Please have a look of my recently-bought DR-504, serial number 7916 - with a "tested 30-4-75" sticker. What do you think of it?
It has no sound-issues whatsoever but compared to my DR-103 the sound is slightly thinner and with less 'resolution' / clarity.
Maybe this has to do with the tubes, they seem warn-out. I do not know about the caps.
Preamp section: 1 Valvo, 2 Mullards + 1 tagged "S-S....". Output section: 1 Valvo + 1 unknown
thank you !
now the pics... Hope you enjoy them !
photos 00 - 03
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/01back1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/02frontcaps1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/03front1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/03front1.jpg)
board photos 04-07
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/04board1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/05board2.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/06board3.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/07cap_board.jpg)
transformers & caps
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/08artpatridge.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/09caps_left.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/10caps_right.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/11caps_top.jpg)
serial no. & sticker
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/12serial1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/13side1.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/14sticker_sticker_closeup.jpg)
front panel-close up on broken indicator lamp-cover
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/15panel.jpg)
..and finally, close-ups on the tubes
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/16ELs.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/17tubescloseup.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/18preampcloseup2.jpg)
![Image](http://i91.photobucket.com/albums/k308/nicolas_ath72/myhiwatt/19preampcloseup3.jpg)