the t.bone RM 700 Review: Key features and technologies

Alistair Vance
Written by Alistair Vance

April 19, 2026

the t.bone RM 700

the t.bone RM 700 Review: Key features and technologies

the t.bone microphone specifications

  • Sensitivity: 2mV/Pa (-55dB)
  • Characteristic: Figure 8
  • Nominal impedance: 600 Ohm
  • Max. SPL: 148 dB 1% THD
  • Frequency range: 20 – 10000 Hz
  • S/N ratio: 70 dB
  • Equivalent noise level: 18 dB (A-weight)
  • Weight: 794 g
  • Dimensions: 76 x 165 mm
  • Incl. Shock mount, wooden case and aluminium case

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the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

the t.bone RM 700 Review: Key features and technologies

Additional Information

Customer Review Summary

The t.bone RM 700 is an intriguing ribbon microphone that offers a unique sound profile at an accessible price point. Constructed primarily from metal, it feels robust and comes complete with a sturdy shock mount, a wooden carry case, and a padded aluminium flight case, which adds to its appeal for transport.

With a figure of eight pickup pattern, the RM 700 captures sound from both sides, making placement critical, especially in rooms with notable acoustics. The microphone tends to produce a warm, mellow tone with a pronounced low-mid range, which can be particularly effective when used alongside other mics, such as the SM57, for guitar cabs. It excels in adding richness and depth to recordings, especially in electric guitar applications.

However, it does exhibit some limitations. The low output level necessitates a good preamp to capture its full potential, as it can be prone to noise if not properly amplified. The frequency response rolls off significantly after 7 kHz, which may not suit every application, particularly for those seeking brighter, more detailed sounds. Yet, for vintage or softer tonal qualities, it performs admirably, especially on acoustic guitars, brass instruments, and certain percussion.

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While the RM 700 is not without its flaws, such as a somewhat fragile shock mount and sensitivity to wind blasts, its ability to deliver a pleasing and rounded sound makes it a worthy addition to any recording setup. Whether for studio use or as a unique tool for specific sound aesthetics, it offers a compelling option for those looking to experiment with ribbon microphones without breaking the bank.

In conclusion, the t.bone RM 700 is an excellent choice for musicians and recording engineers alike, providing a distinct sonic character that can enhance a variety of instruments and recording scenarios.



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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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