DIA-400 High End
Integrated Amplifier/DAC

The Gato Audio DIA-400 Integrated Amplifier with digital inputs is designed and built to a vision of combining technology, power, sonic performance, connectivity, versatility, stunning looks and compact design.

Class-D with smooth
analogue music

The DIA-400 amplifier offers a state of the art Class-D output stage with dedicated and optimized switch mode power supplies. The multiple stage power amplifier is built around proven technology from International Rectifier, optimized with a precision high frequency oscillator and PWM modulator. A pair of precision switching MOS-FET transistors, with super low on-resistance ensures the high frequency switching is done perfectly and with as little loss as possible. The output filters are made from quality PP capacitors and low DCR coils, converting the high power PWM signals back into detailed and smooth analogue music.

More than just an Amp

The built-in D/A converter offers real high end performance, enabled by the use of a dedicated power supply, a balanced-drive Burr-Brown PCM1794 D/A converter, an optimized high bandwidth I/V converter, and an analogue stage with low-Q, low pass filters. All digital inputs are upsampled to 24bit/192kHz. This D/A converter will upgrade any digital source - such as wired or wireless streaming from your computer or CD drive - to a high end level of detail and musical performance.

Versatility and Connectivity

We had our eye on versatility and connectivity when designing this amplifier. The DIA-400 offers not only a wide range of digital and analogue inputs, but also line outputs, a trigger signal for external power amplifiers, and a configurable home theater input. The HT input can turn the amplifier into a fixed level power amplifier for use in a surround setup, without compromising the sonic performance.

Features:

  • 2x 400W@8ohm / 2x 800W@4ohm
  • Class D output stage
  • Built in 24bit/192kHz D/A converter with upsampling
  • Coax and asynchronous USB digital input up to 24bit/192kHz, optical up to 24bit/96kHz
  • Accepts digital streaming directly from Apple iPhone or iPad
  • Two unbalanced and one balanced inputs
  • Nonmagnetic enclosure
  • Direct function; enables use in home theater sytems
  • Designed, developed and build in Copenhagen, Denmark

    • Technical stuff

      • Output power 2x 400 W / 8 Ω - 2x 800 W / 4 Ω
        Frequency response 20 Hz-20 kHz - 0.5 dB, and 2 Hz-70 kHz - 3 dB
        Total Harmonic Distortion < 0,01% at rated power
        Signal to noise ratio > 110 dB
        Line out maximum level 13V balanced, 6,5V unbalanced
        Total Harmonic Distortion < 0,001% pre out
        Input impedance 20 kΩ RCA or 40 kΩ Balanced
        Line output impedance 75 Ω
        Voltage gain 26 dB (+10 db headroom)
        Recommended speaker load 4 -16 Ω


        Connectors

        Balanced analogue inputs 1 pair gold plated XLR Neutrik
        Unbalanced analogue inputs 2 pairs of gold plated RCA Stereo
        Digital inputs 1 pc USB type B, 1 pc Toslink, 1 pc RCA
        Balanced analogue outputs 1 pair gold plated XLR Neutrik
        Unbalanced analogue outputs 1 pair of gold plated RCA Stereo
        Speaker output 2 pairs of gold plated safety banana
        Trigger, 12 V 1 pc mini jack


        Size & Power

        Power Requirements 115 VAC/230 VAC, 50 Hz/60 Hz, 1600W max
        Power consumption stdb/idle/max < 1W/35W/1600W
        Dimensions (WxHxD) 325 x 105 x 420 mm / 12.8 x 4.1 x 16.5"
        Weight 13 kg / 28.7 lb
    • Reviews

      • Gato Audio DIA-400 review

        AudioAficianado.org, online
        October 2013

        Original language: English

        "This rock solid integrated amp is a genuine high-end audio component that delivers impressive, super clean, full spectrum sound." "This sweet integrated amplifier with DAC reminds me of the old adage good things come in small packages. When referring to the Gato Audio DIA-400 this is certainly true."
        Gato Audio DIA-400 review

        6moons.com, online
        September 2013

        Original language: English