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| Neumann M150 Omni Tube Mic |
At $5,300 (including suspension-mount, vintage-style power supply, multiconductor cable and aluminum flight case), the Neumann M150 small-diaphragm, transformerless, tube condenser microphone will probably not be found in many basement studios. Perhaps more relevant than its cost, the M150's fixed-omni pattern makes it a less than desirable choice for recording in small spaces with challenging acoustics — the mic is quite capable of “hearing” exactly how good or how bad a room sounds.
However, Neumann's operating instructions for the M150 note that the mic is especially suited for Decca Tree recording (see below). Because that configuration requires three M150s, anyone whose microphone budget is less than $15,900 can stop reading here. But, if you're looking for a reliable method for producing a stable stereo image that will hold up throughout the application of Dolby and other surround sound matrix systems, the Decca Tree technique is worth examining.
