For some purposes the 5751 is a great preamp tube. I've been using them in one position or another ever since I've been using tube amps. JJ 5751 Vacuum Tube/Valve £ 12.95 The JJ 5751 has a slightly lower gain factor (30% down) than the 12AX7 tube and can be used as a substitute in the ‘ Tube Drive™ ‘ pedal and SR-71 ‘ Blackbird™ ‘ preamp to achieve more headroom before the onset of distortion.
JJ 5751 Preamp Tube. The JJ 5751 preamp tube can be used in most 12AX7 circuits to achieve more headroom. The JJ 5751 was designed as a “ruggedised” high mu, dual triode tube with similar specifications to the 12AX7. With 30% reduced gain, the 5751 is a fantastic way to tame a distortion stage and tone shape an amp. Jan 04, 2019 · The 5751 version of the 12AXY tube is a military version that is rugged and has a lower Gain of 70. The 12AT7. The 12AT7 is another very well known tube among guitar players. It has a much lower Gain output at 60, but what you lose in Gain you get back with more headroom, higher fidelity, and an increased current output. Oct 20, 2010 · I updated this to add the link to the RCA version as a second data sheet set. This will be a continuing series on vacuum tubes and amplifiers. Some folks do not realize that the 5751 vacuum tube produced today is little more than a 12AX7 that did not make the grade as a 12AX7. .....
Mar 25, 2013 · "Genalex" Gold Lion 12AX7 / ECC83 Some of you have been asking if I could make some of my tube testing available again. This is the first report that I have put out to the public for a while. The JJ GZ34S Rectifier is used in famous amps such as the Vox AC 30 Valve rectifiers are characterised by the ” sag” that they introduce which is a bit like compression. The result is a better sustaining note at the same volume as an amp with solid state power supply rectification. NEW GZ34S’s do give a better sound!. 12AX7 is a high gain tube that provides the wonderful tube sound with warmth in harmonics in many tube amps. There is a 12AX7 tube that's right for your gear in our vast selection! Designed for endurance and longevity for application in the audio industry. Wide asortment and models up to 560 V. Unique multi-section design.
"Ei-RC" - Electronic tubes factory Data Sheet ECC81/12AT7 Page 1 of 4 Telephone: +381 18 550 741 ECC81 is R.F. Double Triode Quick reference data • Anode current Ia=10mA • Transcoductance S=5,5mA/V • Amplification µ=60 Heating Heating is indirect by AC od DC, with serial or parallel supply. Please note that, in case of TWIN TRIODE, 12AX7 datasheet, 12AX7 circuit, 12AX7 data sheet : GEC, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors ...
5751 was the USA alternative to 12AX7 in demanding applications where extremely low noise and low microphonics were necessary. Some circuits may need alterations to use a 5751 tube. And gain is 30% lower on average, not ideal in phono stages. I'd give the new TungSol 12AX7 tubes a try, they're better than the JJ 12AX7 tubes. All about Tung-Sol Vacuum Tubes. Specifications, pictures, technical information.Tung-Sol tubes are quite simply the absolute best. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. The Sovtek 5751 is an affordable alternative to the 12AY7 used in original Fender tweed amps and can be subbed for a 12AT7 reverb driver tube. Special note for 5751 types: The 5751 is not a true 12AX7, but is often used in place of a 12AX7. They only have 70% of the gain of a 12AX7, and are often used to quiet down guitar amps that have too much gain.
The JJ Electronic 5751 – A lower gain ECC83 for Clean Sound ! The 5751 is a lower gain ECC83/12AX7. So if you want to get more headroom and that clean sound then this valve is deal for replacing the first valve that takes the inputs from your instrument. Title: 12AY7 Author: General Electric Subject: JA-FP-2001-12-01 Created Date: 12/1/2001 5:33:00 PM ECC83S - 12AX7, 7025. A.F. DOUBLE TRIODE ECC83S is 12AX7 high gain pre-amplifying double triode. Thanks to its design it also peforms with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end. Buy BUGERA T50-INFINIUM 50-Watt Cage-Style 2-Channel Amplifier Head with Infinium Tube Life Multiplier Silver multicolored, (T50INFINIUM): Heads - Amazon.com FREE DELIVERY possible on eligible purchases
I find that this JJ tube has good sound, but lower gain than other 12AX7's. Its gain is more like a 5751. In a Guyatone Tube Echo pedal, it provided too little gain. If you have an amp that is "too hot" these sound nice, and will calm down amps shipped with hot preamp tubes. A Comparison of Current Production 12AX7 Tubes. RCA and Sylvania first introduced the 12AX7 to the world in the late 1940s. Today, it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. Online Suppliers of vacuum tubes, sockets, capacitors, switches, enclosures, and related music electronic components to the South African market. Feb 03, 2017 · Now there is an exception, the 5751 was designed to have a mu of 70, and a plate resistance identical to a AX, the 5751 tube was specifically designed to be a lower-gain, plug-in replacement for the 12AX7. (it is not however considered an ideal replacement for the 12AT7, despite their similar gain factors)