||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; ga('create', 'UA-177780411-1', 'auto'); ga('set', 'forceSSL', true); ga('set', 'anonymizeIp', true); ga('require', 'displayfeatures'); ga('require', 'cleanUrlTracker'); ga('require', 'outboundLinkTracker'); ga('require', 'ec'); ga('send', 'pageview'); ga('set', 'nonInteraction', true); setTimeout("ga('send', 'event', 'read', '20 seconds')", 20000); 7025 HIGHGRADE TAD Premium Selected

7025 HIGHGRADE TAD Premium Selected

From €36.90 *

*Prices incl. VAT plus shipping costs

In Stock, delivery time approx.1-4 working days (Within Germany)
     The delivery times for shipping abroad can be found here.

Premium Matching:

  • RT010
  • 2.5x2.5x8 cm
  • 0.01 kg
  • 4251594900115
Warm, clean tone with creamy overdrive!   PREMIUM selected quality for the most... more
Product information "7025 HIGHGRADE TAD Premium Selected"
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. Tipically only  0,5-2% out of the whole production of this tube meet the HIGHGRADE requirements.
NOTE: due to extreme demanding TAD-Selection criteria, the availability of this tube is limited. Please check the information about availability.
The TAD 7025 Highgrade can replace any ECC83, E83CC, ECC803S, 12AX7, 12AX7A, 12AX7M, 12AX7WA/WB/WC/LPS/EH, 5751, 7025, CV492 and CV4004
equivalent (same built) for MESA® SPAX7-A
DISTINCTION from RT093-HG 7025WB and RT030 7025 / E83CC HIGHGRADE:
Compared to the RT030 and RT093-HG, the RT010 has a smoother overall responce and better linearity qualifiying for natural clean tones and relaxed HiFi audio listening. The RT093-HG shows a little more edge in the high-mid range. As a result, it asserts itself tonally very well, which makes perfect sense in a band structure.
RT030 is emphasising the midrange a bit more and thus brings more warmth and a little less brilliance and depth definition than the RT010 and RT093-HG.
Due to their tonal structure the RT093-HG and the RT030 are even less prone to microphonics than the RT010 which qualifies these for use with extremely microphonic-critical amps.
The RT010 has the lowest floor noise of these 3 which might be espicially important for use in tube microphones and audio system input stages.


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
But only those tubes which pass these tests best are labeled Highgrades.Typically this is approx. 3-10% from a production batch that qualifies for the HIGHGRADE rating from TAD.
Due to the very high selection requirements, this article is temporarily only available to a limited extent! Please note our shop-information on availability.
Matching and Selecting Options for Preamp Tubes
Matching in Pairs for preamp tubes means that two tubes show identical gain, hence, four characteristically identical systems.
This matching method includes our Balance-Selection. We highly recommend this matching method for hi-fi systems and all stereo applications.
TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties)
for the quality criteria mentioned above.
Tube Type: 12AX7/ECC83/7025
Selection: Highgrade
Socket: 9 Pin(Noval)
Read, write and discuss reviews... more
Customer evaluation for "7025 HIGHGRADE TAD Premium Selected"
1 Dec 2018

The Phono preamplifier I made there is about ten years already, is based on the Marantz Model 7 scheme. Three 12AX7 tubes are used, two "V1" for Right & Left, and "V2" in Cathode Follower. In order to optimize this well-known installation, I chose Mcap / Mundorf / Audyn Cap and Stiroflex capacitors.

More complicated, was to make the right choice, and find the right tubes to complete this Preamp.

After an email exchange with Stefan and Andreas, proposing the 7025 HIGHRADE TAD (RT010), I make the choice for this Tube in "V1" while keeping my JAN Philips 12AX7WA in "V2" (my favorite in this position ... ...).

Once again, the Tube Amp Doctor team was convinced and very well oriented.

Since these tubes are in use on my Phono Preamp, I left out my CDs.

30 Nov 2013

I put this fabulous tube in my v1 princeton reverb!! AAMAZING sound, sweet, warm, high definite notes, improve sound quality and sustain, if you wanna somethin that make your amp sound like a true amp in order to get the guitar sound itself buy this tube!congratulations TAD.

24 Sep 2012

Slightly cleaner than the Philips 12AX7 it replaced in my Silverface Champ (1973). It has more punch and clarity, and the drive is more detailed. No more microphonic issues.

It is still running in, but is getting better every hour!

3 Sep 2010

Absolutelly a must if your V1 goes microphonic, specially in small combos but, sonically, it sounds to me a bit sterile, too much refinated.

10 Jan 2005

My Mesa Triaxis needs 5 tubes, and the first two (1st gain stage) now I use TAD 7025 HIGHGRADE Premium Selected giving to my Triaxis warm clean tones and creamy overdrive!!!

I really recommend these tubes for who need a great professional sound.

26 Oct 2004

Le valvole in questione sono molto robuste con un sound incomparabile


26 Oct 2004

Le valvole in questione sono molto robuste con un sound incomparabile


26 Oct 2004

complimenti per il sito e' molto bello

11 Oct 2004


On my DeVille I replaced all the old 7025 (URSS made, originally installed by Fender) with the TAD 7025: now the sound comes out fastener, more sustained. On drive channel things even goes better, making the gain coming earlier. New power, more than a new DeVille

Write an evaluation
Please verify your testimonial by clicking on the link sent to your email after submitting your text.

The fields marked with * are required.

Tube Amp Doctor GmbH
V-MC1 TAD 1nF 630VDC Mustard Cap  (1nF = 0.001uF)

From €1.20 *
Tube Amp Doctor GmbH
V-20550AL TAD Audio Cap 20uF @ 550V 25x50mm
TAD Audio Caps

From €8.25 *
Tube Amp Doctor GmbH
Z-FUSE Sicherungen

From €0.63 *