Vacuum Tube - 12AX7LPS, Sovtek

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Vacuum Tube - 12AX7LPS, Sovtek

In stock

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.

RoHS Compliant
Item ID:
Product Measurements
Amplification Factor94
Capacitance, Cathode To Heater5.0 nF
Capacitance, Grid To Cathode1.6 pF
Capacitance, Grid To Heater1.6 pF
Capacitance, Grid To Plate1.7 pF
Capacitance, Plate To Cathode0.46 pF
Capacitance, Plate To Heater0.46 pF
Capacitance, Plate To Plate600 pF
Grid Circuit Resistance, Fixed Bias1 MΩ
Grid Circuit Resistance, Self Bias2.2 MΩ
Grid Reverse Current0.2 μA
Heater To Cathode Voltage200 V
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current8 mA
Plate Dissipation1.2 W
Plate Resistance56 kΩ
Plate Voltage330 V
Transconductance1.7 mA/V
Packaging Information
Packaging Dimensions1 in. × 1 in. × 3 in.
Weight (Packaging)0.037 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet (595 KB)Specification Sheet

Questions and Answers

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Asked by Anonymous on March 9th, 2017. 1 person subscribed to this question
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Matt H.
March 9th, 2017
These tubes have a balanced eq and are nice and smooth.
Asked by Anonymous on May 8th, 2017. 1 person subscribed to this question
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Matt H.
May 10th, 2017
These tubes are not matched or balanced and this is service we do not offer.
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Product Reviews

5.00 out of 5 based on 3 reviews
Little Jerry - July 21st, 2018

The perfect current production tube for the phase inverter slot in my Peavey Classic 30 amp. It came highly recommended by trusted sources and did not disappoint. I'm on my third Sovtek 12AX7LPS as I change out the PI tube whenever I change the power tubes. Great tube at a great price.

harleytech - May 4th, 2017

A+ ! Great Tubes ! I am using these in the V3 PI stage in both my Marshall Plexi Cloan Amps (Metro Builds) These tubes work great, Where others didn't. I will be buying these again just to have on hand.

ScottMarlowe - November 26th, 2014

Currently using this as PI in both my Peavey Classic 50s and I'm very happy with it there. Full bodied lush tone, can really drive the output section well. Also have used it with some success in V2 (lead) position where it's quite good, but a little doesn't have enough "hair" for that position.

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