Blue Spark SL Large-Diaphragm Condenser Microphone (Discontinued)


94 out of 100. Incorporating 175+ ratings and reviews.

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Blue Spark SL Large-Diaphragm Condenser Microphone

The Blue Spark SL is the successor to the original Blue Spark; prioritizing detail and transparency,

Blue spec'ed the Spark SL with a custom JFET design to ensure the capsule's backplate is evenly charged for best pickup.

Class-A circuitry ensures transparency and low noise.

Rounding out the main specifications are a 100hz filter and a -20dB pad for added versatility.


  • Type: Condenser
  • Polar Pattern: Cardioid
  • Frequency Response: 20Hz-20kHz
  • Impedance:50 ohms
  • Max SPL: 136 dB SPL
  • Applications: Recording vocals, acoustic instruments
  • Power Requirements: +48V


Crisp, clear, transparent, and other similar words best describe the Spark SL according to many users. Many were impressed with how much detail the mic pics up. Acoustic guitar sounds particularly good with a sheen not usually found in other mics at this price. Female voices get treated to the same sparkle without any annoying harshness.


Others felt that in order to maximize the potential of the mic, it needs to be used in a well-treated room as it picks up details you might not want to pick up such as chair squeaks, excess room reverberation and the like.


Want a crisp sounding condenser microphone for your voice or acoustic guitar? The Spark SL delivers in more ways than one with its excellent clarity and detail.

Unfortunately this is no longer available new in stores, however you can see excellent alternatives in our guide to The Best Condenser Microphones.

Blue Spark SL Frequency Response and Polar Pattern Charts:

Blue Spark SL  frequency response chart

About the Author

Raphael PulgarRaphael Pulgar

I've been an audio engineer for 20 years specializing in rock and metal recordings, and also I play guitar and produce original music for my band and other content creators.