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SPECIFICATIONS

Note: All measurements apply to amplifiers in stereo mode with 8-ohm loads and an input sensitivity of 26-dB gain, 1-kHz at rated power unless other otherwise specified. Specifications for units supplied outside the U.S.A. may vary slightly at different AC voltages and frequencies.

Output Power (Maximum average power at 1 kHz with less than 0.02% THD):

Stereo Mode with Both Channels Driven:

Studio Reference 1: 800 watts into 8 ohms, 1,190 watts into 4 ohms.
Studio Reference 2: 360 watts into 8 ohms, 565 watts into 4 ohms.

Bridge-Mono Mode:

Studio Reference 1: 2,375 watts into 8 ohms.
Studio Reference 2: 1,145 watts into 8 ohms.

Signal-to-Noise: (A-weighted) At 26 dB gain with 8 ohm load.

Studio Reference 1: Better than 120 dB below rated power.
Studio Reference 2: Better than 117 dB below rated power.

Total Harmonic Distortion (THD): Less than 0.02% at rated power.

Intermodulation Distortion (IMD): (60 Hz and 7 kHz, 4:1):

Studio Reference 1: Less than 0.005% from full bandwidth power to 78 watts rising linearly to 0.025% at 78 milliwatts.
Studio Reference 2: Less than 0.005% from full bandwidth power to 36 watts rising linearly to 0.025% at 36 milliwatts.

Load Impedance: Safe for all types of loads. Rated for 4 to 8 ohms in Stereo, 8 to 16 ohms in Bridge-Mono mode, and 2 to 4 ohms in Parallel-Mono mode.

Input Impedance: Nominally 10 k ohms balanced and 5 k ohms unbalanced.

Controls: Enable, channel 1 and 2 level controls, stereo/mono (Stereo, Bridge-Mono, Parallel-Mono), ground lift switch, input sensitivity switch (0.775 V or 1.4 V for standard 1 kHz power or a 26 dB voltage gain), meter on/off switch, dynamic range/level meter switch, reset switch.

Connectors:

Inputs: Balanced 1/4-in. phone jacks on chassis and female XLR connectors on standard PIP module.
Output: A pair of color-coded dual binding posts for each channel.
PIP: Standard back panel PIP connector.
AC Line: 3-wire male connector with 5 ft. cable.

Dimensions: 19 in. (48.3 cm) standard rack mount width, 7 in. (17.3 cm) height, 16 in. (40.6 cm) depth behind mounting surface and 2.74 in. (7 cm) protrusion in front of mounting surface.

Approximate Weight:

Studio Reference 1: 60 lbs., 11 oz. (27.6 kg)
Studio Reference 2: 56 lbs., 2 oz. (25.5 kg).




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