Nady SPA-850 Rackmount Stereo Power Amplifier (350W/Channel @ 4 Ohms)

The Nady SPA-850 is a professional power amplifier that offers reliable performance and terrific versatility in a compact rackmount design. The amplifier can operate in stereo, parallel, or bridged mono modes to meet the demands of a variety of applications. It offers XLR and 1/4" TRS inputs along with Neutrik Speakon and binding post outputs, allowing you to connect to a wide variety of sound devices and systems. Parallel output connectors let you daisy-chain multiple amplifiers for additional power. In order to deliver the best sound and reliability possible, the amplifier is equipped with a ground-lift switch and a 30Hz low-cut filter to eliminate low frequency hum. A defeatable clip limiter prevents audio from distorting. A complete array of protection circuitry includes a soft-start turn on, noise-free on/off, DC offset, DC and thermal overload protection, DC servo operation, short circuit and speaker protection, and a current limiter. All of these functions protect your amplifier and your speakers from damage and keep them operating smoothly. A variable-speed cooling fan with back-to-front airflow keeps internal components from overheating. FEATURES: Durable steel chassis fits in a standard equipment rack Switchable stereo, parallel, and bridged mono modes meet the demands of a variety of applications XLR and 1/4" TRS inputs, along with Neutrik Speakon and binding post outputs allow you to connect to a wide variety of sound devices and systems Parallel output connectors let you daisy-chain multiple amplifiers for additional power Detented volume controls let you make precise adjustments A ground-lift switch and a 30Hz low-cut filter eliminate low frequency hum A defeatable clip limiter is provided to minimize distortion Clip and signal LED indicators on each channel Protection circuitry includes a soft-start turn on, noise-free on/off, DC offset, DC and thermal overload protection, DC servo operation, short circuit and speaker protection, and a current limiter. All of these functions protect your amplifier and your speakers from damage and keep them operating smoothly A variable-speed cooling fan with back-to-front airflow keeps internal components from overheating Switchable 115/230VAC power for international use SPECIFICATIONS: Power Rating: 425W @ 2 Ohms 350W/Channel @ 4 Ohms Stereo 200W/Channel @ 8 Ohms Stereo 600W @ 8 Ohms Bridged 850W @ 4 Ohms Bridged Input Sensitivity: 1.15V (+3.4dBu) Input Impedance: 10 kOhms, Balanced and Unbalanced Gain: 30dB Frequency Response: 25Hz - 25kHz +0/-1dB Signal-to-Noise Ratio: 100dB Total Harmonic Distortion (THD): < 0.03% Input Connectors: 2 x XLR Inputs 2 x 1/4" TRS Inputs 1 x AC Power Input Output Connectors: 2 x Neutrik Speakon Outputs 2 x Binding Post Outputs (2 Terminals Each) Controls Front Panel: 1 x Power Switch 2 x Detented Volume Control Knobs Controls Rear Panel: 1 x Mode Selector Switch 1 x Ground-Lift Switch 1 x Voltage Selector Switch 1 x Clip Limiter Switch 1 x LF Filter Switch Indicators: 1 x Green Power LED 2 x Green Signal LEDs 2 x Red Clip LEDs Cooling: Variable-Speed Fan, Back-to-Front Airflow Protection: Full Short Circuit, Open Circuit, Thermal, Ultrasonic, and RF Protection; Stable into Reactive or Mismatched Loads; On/Off Muting; Current Limiter (Crowbar) Power Requirements: 110-120VAC or 220-240VAC, 50/60Hz 11A Fuse Dimensions: 19 x 15.7 x 3.5" (483 x 400 x 89mm) Weight: 29.9 lbs (13.6kg)