ATI AT3313 13 Channel Amplifier - Pure Balance

13 Channels - 330 Watts/Channel x 3 and 165 Watts/Channel x 10

We have made some changes to the overall design and assembly you have come to associate with ATI. First, we changed the layout of the amplifiers in the chassis. We combine up to four amplifier PCB assemblies onto a single heatsink. Doing this has allowed us to have channel configurations that we have not provided in the past and to make a smaller and significantly lighter chassis for these new amplifier configurations.

The AT3313 Amplifier - rated at 330 WPC x 3 and 165 WPC x 10 - is the newest model of the AT3300 Pure Balanced amplifier series and is part of the next evolution of ATI Class A/B power.

But as we know from our other brands, having four amplifier PCBs on one heatsink generates a lot of heat. So we added a thermally controlled, ultra-quiet 140mm computer fan per each four-amplifier PCB module to assist in keeping the amps cool.

Each fan is independently controlled by a microcontroller on the standby supply PCB. The speed of each fan is set by two temperature sensors on each heatsink and each fan is mounted using silencing antivibration mounts.

Next, we placed the input connectors directly onto the amplifier PCBs, removing a possible weak point in the audio signal path. At this point, we also moved the AC power section, inlets, circuit breakers and standby power supply to the center, creating a symmetrical chassis assembly—providing for better air flow for the fans and heatsinks within the chassis.

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.

There's truly no other amplifier like the AT3313 available anywhere!

Specifications - Subject to change:

Channel Count
13 Channels

Power Output (FTC 20Hz-20kHz into 8Ω)
3 X 330 Watts and 10 x 165 Watts

THD+N (@FTC Power)
<0.1%

Gain (XLR/RCA)
28.2dB

Input Sensitivity
2.01V for 330 Watts, 1.40V for 165 Watts

Frequency Response
20Hz-20kHz ±0.5dB

Signal To Noise Ratio - Reference to Rated Power
330 W - Better Than 125dB, 165 W - Better Than 120dB

Load Impedance
4Ω - 16Ω

Damping Factor
>400

Input Impedance
20kΩ

Output DC Offset
<±5mV

Power - Requirements
120 VAC 60Hz, 240 VAC 50Hz (Factory Configured)

Power - Consumption
2400W / Amplifier Bank

Chassis Dimensions (H,W,D)
8.75in (9.75in including feet) x 17in x 16.5in (17.62in including rear connectors)

Weight
Unit: 99 lbs / 45 kg, shipping: 111 lbs / 50 kg

Made In The U.S.A.

The U.S. has always led the world in power amplifier technology, and still does. All ATI products are manufactured in Southern California in a modern 50,000 square-foot facility to exacting design specifications and rigid quality control. ATI manufactures all toroid transformers and assembles all circuit boards in-house. We use computerized Audio Precision test equipment to test each stand-alone amplifier module (DMC2) as well as the completed unit. This control and scrutiny of every phase of manufacturing guarantees unit-to-unit repeatability and a lifetime of accurate sound reproduction.