JJ 12AT7 / ECC81

The Sovtek 12AX7WA is a defacto standard in 12AX7 tubes for many years yet because of its high dependability and its low noise floor.

• The 12AX7EH provides high gain with ultra low noise and detailed, musical tone that rivals the most desirable NOS types.

• Slightly hotter than the #06 selection
• Selected and recommended for VOX AC 30 / 15  and similar amps.
• Price for one tube.

2 tubes, matched as pair

JJ developed a completly new tube which is compatible with the EL84. The difference lies in the around 25% decreased headroom. This will give you the benefit to get the often desired power amp overdrive at lower volume levels. We recommend this tube for low wattage amps to get a better sound at bedroom levels.

Please check the datasheet!

Files:

• Datasheet

• Type: Electrolytic can capacitor
• Capacitance: 47 µF
• Voltage Rating: 450 V
• Tolerance: - 20 % / +20 %
• Operating Temperature Range: - 25°C / + 105 °C
• Dimensions: Ø 16 mm x 25 mm
• Termination Style: radial
• Grid: 7,5

• Pri: 0-220-230-240 V (schwarz-gelb-lila-rot / black-yellow-purple-red)
• Sec 1: 250 V @ 0,12 A (red / rot)
• Sec 2: 6,3 V @ 3 A (green / grün)

• Power Rating: 0,125 W
• Voltage Rating: 150 V AC
• Tolerance: 20%
• Shaft: 6,3 mm, Solid Shaft

TT Selection: V1 - Low Noise
This tube is selected for sensitive input stages (V1)

Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube to be designated 7025. The original 7025 tube was a 12AX7 that was tested and selected for the lowest noise and microphonics for use in the critical first preamp stages of amplifiers where noise and microphonics could be an issue. In order to ensure that the 7025 specification is consistently met, Electro-Harmonix has redesigned the structure of the 12AX7 and has implemented construction techniques to ensure the absolute lowest noise and microphonics possible. In all samples tested, noise and microphonics could not be detected.

The Electro-Harmonix 7025EH has a mid-range that gives clarity and definition to the sound and a smooth top end for warmth and balance. With these characteristics, along with the exceptionally low noise and low microphonics, the Electro-Harmonix 7025EH will work equally well in vintage and modern high-gain guitar amplifiers, as well as sensitive phono preamps.

TT Selection: V1 - Low Noise
This tube is selected for sensitive input stages (V1)

The Ultimate 12AX7. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.