MXL 603SPR Stereo Set Review: Before you buy this mic

Alistair Vance
Written by Alistair Vance

March 19, 2026

MXL 603SPR Stereo Set

MXL 603SPR Stereo Set Review: Before you buy this mic

Details of model MXL 603SPR Stereo Set

  • 2 Pieces MXL 603 S condenser directional microphones
  • 2 Original Elastic brackets (shock mounts)
  • Aluminium case
  • Extremely robust design
  • 20 mm Gold-plated 3 micron thin large diaphragm
  • Enables exceptionally transparent recordings
  • Ideal stereo pair because of hand picked individual microphones
  • Frequency range: 30 Hz – 20 kHz
  • Characteristics: Cardioid
  • Sensitivity: 15 mV/Pa
  • Impedance: 200 Ohm
  • Signal / noise ratio: 77 dB (Ref. 1 Pa A-weighted)
  • Noise level: 17 dB (A weighted IEC 268-4)
  • Maximum sound pressure: 137 dB 0.5% THD
  • Power supply: Phantom power 48V ± 4V
  • Power consumption: approx. 3 mA
  • Dimensions: 22 mm diameter
  • Weight per microphone: 128 g
  • Incl. shock mount, windscreen, case

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MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

MXL 603SPR Stereo Set Review: Before you buy this mic

Additional Information

Customer Review Summary

I recently had the opportunity to test the MXL 603SPR Stereo Set, and I must say, I was pleasantly surprised by its performance across various applications. The microphones exhibit a clear and balanced sound, making them suitable for recording acoustic instruments, drums, and even ambience. Their frequency response is impressively flat, which allows for an accurate representation of the recorded source without introducing significant alterations or coloration to the sound.

In terms of construction, these microphones are lightweight and seem well-built, arriving in a sturdy aluminium case that provides excellent protection during transport. The included accessories, such as shock mounts and windshields, add further value to the package. However, I did notice that the shock mounts can be somewhat stiff, requiring a firm grip to adjust them, which might be a minor inconvenience for some users.

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When used with a quality preamp, the MXL 603s deliver a warm and vibrant sound, particularly excelling in the higher frequencies while maintaining a solid presence in the lower range. They are quite sensitive and have a good gain level, making them effective for various recording scenarios. However, care must be taken to avoid clipping, especially when capturing loud sources like drums.

Despite being budget-friendly, the MXL 603SPR does not compromise on audio quality. They are versatile and can be employed in both studio and live settings. While there have been a few reports of occasional reliability issues, the overall consensus is that these microphones offer an excellent price-to-performance ratio, making them a worthy addition to any recording setup.

In conclusion, if you are searching for a reliable pair of microphones that deliver impressive sound quality without breaking the bank, the MXL 603SPR Stereo Set is highly recommended.



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Alistair Vance

Based in Bristol, Al has spent over a decade mixing local bands before specialising in hybrid studio consulting. He’s obsessed with the price-to-performance ratio, helping musicians achieve a "Radio Ready" sound without the need for a £50,000 Neve console. No fluff, just honest gear reviews to get your tracks sounding professional on a real-world budget.

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