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geekhack Community => Off Topic => Topic started by: y11971alex on Wed, 03 August 2016, 13:31:54

Title: IBM Headphone Amps
Post by: y11971alex on Wed, 03 August 2016, 13:31:54

Recently I bought a mini-amp with vacuum tube for my HD700 headphones of Sennheiser.  The stock tube was serviceable but not ideal, so I've been looking at replacement tubes available for a reasonable amount of money, and I came across this:

http://www.ebay.ca/itm/GE-6211A-five-star-VINTAGE-SINGLE-TUBE-BRANDED-IBM-252551-long-life-12AT7-12AU7-/400816548372?hash=item5d52872a14:g:BOUAAOSwj0NUe4YB

I'm known in the neighbourhood for my proclivity for IBM keyboards, and now I'm considering installing an IBM tube on my amp.  IBM should really send me a badge or something like that.  :D

Title: Re: IBM Headphone Amps
Post by: tp4tissue on Wed, 03 August 2016, 13:44:34

This will increase your WPM for sure.

Title: Re: IBM Headphone Amps
Post by: xtrafrood on Wed, 03 August 2016, 17:53:45

So the Vacuum Tube is made by General Electric but branded for use in the older IBM systems?

(https://upload.wikimedia.org/wikipedia/commons/2/24/Women_holding_parts_of_the_first_four_Army_computers.jpg)
http://vacuumtubesuperstore.com/ibm.html (http://vacuumtubesuperstore.com/ibm.html)