12AU7 Made in Holland

Ramblin Ray · April 10th, 2008, 08:07 PM

Picked up a box on the side of the road today with about 20 of these in it.(also a couple of Tun-Sol 12AX7's!) What are they used for and who would be the manufacturer? Oh yea, and a couple NIB RCA 12AT7's!

Guitarslinger1 · April 10th, 2008, 08:30 PM

Made in Holland? Probably Amperex or Phillips.

Those are used in stereos, and some guitar amps.

The real prizes are the Tung Sol 12AX7s and the RCA 12AT7s.

Cool find!

nonvintage · April 10th, 2008, 08:32 PM

I have a 50's Gibson GA30 amp that uses those as a phase inverter. I have a GE 12au7a/6680 tube that I like in my tweed deluxe clone instead of a 12ay7, it cleans up the breakup for solos.

Ramblin Ray · April 10th, 2008, 08:48 PM

Quote:

Originally Posted by specialty guitars

Made in Holland? Probably Amperex or Phillips.

Those are used in stereos, and some guitar amps.

The real prizes are the Tung Sol 12AX7s and the RCA 12AT7s.

Cool find!

Yes, I did just find one that says Amperex.

Ramblin Ray · April 10th, 2008, 08:52 PM

I also found some 12AX7's that say made in Holland and are stamped "Electronics For Medicine"--wish I had a digital camera so I could post some pictures.

April 10th, 2008, 08:07 PM	#1 (permalink)
Ramblin Ray Tele-Meister Join Date: Mar 2003 Location: New York Posts: 413	12AU7 Made in Holland Picked up a box on the side of the road today with about 20 of these in it.(also a couple of Tun-Sol 12AX7's!) What are they used for and who would be the manufacturer? Oh yea, and a couple NIB RCA 12AT7's!

April 10th, 2008, 08:30 PM	#2 (permalink)
Guitarslinger1 Banned Tele-Holic Join Date: May 2005 Posts: 966	Made in Holland? Probably Amperex or Phillips. Those are used in stereos, and some guitar amps. The real prizes are the Tung Sol 12AX7s and the RCA 12AT7s. Cool find!

April 10th, 2008, 08:32 PM	#3 (permalink)
nonvintage Tele-Holic Join Date: Mar 2006 Location: San Diego Posts: 506	I have a 50's Gibson GA30 amp that uses those as a phase inverter. I have a GE 12au7a/6680 tube that I like in my tweed deluxe clone instead of a 12ay7, it cleans up the breakup for solos.

April 10th, 2008, 08:52 PM	#5 (permalink)
Ramblin Ray Tele-Meister Join Date: Mar 2003 Location: New York Posts: 413	I also found some 12AX7's that say made in Holland and are stamped "Electronics For Medicine"--wish I had a digital camera so I could post some pictures.