EH 12AX7 / ECC83

4 tubes, matched as quad

The Sovtek EL84 series produces an unbeatable smooth, warm distortion sound. Excellent replacements in vintage VOX AC-30's and the like, very popular in Fender, Crate and Peavey amps.

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

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

Files:

• Datasheet

Spring Retainer EL84 / ELL844 and tubes with a similar size

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.

2 tubes, matched as pair

Beam power tube used in vintage Gretsch and Magnatone amplifiers.
This is a real 6973, not a rebrand of a "close" tube.

Files:
Datasheet

Superior large plate format Twin Triode, ideal for use in driver and reverb circuits. Offers superior dissipation compared to NOS versions of this tube.
Excellent 12AT7 choice choice for HiFi and guitar amp circuits.
Electro-Harmonix tubes are all new designs and are of excellent quality. Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.

Files:

• Datasheet

This item is discontinued. Please take item gc-ma-631

Texture and color just like the Marshall Cane and Orange Weaves, only slightly thinner and thus easier to handle.
Furthermore, the mesh size is a little wider, and therefore the damping of the highs is much less compared with the original fabrics.

• Size (W x L): ca. 70 x 100 cm (only available in this size)
• Material: 100% treated paper
• Price per pcs.
• Actual shades may vary.

Further information and notes on Grillcloth

• FAQ Grillcloth

JJ 6L6 - #16 - Mesa RED

• Corresponds to Mesa Color Code RED
• Price for one tube

FAQ: If I order two or more of these tubes, are they all "matched"?
Yes, the tubes are all "matched" and selected for the above amplifiers.

FAQ: Can I change the tubes myself or does anything need to be adjusted?
Adjustment work is not possible on the above amplifiers (unless a bias adjustment has been retrofitted). The exchange can therefore be done without any adjustment or measurement work.

Files:

• Datasheet

Very linear working 12AX7 / ECC83 with long anode plates and spiral heating, which makes the tube less sensitive to interference from AC heating.
We recommend this tube for audio and high-end amps as well as for "modern" Fender amps with more overdrive, but also as an input tube in old Marshall JCM800s.

Note: Tubes equipped with long plates are commonly associated with a "warmer" or "richer" sound, whereas those with shorter plates tend to deliver a "tighter sound". However, tubes featuring long plates exhibit increased sensitivity to vibrations and mechanical disturbances, rendering them less ideal for critical applications.

Files

• Datasheet