Altec 1566A Preamp. 12AX7 based, rackmount three stage microphone preamlifier. 6 page manual and schematic. 9.95
Altec 250 SU broadcast audioconsole module literature and pre amp schematics. Brochure featuringthe 250 console with schematics for the Altec 458A 12AY7A tube typepreamplifier and the 459A tube type line amplifier. 26 pages (this isnot a complete console manual - but focuses on the highly regarded preamplifier console modules. 18.95
Altec 9470 and 9550A solid state line amplifier and power supply manual and schematic. 10 pages 9.95
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