend. Mullard gz34 5ar4 rectifier tube audiogon bluebook. See my other video called buzzing drake output transformer.
One 5ar4 can deliver enough current to run a 50 watt amplifier and is used in the super reverb, deluxe reverb, and many other tube amplifiers. Some reshearch on my recent 69dr purchase turns out that fender had bunches of ab763 tube stickers left and continued to use them well into 1971. There are various sources for rectifier tube data sheets free on the net. Jj electronics 5ar4 gz34 rectifier vacuum tube guitar. The valve uses thick grade glass and rugged military. Going from one type to another such as 5u4gb to gz34 will give you different tones and different sag characteristics. Heatercathode twin diode designed for fullwave rectifier operation. The 5ar4gz34 is a high vacuum, fullwave rectifier capable of output currents up to 250 milliamperes. These typically last decades as compared with modern production gz345ar4s which last hours to a couple of years if.
Its a vacuum tube rectifier diode, usually only one in the bottle. Jj has a reputation for building sturdy tubes and this one is no exception. Octal socket, full wave rectifier tube, very suitable for amplifiers and preamps, because of its small size and high power raitings. In particular tye gz34 has a lower heater current than many others of a similar ht rating. This is a suitable replacement for any gz33 cv5745 fullwave rectifier tube type. Although it is not a direct sub to the gz345ar4 tube or 5u4g tube, it can be used in many of these circuits. Audiophiles have known for years of the gz37cv378 rectifier tube and its wonderful sound quality. The classic mullard gz34 tube has always been a favorite and is the most sought after version. If you wanted to build a full wave rectifier out of them, you would likely need two.
All except for the earlier production large base version are identical. Buy jj gz34 5ar4 vacuum tubes online, in stock and ready to ship. Psvane 1pcs brand new 274b vacuum tube rectifier tube replace 5u4g 5z3 5ar4 u52. One brand new in box sovtek 5ar4 gz34 vacuum tube the sovtek 5ar4 gz34 is one of the most popular rectifier tubes in audio and guitar.
Rectifier tubes tagged 5ar4 gz34 5r4gy upscale audio. Rectifier tubes 5ar4 gz34 5r4gy tube basics and faq. Gz34 instead of a 5u4gb discussion in amp input normal or bright started by viking inla, jan 6, 2014. However the manual states this tube the 5ar4 may be replaced with the 5y3 rectifier tube. Tube datasheets here youll find a modest collection of datasheets for some popular tubes. We are happy to accept your order at and also through our call center. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. Gz34 instead of a 5u4gb fender stratocaster guitar forum. All bear the famous center hole in the guidepin, same production codes, and exceptional mullard quality which is second to none. The wide glass tube envelope is 32 mm in diameter and, excluding the io base pins, is 72 mm tall. The following are all manufactured by the mullard tube company in england. The gz34 isnt a very talked about tube, but it is one of the most common rectifier tubes found in audio, especially in guitar amps. My anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. It is indirectly heated but the cathode is tied to one side of the heater.
It has found wide use in tube radios and early guitar amplifiers of the fender champ type. Imax175ma, max capacitance60uf a gz32 sounds similar to a gz34 and a gz32 sounds alot better than a 5v4ga us made cary sla70ab amp modwright transporter quad ii matchless woo. Each model emulates the forward conduction resistance curve of the tube type it replaces and also has linear inrush current limiting to simulate the warmup of a tube rectifier, however, it is in the 1 to 2 second range, rather than the 7 to 9 seconds of a typical rectifier tube. To buy gz34 mullard branded raytheon kuhltube cryotreated. Helps extend the life of the other valves in the amplifier by allowing them to. Get a low price and free shipping on thousands of items. This tube is wellbuilt, sounds great, and has been a great rectifier for folks looking to break free from the typicak sovtek or shuguang offerings. These beauties carry the british raf military designations. A tube that gives lower voltage may not be able to handle the current of. The mullard really makes a difference in your hifi or guitar amp sound. Rectifier comparison and interchangeability chart kca.
Gz34 5ar4sovtek sovtek the sovtek gz345ar4 a very well made modern full wave rectifier. Vacuum tube 5ar4 gz34, jj electronics antique electronic. The gz34 is an example of a typical high current rectifier for small equipment use. I need to replace a gz34 rectifier tube and im shopping for reliability mostly. Tubes free delivery possible on eligible purchases. High output current and small size make this tube especially suitable for compact amplifier designs. Replacing the rectifier tube is a good way to get a different sound from your amp.
However, some things must be considered when changing rectifier tubes. Please do not buy this thinking its going to sound like a nos mullard. I am using them in a preamplifier that used 27s and 8 red leds for cathode bias and outputs to a 245 amplifier via 10k interstage. The reissue is now available with the same great performance without the high price that nos mullard gz34 tubes command. Like most retailers at this time, due to covid19, we may experience shipping delays on some orders. I now have a gz34 blackface rectifier tube in there, and low and behold, it sounds even betterlet the biasing ensue.