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Neumann M 150 Tube Microphone Pair - Used  From Neumann

A rare opportunity to save thousands and acquire a gorgeous, barely used sequentially serial-numbered pair of one of the finest production microphones available at any price.  


Our product photos are the actual, specific serial number for sale!

This specific item was photographed by us here in Durham, North Carolina. We are a very small team dedicated to providing you the most accurate photos possible, through our obsessive focus - individually photographing nearly everything that comes through the door. Questions about what you see? Want more information, photos, or just a friendly conversation with someone that cares and who has actually had their hands on this exact item? Contact us now!

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Neumann USA

"Gone, Baby, Gone"

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What We Think

This is a rare purchasing opportunity to acquire a barely and rarely used pair of Neumann's most serious microphone – and, a matched, consecutive serial number stereo pair to boot!   Those who own them KNOW - this is why they so rarely appear on the open market available for purchasing.   While still produced, as a result of their rightly-priced, but the admittedly lofty price tag, they are entirely special-order from Neumann, making them even rarer.  

The Neumann M150 Microphone represents a dream combination of open, ethereal, and majestic acoustic tonalities.  It is the optimum studio microphone for recording acoustic instruments and voice of any kind, where you want the musician and instruments represented with the magical, larger-than-life “halo” that only a magical tube LDC can provide.  

It provides the transparency and clarity one expects from the finest studio microphones, and the three-dimensional only possibly from Neumann's most advanced tube topology and transformerless circuit design, combined together with a one-of-a-kind acoustic recording capsule.  Representing the best of both worlds, the M150 meets detail with musicality.   It combines a taste of Neumann history surrounding the most heralded orchestral microphone from the Neumann historical timeline, the M50, with the most modern large diaphragm tube design.  Low noise, sensational dynamic range match for technical specs that rival this microphones musical excellence. 

This particular set of Neumann M150s has been a part of Sound Pure's private stock (purchased new in 2007 when originally released) and only brought out for very special recordings.  They have been used only a dozen times. They are in wonderful condition, and used to create the HD piano video – the video was created two years ago, and because we are so very protective of these microphones, they have been used only one time since then.  Brand New KT-8 Cables (which can be the only weak link) to ensure many, many years of flawless use were replaced because the cables (not the microphones) were occasionally borrowed from the box when a cable failed on another Neumann tube microphone that used the same cabling. 

Manufacturer's Description from Neumann

Since the 1950s, the Neumann M 50 has been heralded as the ideal microphone for orchestral recording and string scoring. With its phenomenal transient response and unique directional characteristic, this classic mic has endeared many fans, both in the control room and on the soundstage. 

The new M 150 Tube* takes many of the features from the original M 50 and incorporates them in a very modern microphone. With low self noise, a Titanium membrane and capsule, transformerless tube amplifier and sophisticated power supply, the M 150 Tube is not a reissue but an entirely new microphone in its own right.

Acoustical features

The Titanium diaphragm of the pressure capsule is 12 mm in diameter and is exceedingly thin. Although Titanium has been known to have unique and desirable characteristics for some time, it has, until very recently, been very difficult to procure in the quality necessary for use in a microphone of this type. 

The headgrille is shaped just like that on the original M 50, as requested by various top engineers in the recording industry. Due to mounting the pressure capsule with the diaphragm flush to the surface of a small (40 mm) sphere, the directional characteristic of the M 150 Tube is entirely unique. 

At the lowest frequencies, this system is a pure omnipressure transducer with a perfectly circular polar pattern. However, in the mid- and upper frequencies, the pickup pattern becomes narrower. The M 150 Tube is an ideal microphone for any stereo, 5.1 or 7.1 surround recording, particularly DECCA Tree technique.

Electrical features

The dynamic range of the M 150 Tube is 119 dB, allowing reproduction of the full musical expression, without restraint. 

With a low self noise of 15 dB-A, more gain can be used without risk of adding noise to the final product. The transformerless output circuit of this microphone allows for extremely fine reproduction of small signals and low frequency information. Also, long cable runs can be used with no loss of signal quality.

*The design of the microphone is a registered design of the Georg Neumann GmbH in certain countries.


All Titanium capsule

Unparalleled transient accuracy

Pressure omni capsule for extended low frequency response

Modern version of the world-famous M 50

Transformerless tube amplifier based on the award-winning M 149 Tube microphone

Ideal for DECCA tree recording and surround miking techniques

Very low self noise of 15 dB-A

Stereo sets with consecutive serial numbers


Neumann USA

About Manufacturer

Specializing in some of the finest microphones in the world, Neumann has develpoed a top name in the industry for consistency, reliability, and sonic excellence. With microphones suited for the entire range of studio recording (and more recently live application), Neumann microphones are often a first choice for uncompromised acoustic reproduction.


Acoustical operating principle

Pressure transducer

Directional pattern


Frequency range

20 Hz ... 20 kHz

Sensitivity at 1 kHz into 1 kohm

20 mV/Pa

Rated impedance

50 ohms

Rated load impedance

1 kohms

Equivalent noise level, CCIR1)

28 dB

Equivalent noise level, A-weighted1)

15 dB-A

Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL)

66 dB

Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL)

79 dB

Typical SPL (tube characteristic)2)

K < 0,5 %: 114 dB, K < 5 %: 134 dB

Maximum output voltage

8 dBu

Dynamic range of the microphone amplifier (A-weighted)

K < 0,5 % *: 99 dB, K < 5 %: 119 dB


Power supply N 149 A

Matching connector microphone


Matching connector power supply



800 g


78 mm


165 mm

1) according to IEC 60268-1; CCIR-weighting according to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
2) measured as equivalent el. input signal