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Shure KSM353 Ribbon Microphone


The Shure KSM353 is a Premier Bi-directional Ribbon Microphone with Roswellite™ Ribbon Technology.
List Price: $3,369.00
Sale Price: $2,695.00

When you need pristine audio in both studio and concert hall applications, you need the Shure KSM353 bi-directional ribbon microphone. This hand assembled (in the U.S.) microphone is made with state-of-the-art transducers, transformers and metals. It's the proprietary Roswellite technology used in the manufacturing process that provides revolutionary ribbon resilience and durability under extreme conditions.

It's this Roswellite technology and ribbon material, with it's high-tensile strength and shape memory, that replaces traditional foil ribbons and gives the KSM353 superior resilience at extreme SPLs.

Shure KSM353 Features Include:

  • Bi-Directional polar pattern delivers premier, completely symmetrical audio with superior off-axis rejection
  • Revolutionary Roswellite proprietary ribbon material replaces traditional foil ribbons with high tensile strength, toughness, and shape memory that provides superior resilience at extreme SPLs
  • Custom ribbon motor assembly tailors bass response without attenuating the overall output for full low and mid ranges, and superior upper range presence from a rising frequency response
  • Double-shielded matched full-sized transformer minimizes signal loss and maximizes output while reducing magnetic and RF interference from 90 degree placement, offset relative to the ribbon
  • 146dB SPL across 30 - 15,000 Hz frequency response ideal for capturing fast transients in vocals, acoustic instruments and concert halls
  • Legendary Shure quality and superior construction from hand-assembly of machined steel, silver, gold and aluminum materials and housed in pure stainless steel casing
  • Spring-loaded suspension shock mount for flexible, fully-isolated stand mounting
  • Upright protective wood case included for storage when not in use

Shure KSM353 Ribbon Microphone User Guide (PDF)

Transducer Type

  • Roswellite™ Ribbon

Frequency Response

  • 30Hz to 15,000Hz

Directional Polar Pattern

  • Bidirectional

Output Impedance

  • Transformer, balanced, actual 270 Ohms


  • Positive pressure on front side of ribbon produces positive voltage on pin 2 relative to pin 3,pin 1 ground

Sensitivity (at 1 kHz, open circuit voltage)

  • -53.5 dBV/Pa (2.11 mV/Pa)

Dimensions & Weight

  • Diameter: 4.83 cm (1.9 in)
  • Height: 15.75 cm (6.2 in)
  • Weight: 633g (1.4 lbs)
  • Weight: 833g (1.84 lbs) w/shock mount


  • 146 dB


  • Three pin professional audio (XLR) male


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