A milestone achievement in sound reinforcement, Prethos Advanced Preamplifier Technology employs transparent internal circuitry architecture that enables you to achieve unprecedented audio quality and performance.
- Prethos Advanced Preamplifer Technology: Class-A, discrete, transformerless preamplifier provides transparency, extremely fast transient response and no crossover distortion, as well as minimizes harmonic and intermodulation distortions
- 4dB of self-noise and max SPL of 131dB for a total dynamic range of 127dB—an increase of 7dB for cleanly nuanced audio capture
- Multiple polar patterns—cardioid, omnidirectional and bidirectional—for maximum flexibility in a wide variety of recording applications
- Dual 1″, externally biased, ultrathin, 2.5 m, 24K gold-layered, low-mass diaphragms provide superior frequency response
- Premium electronic components and gold-plated internal and external connectors
- Subsonic filter eliminates rumble from mechanical vibration below 17Hz
- Switchable 15dB pad for handling extremely high sound-pressure levels (SPLs)
- 3-position switchable low-frequency filter helps reduce unwanted stand vibration noise or counteract proximity effect
- Integrated three-stage “pop” protection grille reduces plosives and other breath noise
- Includes ShureLock Suspension Shockmount, ShureLock stand mount, carrying case and velveteen pouch
Self Noise (equivalent SPL, A-weighted, typical)
- Cardioid: 4dB SPL-A
- Omnidirectional: 6dB SPL-A
- Bidirectional: 7.5dB SPL-A
Preamplifier Distortion (at 1kHz, 94dB SPL)
- Cardioid, Omnidirectional, Bidirectional: <0.001%
- Signal-to-Noise Ratio
- Cardioid: 90dB
- Omnidirectional: 88dB
- Bidirectional: 86.5dB
- Clipping Level (20Hz to 20kHz, 1% THD)
- Cardioid, Omnidirectional, Bidirectional: 2,500Hz: load9dBV
- Cardioid, Omnidirectional, Bidirectional: 1,000Hz: load 6dBV
- Dynamic Range (@ 1kHz)–2,500Hz load
- Cardioid: 130dB
- Omnidirectional: 134dB
- Bidirectional: 131dB
- Dynamic Range (@ 1kHz)–1,000Hz load
- Cardioid: 127dB
- Omnidirectional: 131dB
- Bidirectional: 128dB
- Maximum SPL (1kHz at 1% THD)*–2,500Hz load:
PAD OFF:
- Cardioid: 134dB SPL
- Omnidirectional: 140dB SPL
- Bidriectional: 139dB SPL
PAD ON:
- Cardioid: 150dB SPL
- Omnidirectional: 152dB SPL
- Bidriectional: 151dB SPL
- Maximum SPL (1kHz at 1% THD)*–1,000Hz load:
PAD OFF:
- Cardioid: 131dB SPL
- Omnidirectional: 137dB SPL
- Bidriectional: 136dB SPL
PAD ON:
- Cardioid: 147dB SPL
- Omnidirectional: 149dB SPL
- Bidriectional: 148dB SPL
























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