Neumann M149 Tube (1996–present)
The first new Neumann tube microphone in over three decades - a K 49 capsule mated to transformerless circuitry, and a reissue that engineers actually trust.
Overview
Neumann announced the M149 Tube in 1996. According to Mix (November 1996, p.194), it had been more than thirty years since the company released a new tube condenser, the limited 1167 reissue of the fall '93 AES convention aside. The M149 is not a reissue at all. It's a hybrid, and a deliberate one: the K 49 capsule and headgrille borrowed from the classic M 49, married to the transformerless FET 100 circuitry developed for the TLM 50. Neumann's own advertising in EQ (1996, p.141) billed it exactly that way - "a modern microphone in the classic Neumann tradition" - and for once the marketing copy holds up.
The K 49 earned its reputation as the capsule inside the M 49, one of the microphones that defined the sound of recording in the postwar decades. Here it gets transformerless electronics. The tube operates as an impedance converter rather than as part of a transformer-coupled output stage, which lets the mic drive long cable runs without the sonic penalty that transformer coupling can introduce. Mix (October 1995, p.250) described the design intent bluntly - sidestepping the hysteresis, core saturation, and high-frequency phase shift that output transformers can produce. Some engineers call that progress and some call it heresy, and collectors fall on both sides.
Nine directional patterns are selectable via a slide switch on the front of the body. A seven-step high-pass filter on the rear handles cut-off adjustment in fine increments, enough to place the mic in a room without reaching for outboard EQ first. Self-noise is quoted at 11 dB(A) in Neumann's own advertising copy of the period, and the tube itself adds roughly 10 dB of gain at the capsule stage before the differential amplifier takes over. None of this is exotic by modern standards. In 1996 it showed that a tube mic could be quiet, flexible, and roadable.
The M149 turns up in studio gear lists with a persistence that suggests it earned its place rather than inheriting it. There's a pair at Inner Machine Studios alongside a trio of M147s, a single example at Talking House Studios next to a U87 pair and a TLM170, and another at Studio Hibiki listed between a U47 and an M147. In the field, it gets used the way a good LDC gets used: EQ documented one session where an M149 sat roughly twelve feet from the source and ten feet up to capture room ambience, later folded into the mix for dimension. Another engineer cited it, alongside a Gefell UM92 and a Brauner VM1, as one of the main "go-to" vocal mics on a record.
It is not a substitute for an M 49. The K 49 capsule gives it the family resemblance, but the transformerless circuit gives it a cleaner, faster character that some vintage-minded engineers find less forgiving. Owners report that the M149 rewards good rooms and punishes bad ones. The nine patterns and the filter are tools that make it usable across a session rather than a one-trick vocal mic.
The M149 never went out of production the way its ancestors did. It remains a current Neumann model, so the used market is a market in working tools rather than relics. Prices track condition and accessories more than mythology, and a clean example with its power supply and case is the thing to look for. The K 49 capsule is still one of the best ever made, and the M149 is the most practical way to put one in front of a source in a modern studio.
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