The Integra DTA-70.1 is designed as a companion product to the Integra DHC-80.1 9.2-channel AV processor for theater systems that use the new 'height' or 'stereo-wide' channels for enhanced three-dimensional ambience. The amplifier is also a highly versatile companion to seven-channel preamps such as the Integra DHC-40.1 with the extra channels dedicated to additional zones or for bi-amplified connections that double the power available to the main stereo loudspeakers.
The DTA-70.1 is an all-analog discrete-component power amplifier with a massive power supply and professional-style balance line inputs. Each channel has identical symmetric circuit layouts, configured in a push-pull topology utilizing high-performance three-stage inverted Darlington circuitry and powerful custom-designed output transistors. Like all Integra amplifiers and receivers, it uses the company's WRAT (wide range amplifier technology) with low negative feedback, closed ground-loop circuits, and HICC (high instantaneous-current capability) to achieve an extended frequency range, low noise, and high dynamics.
The large, 11.7-Amp power supply of the DTA-70.1 uses a massive toroidal power transformer with dual 22,000 �F capacitors. This gives the system excellent short-term transient power impact, with an FTC Dynamic Power specification of 180 Watts into 8 ohms, and 400 Watts into 3 ohms. The power bandwidth is 5 Hz to 100 kHz, +/-3dB, and the IHF A-weighted signal to noise ratio is an excellent 110 dB.
The amplifier's chassis has a thick, solid aluminum front panel and employs heavy-duty construction throughout for maximum rigidity and resistance to resonances. All the circuit boards employ thick 70�m copper foil for high current capability and low impedance, and the use of heavy copper bus plates eliminates grounding issues.
There are gold-plated XLR and machined solid brass RCA inputs for each channel. The color-coded speaker outputs use gold-plated banana-plug-compatible transparent binding posts. It has a 12-volt trigger input for remote turn on and off capabilities, and an automatic power-down capability.
The Integra DTA-70.1 power amplifier is now available with a suggested retail price of $1,800.