Grace M902 Headphone Amplifier 2-Channel Grace M902 Alternatives

Grace M902 Headphone Amplifier 2-Channel Grace M902

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Unfortunately the Grace M902 Headphone Amplifier 2-Channel Grace M902 is no longer available. This page is here for reference. Check out the great alternatives on this page, or contact us to speak with one of our sales advisors about similar products.

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Unfortunately the Grace M902 Headphone Amplifier 2-Channel Grace M902 is no longer available. This page is here for reference. Check out the great alternatives on this page, or contact us to speak with one of our sales advisors about similar products.

Need help? Contact our product specialists.

Description

Grace M902 Headphone Amplifier 2-Channel Grace M902

Grace Design has been building audiophile quality products for the recording industry for over a decade. The technology developed for the m902, and all of our products, has evolved through a process of extensive listening, field testing and careful refinement. The m902 amplifier represents a combination of absolutely pristine audio performance, robust mechanical construction and bombproof reliability

Features:

  • Stereo analog inputs - balanced (+4dbu) XLR and unbalanced (-10dbv) RCA.
  • Ultra low distortion 24-bit /192khz DAC accepts stereo digital input sources in AES3, S/PDIF, and TOSLINK (optical) formats with auto sample rate detection and digital de-emphasis filter.
  • USB input provides a convenient way for users to enjoy a reference quality monitoring experience when connected to their computer. This interface supports 16-bit audio at 44.1 Or 48kHz sample rates.
  • s-locktm dual stage PLL (phase lock loop) circuitry for the ultimate in low jitter digital signal stability and sonic integrity.
  • Unbalanced line level outputs (m902) are provided via RCA jacks on the rear panel for connection to stereo monitors.
  • Balanced line level outputs (m902b) are provided via ¼” tip-ring-sleeve (TRS) jacks on the rear panel for connection to stereo monitors.
  • Front panel rotary encoder provides precision level control of both headphone and line output levels. Level adjustments are made in 0.5db steps within a 95db range.
  • 0.05db channel level matching to ensure true stereo balance at any monitoring level.
  • A large, blue 7-segment display is used to show headphone and stereo main output levels.
  • Calibration mode enables left/right balance adjustment for both headphone and mains outputs. There’s also a display dim mode that turns off all LED’s except for the main power switch led.
  • X-feed (crossfeed) simulates the acoustics of a loudspeaker listening environment which can significantly improve imaging while reducing listening fatigue when using headphones. This feature employs carefully designed signal cross-feed, filtering and delay circuits to simulate hrtf (head related transfer functions).
  • High current transimpedance output amplifier design drives 8 ohm loads. The m902 was specifically designed with low impedance headphones in mind.
  • Only the highest quality 0.5% metal film resistors are used throughout and there are no electrolytic capacitors in the signal path. Sealed gold contact relays are used for all signal switching.
  • Infrared remote control for level control, left/right balance, mute and more when using the optional remote control unit.

Specifications:

  • GAIN
    • Normal Mode: +0dB
    • Boost Mode: +10dB
  • FREQUENCY RESPONSE
    • @ 0dBu out +/- .25dB: 22Hz - 120kHz
    • @ 0dBu out +/- .5dB: 12Hz - 260kHz
    • @ 0dBu out +/-3dB: 4Hz - 600kHz
  • MAXIMUM OUTPUT LEVEL
    • @1kHz, 50 Ohm load: +21.4dBu (9.11Vrms)
  • IMPEDANCE
    • INPUT: 53K Ohms balanced
    • INPUT: 53K Ohms unbalanced
    • OUTPUT: 1 Ohm
  • DYNAMIC RANGE
    • @ 0dB gain: 116dB
    • @ -10dB gain: 119dB
  • THD+N
    • +10dBu out, 50 Ohm load, SMPTE 4:1: <0.01%
    • Headphone +10dBu out, 50 Ohm load: <0.008%
    • Line Out +10dBu out: <0.02%
  • ATTENUATOR CHANNEL MATCHING
    • Attenuator switch: <0.05dB
    • Attenuator range: 99.5dB
  • D/A SPECIFICATIONS
    • Input sample rate: 32, 44.1, 48, 88.2, 96, 176.4, 192kHz
  • THD+N
    • 44.1kHz, 24-bit, 1kHz, +20dBu out: <0.002%
  • NOISE FLOOR
    • 0dB gain, 22-22kHz: -94dBu
    • 0dB gain, A-weighted: -97dBu
  • POWER REQUIREMENTS
    • 115VAC: .16A
    • 230VAC: .08A

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