Just use common sense with the volume control and you will be fine. This amp provides all the clean power I could ever want and provides more definition and slam in the bass than achieved by powering the speakers from the AVR speaker outputs. I use my Monolith amp with Ohm 3000 speakers rated at 45-250 watts at 6 ohms with an efficiency of 88 dB. Here are a few things to consider before you make a purchase. Whether you are upgrading a whole system or only a few components, eBay has a selection of affordable multi-channel amplifiers for you. An amplifier can enhance your cars audio system. There are no adjustments required to the amplifier. A Multi-Channel Amplifier Can Help to Customize Your Cars Sound System. If you are using less efficient speakers for the front mains or centre channel, you will have to adjust your front/centre/rear levels, but this is done via your processor or AVR.

In checking your Dev Tech 9040 speaker specs, it appears they are very efficient, at 92 dB, so I would expect they will be playing pretty loud before you get anywhere near the 150 watt maximum suggested by the manufacturer. You won't have to worry about clipping from this amplifier. However, speaker damage is often caused by having an amplifier with insufficient power, which when driven into clipping, can damage speakers. 3: the power is tested under the condition of 20ms burst 1kHz sin wave and 1 THD. Featuring 4000W, quadruple channels, you can now handle the high power TOA HX-7 at ease. As with any high power amplifier, use common sense when cranking up the volume, because with 200 watts per channel available into 8 ohms, you could exceed the speaker manufacturers maximum power guidelines. The DA-1000F multichannel power amplifier is excellent solution to sound application that requires high power density. Multi-channel power amplifiers for surround systems, or as multi room zone-amplifier for custom multiroom installation in the whole house.

BEST ANSWER: This amplifier puts out a solid 200 watts per channel, all channels driven, into 8 ohms and 300 watts per channel into 4 ohms.

Multi channel power amplifier