Integra DTA 70.4 9 Channel Amplifier
150 W/Ch at 8 Ω, 20 Hz–20 kHz, 0.05%, 2 Channels Driven, FTC
THX Ultra2 Certified
WRAT (Wide Range Amplifier Technology)
HICC (High Instantaneous-Current Capability)
Push-Pull Amplification Design with Three-Stage Inverted Darlington
Circuitry to Remove Distortion
All Discrete Output Stage Circuitry
Massive Toroidal Transformer
Two Large, Customized, 22,000 μF Capacitors for Effective Power
Audio-Tuned Reference Capacitors for Each Channel
Large, Custom-Designed Power Transistors to Drive High Currents
Low-Impedance, Copper Bus Plates for Perfect Ground Potential
High-Current, Low-Impedance Circuit Boards with Thick Copper Foil
Flat, High-Rigidity, Anti-Resonant Chassis
Gold-Plated XLR Inputs
Machined Solid Brass RCA Inputs
Gold-Plated, Color-Coded, Banana Plug-Compatible, Transparent
Multi-Zone Capability (up to Zone 3)*
12 V Trigger Input
Auto Power Down Function
Aluminum Front Panel
HICC (High Instantaneous-Current Capability)—Experience audio with greater dynamics
When an amplifier outputs an audio signal, the connected speakers accumulate energy, reflex, and send energy back to the amplifier. The amplifier must then immediately cancel the
speakers’ reflex energy and instantaneously send out the next signal. The same high current
required to achieve this is also necessary to handle speaker impedance fluctuations, which can force an amplifier to provide four to six times its usual current load. The DTA-70.1’s
instantaneous current capability ensures that audio output is not affected by power limitations.
In order to handle high levels of instantaneous current, the DTA-70.1 incorporates
several key design features.
(1) Push-Pull Amplification Design with Three-Stage Inverted Darlington Circuitry
Found only in high-end amplifiers, this ultra-sensitive circuitry reduces distortion by
maintaining voltage stability and enhancing transient response.
(2) Improved Board Design
The DTA-70.1 features an improved board design with short signal pathways to reduce
electromagnetic interference. The board is also designed to optimize power delivery to
the speaker drivers.
(3) Symmetrical Layout
The amplifier design also incorporates a symmetrical alignment of power devices for
each channel. With channels built to be identical in terms of electrical, structural,
heat-generating, weight, and electromagnetic characteristics, errors in stereophonic
playback are minimized.
All-Analog Circuitry Unaffected by Digital Noise
A standard integrated A/V receiver has the dual task of both processing and amplifying
audio signals, and is therefore susceptible to noise interference from digital circuitry. As
a dedicated power amp with all-analog circuitry, the DTA-70.1 suffers no such
interference. When partnered with a high-quality pre-pro, the DTA-70.1 offers all the
benefits of pure analog amplification: a warm, musical, and full-bodied sound.
THX® Ultra2™ Certified
When a home theater component receives THX certification, it is your guarantee that it will
accurately present movies the way they were mixed by the filmmaker in the studio.
In the case of THX Ultra2 certification—the ultimate benchmark for home audio
performance a power amplifier must offer high-quality, high-output performance for multi-channel playback in large rooms.
Among the strict criteria that THX uses for judging the quality of a power amplifier are measurements of continuous power output, distortion levels, and heat generation.