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Sovtek 12AX7LPS
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All user reviews of 5/5 for the Sovtek 12AX7LPS

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  • MountAnDewMeMountAnDewMe

    The best 12ax7 from Sovtek

    Sovtek 12AX7LPSPublished on 07/29/12 at 14:52
    If you are like me you have probably tried many different tubes over the years. I had a bad experience with Sovtek 12ax7 tubes in the past and found them to be very unmusical. The experience left a bad taste in my mouth for the name for years. A few years ago I took the advice of a trusted retailer who called them "One of the finest 12ax7 builds I have seen in modern production." I replaced the tubes in my preamp with them and was simply shocked at how good they really did shine.

    The main differences in this line of 12ax7 are denoted by the LPS in the name. It refers to the use of long plates and a spiral wound filament. These tubes produce a very rich tone across the use…
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    If you are like me you have probably tried many different tubes over the years. I had a bad experience with Sovtek 12ax7 tubes in the past and found them to be very unmusical. The experience left a bad taste in my mouth for the name for years. A few years ago I took the advice of a trusted retailer who called them "One of the finest 12ax7 builds I have seen in modern production." I replaced the tubes in my preamp with them and was simply shocked at how good they really did shine.

    The main differences in this line of 12ax7 are denoted by the LPS in the name. It refers to the use of long plates and a spiral wound filament. These tubes produce a very rich tone across the useable frequency spectrum and are designed to reduce hum in an AC circuit. It is a quality tube in a preamp or for use as a phase inverter. Just be sure to order a tube with balanced triodes for the PI slot, but that goes for any tube in that position. The only downside to the tube is inherent to the long plate design. If you are using them in a combo where they will be subjected to high vibrations they may develop micro phonic problems quickly.

    They function well in all applications I have tried them in. In a clean channel they sound full and warm, while not being muddy. The mids are complex and satisfying. The highs have just enough shimmer to make them pleasurable, not harsh like some older productions from Sovtek. These tubes do especially well in a high gain situation and seem to go a bit farther than most other brand. They seem to compress a bit less and as a result offer more useable gain while retaining their tone. I find the lows to be well defined under these circumstances. The mids are well balanced, and the highs very complimentary neither smooth or harsh but just right to my taste.

    There are many fresh new builds available today that I will eventually get around to trying. Many of them are from the New Sensor Company which owns a lot of the branded tube companies we now have available to us. The quality from their plants has risen over the years, which is good news to all of use tube amp users. With that being said I will always have some Sovtek 12ax7LPS tubes in my tube locker whether or not they are in my amp or not. They have proven to be a valuable component to me over the past few years and is the tube I use as "the bar" when I preview others.
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  • Guignol84Guignol84

    Sovtek 12AX7LPSPublished on 04/24/07 at 05:36
    (This content has been automatically translated from French)
    So voila, it's a can within a week I instaled the little "small lights" on my JMP 2204. In fact I read that the lamps (preamp) equipped with large plates such as LPS offer a better attack, one can bite. Well, I quite agree. For my part I would say that these lamps give a better definition of the saturation of the preamp when we want it to be important and they actually give a little more aggressive. Atention! do not expect to transform your old Marshall Mesa! I could compare the 12AX7 WA has the same brand, but chages, although subtle, are exactly what I wanted: I play a Fender Tele and two boosters (Seymour Duncan and mxr) to boost the signal from the grate without altering the personality…
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    So voila, it's a can within a week I instaled the little "small lights" on my JMP 2204. In fact I read that the lamps (preamp) equipped with large plates such as LPS offer a better attack, one can bite. Well, I quite agree. For my part I would say that these lamps give a better definition of the saturation of the preamp when we want it to be important and they actually give a little more aggressive. Atention! do not expect to transform your old Marshall Mesa! I could compare the 12AX7 WA has the same brand, but chages, although subtle, are exactly what I wanted: I play a Fender Tele and two boosters (Seymour Duncan and mxr) to boost the signal from the grate without altering the personality. Result, 12ax7WA struggled to manage the level of output generated by the huge boost '(low CRADA). LPS seem perfectly handle it, so much so that I can mount the preamp knob to 9 without vomiting in my rooks (impossible with the WA).

    In short: Ideal if you like the old vintage sound very full and you are a fêllés may like me to want the power of a LessPaul with the personality of a Teloché. I put 9 because I can only element of comparison.

    So sorry my case is not too general but it's experience!
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