| Content | GROOVE TUBES GT 12AT7 PREAMP TUBE
The Groove Tubes GT-12AT7 preamp tube is manufactured to the highest quality JAN spec. NOS, made in Russia for extremely long life.
Used widely in most U.S.-made amps and, in particular, Fender amps. Fender amps with reverb use 2 - 12AT7s -- one for the reverb drive stage, and one as a phase inverter to drive the push/pull output stage. The makeup of the 12AT7 is very similar to the 12AX7 and it can be substituted for a 12AX7 in a pinch. Some players prefer the 12AT7 in the driver stage of a Marshall for a cleaner, brighter tone. (The driver or phase inverter is the 12AX7 located nearest the power tubes.) The 12AT7 is rarely used in a tone-generating stage, but rather in function stages, so the Groove Tubes GT-12AT7 is selected for durability.
Country of origin: Russia | A rugged russian tube by Electro Harmonix.
Some claim the 6L6EH has been "Modeled after the vintage RCA 6L6GC "blackplate" and the 6L6EH features large plate dimensions".
To see what a real blackplate looks like see the picture on the right showing a RCA and a TAD blackplate small bottle 6L6.
Both are real black plate constructions and great for vintage guitar amps for pleasing smooth and fine complex tone structure. Best for any classic Fender Amplifier.
The 6L6EH is a very good choice for more modern hard rocking guitar sounds and recommened for this.
Tube Type 6L6/5881
Socket: Octal(8pin)
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Great warm clean tones, strong bass, punchy mids and fat overdrive with smooth top end.
No Microphony, No Hum - Clean Warm Tone, Punchy Mids, Fat Overdrive!
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
HIGHGRADE SELECTION
But only those tubes which pass these tests best are labeled Highgrades.
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.
| Tube Type: |
12AX7/ECC83/7025 |
| Socket: |
Noval(9 Pin) |
| Selection: |
Highgrade |
| 5751 can be used in most 12AX7 circuits to achieve more headroom.
It has a lower gain about 70% than the standard 12AX7. Good to rope the gain of a high gain amplifier.
| Tube Type: |
5751(12AX7/ECC83) |
| Socket: |
Noval(9 Pin) |
|
Selected ECC83 for the big & warm clean sounds (great for HiFi too!) and mellow top-end when pushed to overdrive. Our recommendation if you want to emphasize punchy mids. Especially great when pushed into a fat overdrive.
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
Premium Selected
We call the tubes SELECTED which have passed above tests and thus qualify as reliable all-round tubes of their type.Typically this is around 30-60% from a batch that receives the SELECTED label from TAD.
For applications in particularly sensitive functions such as V1 or input stage with combo amps, V1 in high-gain amps, tube microphones and phono preamps, we recommend using the respective HIGHGRADE selection
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.
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 |
| Socket: |
Noval(9 Pin) |
| Selection: |
Premium |
| Description
NN095-Electro Harmonix 12AX7 / ECC83
Vacuum tube 12AX7ЕН, 12AX7SV is a miniature twin triode with equipotential cathodes, designed to amplify low frequency voltage in radio engineering devices. Top choice for gutiar / bass amp application with all the right ingredients. Excellent tonal bal-ance, harmonic content, low noise floor, and low microphonics. The tone is more vintage sounding, and also does very well in audiophile application. The 12AX7-EH tube has a nice balanced sound, a very low noise floor and excellent perfor-mance in terms of microphonics. The lack of microphonics is due in part to the return of a shorter plate structure and better materials.
- Bass Amplifier application
- Preferred by guitar technicians for re-tubing and upgrading, but equally well suited for HiFi applications
- High Gain, Low noise, low microphonics
- High Quality and Durable
- High Quality and Durable
- 12AX7 /7025 / ECC83 equivalent
- Made In Russiα
| Tube Type: |
12AX7/ECC83/7025 |
| Socket: |
Noval(9 Pin) |
|
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