Vacuum Tube - 7025, Tube Amp Doctor, High Grade

Tube Amp Doctor (TAD)
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Vacuum Tube - 7025, Tube Amp Doctor, High Grade

In stock

Warm, clean tone with creamy overdrive!

PREMIUM selected quality for the most demanding amp stages. This tube works greatly for warm clean tones and creamy overdrive. We recommend this tube for the 1st gain stage and as input tube. It upgrades 12AX7A and ECC83 tubes and replaces E83CC tubes.

The HIGHGRADE Selection is the tip-of-the-top quality at the lowest noise (microphony, hum, hiss) level. Typically only 0.5-2% out of the whole production of this tube meet the HIGHGRADE requirements.

The TAD 7025 Highgrade can replace any ECC83, E83CC, 12AX7, 12AX7A, 12AX7M, 12AX7WA/WB/WC/LPS/EH, 5751 or 7025.

Q: When does a preamp tube become a Premium Selected tube?

A: All preamp tubes labeled Premium Selected have passed the following tests:
- Low Noise Test
- Microphonic Test
- Gain Test
- Sonic Tests
- Shock Tests
- Listening Tests
- Balanced Output Test

RoHS Compliant
Item ID:
Tube Amp Doctor (TAD)
Product Measurements
Body Height59 mm
Bulb Temperature160°C
Cathode Current8 mA
Cathode To Heater Potential150 V max
Dc Plate Voltage330 V
Grid To Cathode Capacitance1.7 pF
Grid To Heater Capacitance0.2 pF
Grid To Plate Capacitance1.5 pF
Heater Current0.15 / 0.3 A
Heater Voltage6.3 / 12.6 V
Item Diameter22.5 mm
Item Height56 mm
Negative Dc Grid Voltage-55 V
Plate Dissipation1.2 W
Plate To Cathode Capacitance0.3 pF
Positive Dc Grid Voltage0 V
Packaging Information
Packaging Dimensions3.25 in. × 1 in. × 1 in.
Weight (Packaging)0.038 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet (264.36 KB)Specification Sheet

Questions and Answers

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Asked by Anonymous on March 1st, 2019. 1 person subscribed to this question
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March 1st, 2019
Staff Member
These tubes are tested by the manufacturer and the test results are not specified by the manufacturer when sent to us as stock.
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Product Reviews

5.00 out of 5 based on 1 reviews
Micah - April 1st, 2019

These 7025’s offer the best balance of break-up and headroom. They can get aggressive if pushed or clean up if dialed back. Best tubes I’ve ever played.

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