Vacuum Tube - 7025, Redbase, Tube Amp Doctor, High Grade

Vacuum Tube - 7025, Redbase, Tube Amp Doctor, High Grade

Tube Amp Doctor (TAD)
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The all-new TAD 7025 / E83CC Redbase Highgrade is carefully selected for all the demanding gain stages in any guitar or headphone amp, tube microphones or the extremely sensitive phono preamp-positions in audio amplifiers. Tonally, this tube produces fine, airy, silky and pleasant highs, a complex and dense midrange with clarity and definition in the low end - providing maximum smoothness and zero microphonics. Great warm cleans and creamy overdrive.

Fine, unobtrusive highs, complex, dense mids and clear real bass. Selected for demanding applications for maximum smoothness and zero microphonics - even with very sensitive input stages of high-gain amplifiers. Ideally suited and our clear recommendation for the 1st gain stage of guitar amps, headphone amps, tube microphones and for the extremely sensitive phono preamp-stages of audio amplifiers.

In terms of sound, this TAD 7025 / E83CC Redbase stands for maximum transparency and depth definition and puts an end to musty or sappy highs. Airy, silky highs combined with tight but by no means overemphasized bass are the hallmarks of this 7025 Highgrade.

It supports the traditional Fender® tone and brings more liveliness and brilliance to an AC30®. Your Boogie® or Marshall® will benefit, too. The TAD 7025 / E83CC REDBASE® can replace any ECC83, E83CC, ECC803S, 12AX7, 12AX7A, 12AX7M, 12AX7WA/WB/WC/LPS/EH, 5751, 7025, CV492 and CV4004. Also replaces the MESA® SPAX7-A.

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
SKU:
T-7025-RB-TAD
Item ID:
046716
Brand:
Tube Amp Doctor (TAD)
RoHS Compliant
Approximate net weight12 g
BaseE9-1, Small Button 9 Pin
Cathode-to-heater potential, max.170 V
Cathode Current8 mA
Coolingconventional
Diameter22.5 mm
Direct interelectrode capacitances, max. Grid to cathode1.9 pF
Direct interelectrode capacitances, max. Grid to heater0.3 pF
Direct interelectrode capacitances, max. Grid to plate1.8 pF
Direct interelectrode capacitances, max. Plate to cathode0.5 pF
Heater Current Parallel0.35
Heater Current Series Current0.18
Heater Voltage Parallel (AC or DC)6.3+/-0.5
Heater Voltage Series (AC or DC)12.6V +/-1.0
Height56 mm
Max. Bulb temperature (surface hottest point)165°C
Max. DC plate voltage330 V
Max. Negative DC Grid Voltage-55 V
Max. Plate dissipation1.2 W
Max. Positive DC Grid Voltage0 V
Operating PositionAny
Rg-k max.2.2MΩ
Seated height49 mm
Packaging Information
Packaging Dimensions3.25 in. × 1 in. × 1 in.
Weight (Packaging)0.0375 lbs.
PDF: DatasheetAll Models

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PDF: Datasheet Datasheet250.34 KB
Questions? Contact us at [email protected], or give us a call at 480-755-4712