Good for you.... Buy  99.9% new with a discount...

MXL Quality control considered this item a "B-Stock" for whatever reason.  Fully inspected it would be really hard to find a flaw. However, in the nature of being B-Stock, do expect a minor cosmetic issue with the unit and/or packaging.

It is packed on a plain box (please see photos)

Thus,  it will have absolutely no impact on the functionality or performance of this microphone. Otherwise, this microphone is brand new and carries a full manufacturers warranty.

Versatile, large-diaphragm, multi-pattern condenser for vocals and instruments that could benefit from a brighter, more open sound.The MXL 4000XL is a multi-pattern condenser microphone with a large 32mm dual diaphragm capsule. The latest incarnation of the MXL 4000, its large-sized capsule brings a bolder, brighter, and more open sound. The 4000XL uses hand-selected internal components to create a sound that enhances both vocal and instrument performances. This microphone includes a shockmount and wooden storage case.

Specially designed MXL 60 shockmount included.Features

• Enhances both vocal and instrument
• Large capsule condensers reveal very subtle sonic details
• Multiple polar patterns: cardioid, figure 8, omni-directional
• Includes a shockmount and wooden storage case

4000XL Multi-Pattern FET Studio Condenser Microphone Specifications:

• Type: Pressure-gradient multi-pattern condenser mic.
• Diaphragm: 6-micron, gold sputtered
• Frequency Response: 20Hz“20kHz
• Polar Pattern: Cardioid/Figure-8/Omni-directional switch-selectable
• Impedance: 200ohm
• Sensitivity: 18mV/Pa
• Pre-Attenuation Switch: 0dB, -10dB
• High Pass Filter: 6dB octave, 150Hz
• Equivalent Noise: 20dB (A-weighted IEC 268-4)
• S/N Ratio: 74dB (Ref. 1Pa A-weighted)
• Max SPL for 0.5% THD: 130dB
• Power Requirement: 48V phantom power (± 4V)
• Current Consumption: < 5.5mA
• Size: 2-1/2 x 10-3/4 (63.5mm x 273mm)
• Weight: 2.15 lb. (975g)
• Metal Finish: Blue/Nickel