Don Sach's pre amp
Pesky_Rabbit, From a derivative stand point, Don Sachs has acknowledged that the inspiration for his preamp came from Roy Mottram's SP-14 preamp. Indeed, Roy mentions Don in his website so their relationship is very solid. http://www.tubes4hifi.com/SP14.ht Frankly, 90% of front end gear is a derivative design from earlier designs. Don currently is a devotee of these 6SN7 tubes: Linlai E-6sn7 tubes. I just ordered a quad of them. The quad cost ~$375 plus $55 for shipping from China. |
I am aware of him crediting the SP-14, but someone with his knowledge of electronics would also be acutely aware that circuit is a straight copy of an Aikido. Given that this topology is well known, has been published in great detail, and has a name and an owner who supplies pc boards and kits for its construction I think it is rather disingenuous of him not to recognise it as such. By crediting the SP-14 as the inspiration for his circuit he sidesteps the issue completely |
