NOS Audio NOS251 Modeling Tube Microphone

How do you emulate a classic microphone? You start with a classic microphone.

The NOS251 starts off as a re-creation of one of the most sought after large diaphragm tube microphones of all time: the venerable ELA M 251E. Its sound is airy and present while at the same time full-bodied and smooth, characteristics that make it especially desirable for recording vocals or any instruments you want to sound larger than life. These characteristics also make it an excellent base for emulating other classic tube microphones, such as the C12, ELA M 251E, U47, U67, and C800G.

Microphone Features

Even without the modeling plugin, the NOS251 has unique features that set it apart from other microphones in its class:

Edge terminated, dual-diaphragm brass capsule based on the CK12

Vintage-style, low reflection head basket

Optional: New Old Stock (NOS) microphone grade 6201 vacuum tube

Optional: Cinemag output transformer

Optional: Wet Tantalum Output Capacitor

Styroflex capacitors at crucial positions

Nickel finish

Custom power supply

Aluminum case

Full Specifications

Type: Condenser Pressure Gradient Microphone with 1-Inch Dual Diaphragm & Tube Preamp

Connection: 7 Pin XLR Shielded Microphone Cable

Polar Patterns: Omni, Cardioid & Figure 8 with 6 intermediate stages.

Frequency Response: 20 - 20000 Hz

Sensitivity: 14mv/Pac= -37db (0db = 1v/pa) -10dB

Impedance: <200 Ohms

S/N Ratio: 76dB

Max SPL: (For. 1% THD @ 1000Hz) 125dB

Equivalent Noise: (IEC 268 - 4 - A Weighted) 20dB

Power Requirements: Dedicated Power Supply

Dimensions: 1.8 Inches x 9.5 Inches

Frequency Response

Custom Modifications

Customize your NOS251 with the following options:

Cinemag Output Transformer $50: Increases RF rejection, important if you are in close proximity to large electrical equipment such as industrial AC units.

New Old Stock (NOS) microphone grade 6201 vacuum tube $25: Full and robust sounding.

New Old Stock (NOS) Wet Tantalum Output Capacitor $25: Vintage correct component with a smoother sound. Very limited supply!

Plugin Features

The models

The premise behind the NOS251 microphone and plugin system is that the best way to authentically re-create the sounds of classic large diaphragm tube microphones is to start with a microphone that already has the same basic characteristis. The plugin will not transform the NOS251 into a dynamic, ribbon, or small diaphragm condenser because that's not what it is. Instead, we aimed to emulate as closely as possible five of the greatest microphones of all time:

C12

ELA M 251E

U47

U67

C800G

An exceptional ownership experience

The whole is greater than the sum of its parts

We know there is a pride and a joy that goes along with owning a great microphone. We want you to feel great about your purchase every time you use the NOS251. Finishing touches like the vintage style head basket, nickel finish, and custom metal wind screen and aluminum case ensure that the NOS251 looks as good as it sounds.

Warranty

The NOS251 is covered by a 1 year JRR Shop warranty from your date of purchase. Simply send it back and our in-house tech department will repair or replace it within 2 business days.