ATI Pure Balance Series are robust, differential design amplifiers incorporating substantial power supplies to ensure maximum power to all channels as listening and cinematic sound demands are placed upon the amplifier. The ATI Pure Balance Series amplifiers have been designed with ATI’s latest approach to our Class AB differential amplifier design. Massive toroidal power transformers supply 450VA to each channel of the AT3300 series amps to provide full power capability to all channels for the greatest sonic experience that your speaker system can deliver. By offering up to 330 watts to all channels, not only are the front main L-C-R speakers performing with power and dynamics, all surround and height channel speakers will be ready for astonishing instantaneous immersive sound effects and realism.
The AT3313 features two massive toroidal transformers, each powering one amplifier bank, two 20-Amp AC Inputs and breakers and softstart circuitry to reduce in-rush current to a minimum.
Finally, we updated the amplifier design of the AT3313 to use our Current Feedback Balanced Amplifier topology: the same fully differential topology used in the AT6000 & AT4000 Signature Series Amplifiers.
SPEC
Remote Trigger: Activated from 3.3VDC to 24 VDC via a heavy-duty relay
Protection Circuits: Optically – coupled with full automatic reset.
Toroid Transformers: 40% more efficient than EI type. Separate bi-filar windings for each channel guaranty lower noise and crosstalk.
Circuit Boards: Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house.
Soft Start Circuitry: Ultra soft turn on reduces in-rush current to a minimum. Multiple units can be turned on without tripping circuit breakers eliminating the need for sequencing.
Power Transistors: High-current, bi-polar and ThermalTrak™ output transistors insure optimized performance in real-time.
Power Supply Capacitance: 32,800 µF (microfarads) per channel.
Power Cord: Single cord (2-4 Channels) Dual cord (5-8 Channels).
FTC Full Bandwidth Power Output@ 8Ω (Watts RMS): 330
FTC Full Bandwidth Power Output@ 4Ω (Watts RMS):425
Input Sensitivity for Full Rated FTC Output Power - 8Ω: 2.01 Volts
Frequency Response:+0,-0.5dB 20Hz - 20kHz
Phase Response: +5 to -15°, 20Hz - 20kHz @ 1W
Signal-to-Noise Ratio (Ref FTC Rated Power, A-Wtd): >125dB
Total Harmonic Distortion + Noise (20Hz - 20kHz): <0.05%
Intermodulation Distortion: <0.03%
Recommended Load Impedance: Safe for all types of loads. Rated for 4Ω to 16Ω
Power Bandwidth FTC: +0,-3 dB 5Hz - 100kHz
Damping Factor: >400
Crosstalk:Adjacent Channels - Better than -80dB from 200Hz - 10kHz
Skipped Channels - Better than -90dB from 200Hz - 10kHz
Bank to Bank Channels - Better than -100dB from 200Hz - 10kHz
Voltage Gain (RCA Inputs): 28.2dB ±0.2dB
Voltage Gain (XLR Inputs): 28.2dB ±0.2dB
Slew Rate: >50V/µS
Input Impedance: 20kΩ
Output DC Offset: Less Than ±5mV
Power Requirements: 117V/120V AC or 230V/240V AC; 50/60 Hz Factory Configured
Power Consumption (Standby): ≤0.5W
Power Consumption (Idle): Two Channel Amplifier Bank: 2400W
Three Channel Amplifier Bank: 70W / 1800W
Four Channel Amplifier Bank: 90W / 2400W
Chassis Dimensions (W x H x D) : 432 x 248 x 448mm
Net Weight: 45kg
