Dantimax - Remote control audio kits. DOA-12 Discrete Op-Amp. The DOA-12 is a high-performance, discrete operational amplifier well suited for demanding audio applications due to it’s low noise, high slew rate, high gain capability, high output capability, and operation over a wide range of power supply voltages.
It uses the standard discrete opamp 2520/990 footprint… a roughly 1”x1” device with (6) pins, a format commonly found and used in pro-audio gear. Running at +/-24Volts supply voltage, the DOA-12 is capable of reaching +26dBu output (loaded with a 600:600 output transformer). Running at a slightly lower +/-18Volts supply voltage, the DOA-12 still achieves an impressive +24dBu maximum output. If one uses the DOA-12 to drive an output transformer wired for 1:2, it is possible to create high-performance preamplifiers capable of reaching +32dBu output!
The DOA-12 operates as a Class A amplifier at low to two-thirds maximum output levels and switches to Class AB mode when operating at maximum output levels. Design Build Listen - DIY HiFi Components & Kits.
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