Building Valve Amplifiers Publisher: Newnes | ISBN : 0750656956 | August 16, 2004 | 368 pages | PDF | 14.9MBIf you actually intend to create, modify, restore or repair tube audio equipment, I would highly recommend purchasing Building Valve Amplifiers even if you are seasoned by many years of practical experience. I am convinced that all readers will be amazed at the quantity of new useful knowledge it contains.