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"The Elektra Theatron was another piece of equipment I had heard a lot about on the forums. While the Yamaha 3800 powers the Neuphonix and Epicentrix quite well, a dedicated power amp really makes them sing. The Elektra is a high-performance 7-channel power amp, which weighs in at just under 30kg. It has an 1800-Watt power supply, which gives each channel plenty of power, even when all channels are being driven. If you want a reasonably priced upgrade to your current system then a power amp can really make your system shine.

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(Credit: Michael Cox)

The Yamaha RX-V3800 acts as a pre-amp in this system by decoding and switching between the different sources.

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(Credit: Michael Cox)

The SVS PC-Ultra Subwoofer is a cylinder-based sub, which houses a downward-firing 13-inch driver and 750-Watt BASH amp. It is quite a different shape, measuring 16 inches in diameter and standing almost 4 feet tall. It keeps the unit lighter and it's much easier to move while still having near-identical output to its 'boxed brother'.

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(Credit: Michael Cox)"

Source : Google Reader