Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Jwatts on October 29, 2016, 01:56:01 pm
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I bought this at a thrift store for $60 and love it. The only issue is I have no clue what it is based off of to be able to tweek it. Any ideas on what this could be built off of? I can tell it's a single ended el34 with 4 12ax7's. (http://i31.photobucket.com/albums/c371/gotemo83/Mobile%20Uploads/IMG_0814.jpg) (http://s31.photobucket.com/user/gotemo83/media/Mobile%20Uploads/IMG_0814.jpg.html)(http://i31.photobucket.com/albums/c371/gotemo83/Mobile%20Uploads/IMG_0816.jpg) (http://s31.photobucket.com/user/gotemo83/media/Mobile%20Uploads/IMG_0816.jpg.html)(http://i31.photobucket.com/albums/c371/gotemo83/Mobile%20Uploads/IMG_0815.jpg) (http://s31.photobucket.com/user/gotemo83/media/Mobile%20Uploads/IMG_0815.jpg.html)(http://i31.photobucket.com/albums/c371/gotemo83/Mobile%20Uploads/IMG_0816.jpg) (http://s31.photobucket.com/user/gotemo83/media/Mobile%20Uploads/IMG_0816.jpg.html)(http://i31.photobucket.com/albums/c371/gotemo83/Mobile%20Uploads/IMG_0809.jpg) (http://s31.photobucket.com/user/gotemo83/media/Mobile%20Uploads/IMG_0809.jpg.html)
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Drawing a schematic would reveal more than the pics. Even then you may never know. This could just be a 'spare parts' amp that may not be based on any particular amp. It's odd that a push pull transformer was used for this single ended amp.