Today's highly dynamic multi-channel movie soundtracks demand more than conventional home audio systems can deliver. That's why ADCOM developed it's second generation THX-certified GFA-7500 power amplifier.
To earn THX certification, an amplifier must deliver clean, powerful sound effects, clear dialogue and dramatic musical scores under all room and speaker-load conditions. In fact, Lucas Films THX uses these amplifiers in their own studios for mixing the audio of THX certified home releases. But ADCOM's engineers went further than the stringent requirements of THX and created a home theater power amplifier that meets the demands of the most critical audiophiles as well.
The GFA-7500's five separate mono modules each produce 150 watts into 8 ohms and over 225 watts into 4 ohms from all five channels - with all FIVE channels being driven simultaneously!! This "five-mono-amplifier" design guarantees the sonic integrity of each channel by completely eliminating any inter-channel cross-talk and ensuring full-power with minimal distortion from each individual channel, regardless of speaker impedance or efficiency. Since the theatrical sound mix for multi-channels will often place very different demands on the speakers for each channel, the ability to essentially treat them as "separate" from the amplifier's perspective delivers the maximum impact the film's sound engineers intended.
The GFA-7500 features a heavy-duty, twenty pound toroidal power transformer that delivers 2500 watts through five separate secondary taps. In addition, the 120,000mF total storage capacitance bank easily delivers the large amounts of current demanded by today's power-hungry, low-impedance THX speaker systems. This oversized and generous power supply allows maximum power output over a wide and unrestricted dynamic range needed by the ever-increasing number of digital audio and audio/video recordings. With all this power ADCOM also wanted reliability and good sonics. To that end, a special protection circuit constantly monitors the 7500's operating parameters, yet it's completely outside the signal path so it won't compromise sound quality. Matched output devices for each channel help deliver the superb sound reperoduction expected of an ADCOM.