OMA has a very different approach to building tube ampllfiers than any other company.
Initially, we created exceptional loudspeakers of extremely high efficiency. This means only a few watts are needed to create the same level of sound that could take a hundred watts with a conventional loudspeaker. It also means that an amplifier must have a great deal of sonic purity because such speakers magnify the first few watts the amplifier produces. We found that no company today producing tube amplifiers were making products which communicated the musical experience we sought.
We furthermore wanted to create a seamless, bespoke experience for OMA customers who would never have to worry again about the compatibility and coherence of their electronics with their speakers. Our amplifiers are designed to be used with our extremely high efficiency speakers, as they are designed and voiced using those speakers.
OMA amplifiers are designed as integrated units which do not require separate preamplifiers, which further increase the complexity of an audio system, and can create a host of problems. We simply build the preamplifier into our amplifiers. Every OMA amplifier design has a gain control and source selector, though we can customize any unit. Our PD1 phonostage or PD1 Pre with buffered output will drive any of our amplifiers to full output, as will most digital sources.
Putting together a complete OMA system avoids the pitfalls of mixing and matching components from various manufacturers hoping it all works together. OMA is the only company in the world producing its own line of high efficiency speakers and a line of matching electronics. Because of that, you can rest assured your audio system is perfectly matched from signal to speakers.