Mullard 12AX7 / ECC83
From our review: "Microphonics is not an issue despite the larger that average plate structure. The transconductance on my sample was the same as two NOS samples I measured. Not really high gain at all, but a real good noise floor and a nice smooth tone that doesn’t encourage ear fatigue the way some preamps can be."
The Mullard name and trademark have been acquired by the New Sensor Corporation. This new production Mullard 12AX7 tube is manufactured at their Xpo-Pul factory (also known as Reflektor) in Saratov, Russia. New Sensor is an American corporation and since taking ownership of this factory has been steadily improving the quality of current production tubes.
One other note about the construction of these tubes is they have filaments that are almost completely encased in the plate structure. They often don't "light up" when working properly. This is not a problem, it's normal for the reissue Mullard 12AX7 / ECC83.
Other Mullard tubes12AX7 Types
Additional Information and Downloads
Warranty Information and Return PolicyWarranty Period: 3 months
All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
Great Tube for pre amp
by Steven Eddy
I use this tube often for pre amps - wonderful full tone from our hand wired tube amps with this tube. This tube has also been used by us to wake up old Peavey and other tube amps.
Great current production 12AX7
This is a really nice sounding preamp tube. I've used this in both the Leak Stereo 50, plus in a Luxman SQ65. It's a shame there is no heater glow, as I find that, part of the whole valve amp experience, but soundwise, it's great.
by Thomas Mønsted
I just received my Mullard 12AX7 tubes...... You know what? They sound great in my pre-unison secundo. There was a huge difference from my Electro Harmonix. The Electro Harmonix sounded hard in mid-band and metal like in the treble. Mullard all came together, sounding smooth and 3-D. Thanks tube store for your good service....:-) Best regards Thomas
Put a MULLARD 12ax7 in a Silverface Twin--WOW!
Put one of these new Mullard 12ax7's in V2 on a Fender Silverface Twin Reverb...WOW, this thing sounded awesome...3 dimensional, fat, lots of presence and pick dynamics....liked it better than the new Tung Sol 12ax7....
This works well in conjunction with other preamp brands
I have the Mullard on V1 and Tungsol 12AX7 on V2 made my amp's gain stage sound very pleasing and less ear fatigue.. It balanced out the inherent shrill of the Tung-Sol with the warmer and 3D tonal characteristic of the Mullard.