F-Series power amplifiers are designed to live sound reinforcement, touring systems or fixed installation. As toroidal power transformer power amplifiers, they are top standard quality in current market. They are the ideal choice when high headroom and low distortion are needed, especially when reproducing the dynamic range and clarity of today digital recordings.

Key Feature:
* 2/3U high, heavy duty steel chassis
* Modular construction for easy servicing
* Symmetrical layout for even weight distribution
* High efficiency toroidal power transformer
* Oversized, high energy, linear power supply
* 3 steps, Class H Audio topology
* Stereo, parallel or bridged operation
* Twin balanced inputs (Neutrik XLR connectors)
* Dual Speakon and Binding posts outputs
* High quality components used throughout
* Dual, continuously variable speed fans
* Efficient two sides cooling, the efficiency is better than back to front cooling
* Active, signal, protect and critical indicators
* Duraluminium, 8mm thick front-panel
* Unobtrusive carrying handles
* Voltage Gain: 35 or 40 dB

F3500 Power Amplifier
Specification:
8ohms Stereo Power(RMS): 2X1050W
4ohms Stereo Power(RMS): 2X1600W
Frequency Response(+o/-0.3dB,1W/8ohms): 20Hz-20kHz,-3dB@135kHz
Power Bandwidth (rated power at 4ohms 1%THD+N): 20Hz-20kHz, -.1.1dB/+0dB
TourClass Protection: ACL,IGM, AutoRamp, short circuit, DC voltage, turn-on/off transient, current inrush, sub/ultrasonic input
THD+N (1kHz 1W ): -60dB
Voltage Gain (rated power @ 8ohms): X40dB
Input Sensitivity (rated power at 8ohms): 0.8V
Input Impedance (balanced/unbalanced): 20Kohms/10Kohms
S/N Ratio ("A"weighted, full power at 4ohms): 96.5dB
Crosstalk ("A"weighted, full power@4ohms): >-65dB
Class: 3 Step H
Input Connectors (per channel): Female XLR (pin 2+, configurable for pin 3+). TRS (tip+)
Output Connectors (per channel): 5-way binding posts or Speakon connectors (market dependent)
Supply Power: 4158W
Power Supply (factory configured): AC220V/230V,50-60Hz
Cooling: Two side panel variable speed DC fans, better than conventional cooling
Controls: Front panel: 2 attenuators, power switch; Rear panel: signal ground lift & mode switches.
LED Indicators (per channel): Signal, Protect, Active, Critical
Construction: Steel chassis, 16 gauge . Casting Aluminum front panel.
Dimensions (HXWXD): 132X483X480mm (3U)
Net Weight: 33.5kg
Gross Weight: 34.35kg