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CED Sovtek T 12AX7LPS SOVT Vacuum Tube 12AX7LPS Sovtek P1621575CED-T-12AX7LPS-SOVT https://cdnimages.opentip.com/full/CED/CED-T-12AX7LPS-SOVT.jpg Sovtek T 12AX7LPS SOVT Vacuum Tube 12AX7LPS Sovtek Manufacturer Part Number: T-12AX7LPS-SOVT9 pin miniature preamp tube (Amplification Factor = 100). This Russian tube is full bodied and well balanced. It has a high gain with a very smooth presentation. In overdrive, it is not quite as defined as the 12AX7-S-JJ, but it offers more crunchy fizz. For more information about our 12AX7 tubes, see our tech corner article on 12AX7s.Measurements and Specs Amplification Factor94 Capacitance, Cathode to Heater5.0 nF Capacitance, Grid to Cathode1.6 pF Capacitance, Grid to Heater1.6 pF Capacitance, Plate to Cathode0.46 pF Capacitance, Plate to Heater0.46 pF Capacitance, Plate to Plate600 pF Capacitance, grid to plate1.7 pF Grid Circuit Resistance (Rg), Fixed Bias1 MΩ Grid Circuit Resistance (Rg), Self Bias2.2 MΩ Grid Reverse Current0.2 μA Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V Heater to Cathode Voltage200 V Plate Current (Ia)8 mA Plate Dissipation (Wa)1.2 W Plate Resistance (Ra)56 kΩ Plate Voltage (Ua)330 V Transconductance (S)1.7 mA/V Packaging Dimensions1 in. × 1 in. × 3 in. Weight (Packaging)0.037 lbs. Files Specification SheetAll Models 1621575 683274021287 0.0400lbs 0.00 0.00 0.00
Sovtek
29.1000 2025-04-19 In Stock
customer review - by , June 6, 2011
5/ 5stars
I replaced the original Jet City JCA20H Chinese made tubes with the 12AX7LPS tubes since they were pretty cheap and well reviewed. They have a shielding that is supposed to help with the noise and I think they did help a little. It does not glow brighter but that does not matter to me. What does matter is the nice tone quality I get from these tubes. I also get more gain and breakdown while keeping a "musical" tone that I like. I play a wide range of sounds so I ofter use stomp boxes and they react well to those as well as the natural overdrive.
customer review - by , April 4, 2011
5/ 5stars
Rating tubes can be a tricky thing. I can guarantee there probably aren't too many preamp tubes you could mention that I haven't tried out including many NOS, 12AU7, 12AT7, 12AY7, 12AY7WA, etc. I didn't have very good results at all with this tube in bigger tube amps (e.g. 100 watt Marshall TSL100) but after trying out literally dozens of different type tubes in my small 1 watt tube amp (Hughes & Kettner Blues Master) this tube outshined the rest in regards to the tone I was after and I am a tone fanatic. I give it 5 stars easily :)
customer review - by , March 3, 2011
5/ 5stars
This is a great tube to through in the Phase inverter section of your preamp. I have a Peavey VK and it's one of my web communities recommended tubes for the V3 position Phase inverter. The tube is known for not burning very bright so be aware of that. As long as you have signal your good to go. Great tube.
customer review - by , February 2, 2011
5/ 5stars
I researched replacement preamp tubes for my Peavey ValvKing 112 and several suggested this tube for the V3 Phase Inverter (tube closest to the power tubes in the back of the amp). Here is a link to a good discussion: . I think this tube sounds much better than the Electro-Harmonix 12ax7 tube it replaced.
customer review - by , April 4, 2010
1/ 5stars
I've tried many preamp tubes and this one isn't my favorite.While it was working it was very dark and kinda messy / sloppy.After about a day or two the tube went bad. nice.Would not recommend
customer review - by , February 2, 2010
5/ 5stars
It's not quite a telefunken, but between this and a Tesla ECC803S, this is about as good as new production tubes will get.
customer review - by , February 2, 2010
5/ 5stars
Used a pair of these tubes in a phono preamp. These have good balance and a very satisfying tube sound. Good gain and very little hum. Only drawback is that because the filament is encased in the plates, they don't have much of that tube glow.
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Sovtek T-12AX7LPS-SOVT Vacuum Tube - 12AX7LPS, Sovtek

stars Rating 4.5 | 7 reviews
Brand Sovtek
See other products from CED
UPC: 683274021287
SKU: CED-T-12AX7LPS-SOVT
Price: $29.10
Quantity:
In Stock
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Product Description

Manufacturer Part Number: T-12AX7LPS-SOVT

9 pin miniature preamp tube (Amplification Factor = 100). This Russian tube is full bodied and well balanced. It has a high gain with a very smooth presentation. In overdrive, it is not quite as defined as the 12AX7-S-JJ, but it offers more crunchy fizz. For more information about our 12AX7 tubes, see our tech corner article on 12AX7s.

Measurements and Specs




Files

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
4.5 out of 5
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By Bama blues man
Date: June 21, 2011
I replaced the original Jet City JCA20H Chinese made tubes with the 12AX7LPS tubes since they were pretty cheap and well reviewed. They have a shielding that is supposed to help with the noise and I think they did help a little. It does not glow brighter but that does not matter to me. What does matter is the nice tone quality I get from these tubes. I also get more gain and breakdown while keeping a "musical" tone that I like. I play a wide range of sounds so I ofter use stomp boxes and they react well to those as well as the natural overdrive.
Rating: 5 stars [5 of 5 Stars!]
By acio
Date: April 04, 2011
Rating tubes can be a tricky thing. I can guarantee there probably aren't too many preamp tubes you could mention that I haven't tried out including many NOS, 12AU7, 12AT7, 12AY7, 12AY7WA, etc. I didn't have very good results at all with this tube in bigger tube amps (e.g. 100 watt Marshall TSL100) but after trying out literally dozens of different type tubes in my small 1 watt tube amp (Hughes & Kettner Blues Master) this tube outshined the rest in regards to the tone I was after and I am a tone fanatic. I give it 5 stars easily :)
Rating: 5 stars [5 of 5 Stars!]
By Andrew M. Matas
Date: March 19, 2011
This is a great tube to through in the Phase inverter section of your preamp. I have a Peavey VK and it's one of my web communities recommended tubes for the V3 position Phase inverter. The tube is known for not burning very bright so be aware of that. As long as you have signal your good to go. Great tube.
Rating: 5 stars [5 of 5 Stars!]
By D Potter
Date: February 17, 2011
I researched replacement preamp tubes for my Peavey ValvKing 112 and several suggested this tube for the V3 Phase Inverter (tube closest to the power tubes in the back of the amp). Here is a link to a good discussion: . I think this tube sounds much better than the Electro-Harmonix 12ax7 tube it replaced.
Rating: 5 stars [5 of 5 Stars!]
By Jeremy SCHLALLER "6L6 Lover"
Date: April 07, 2010
I've tried many preamp tubes and this one isn't my favorite.While it was working it was very dark and kinda messy / sloppy.After about a day or two the tube went bad. nice.Would not recommend
Rating: 1 stars [1 of 5 Stars!]
By Dave Tainer (New York City)
Date: February 17, 2010
It's not quite a telefunken, but between this and a Tesla ECC803S, this is about as good as new production tubes will get.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 7 reviews
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