
The MP500 is a 2-channel, Multi-Purpose, DSP amplifier with up to 500 watts of power on tap. In 2-channel mode it outputs 125w x 2 @ 8 ohms or 225w x 2 @ 4 ohms and when in bridged mode it can output up to 500w x 1 @ 8 ohms. While MP500 can be used to power nearly any speaker, the selectable onboard DSP presets focus on optimizing all MartinLogan Outdoor products, such as the MartinLogan Outdoor Foundation System, and Custom Installation subwoofers. MartinLogan engineers also went the extra step to make sure that the MP500 could even drive dual subwoofers! The following MartinLogan subwoofers are supported by the MP500’s “Dual Subwoofer” DSP presets to ensure powerful and reliable operation: Dynamo IW-S, Dynamo IW-O (with or without Back Box), Outdoor Living Subwoofer 8. With this and many other features, the MP500 is one of the most versatile custom installation amplifiers on the market!
Q: What is the total power handling of this amplifier?
A: The total power handling is 500 watts.
Q: Does this amplifier have a fan for cooling?
A: Yes, it features a robust, yet quiet, active cooling system.
Q: Can this amplifier be bridged?
A: Yes, this amplifier can be bridged.
Q: What is the minimum frequency response of this amplifier?
A: The minimum frequency response of this amplifier is 20 hertz.
Q: How many channels does this amplifier have?
A: This is a 2.0 channel amplifier.
Q: What type of speaker connection does this amplifier use?
A: This amplifier uses RCA connections for speakers.
A: Hello. Thank you for your question and we hope all is well. Sound can be subjective, so it would be hard to say if you personally like it better than your Onkyo, but it does have more power than the Onkyo and should drive your speakers more efficiently. The MP500 is a power amp and you technically don't need a pre-amp, however, it would typically be paired with one because it doesn't have all the inputs a pre-amp would have and doesn't have a remote. If someone had preouts on their a/v receiver or pre-amp, they could use the MP500 with it. Your Onkyo unfortunately doesn't have preouts so you would need another preamp or a/v receiver to work with it. Note, it can still be used without one, but we just wanted to make sure you were aware of the limitations before considering it. We hope this helps and please let us know if there is anything else we can assist you with. Thanks again for your question and we appreciate your support.
A: Hello and thank you for your question. The amp will be sufficient for the speakers, but it does have some restrictions in other areas depending on your use case. Its purpose is to be a power amp. Note, there is no remote control and the volume knob acts as a limiter. We only want to mention this depending on your use case as it may not be the solution you are looking for. It will have sufficient power for the speakers though. We hope this helps and thank you for your interest and support.

The MP500 is a 2-channel, Multi-Purpose, DSP amplifier with up to 500 watts of power on tap. In 2-channel mode it outputs 125w x 2 @ 8 ohms or 225w x 2 @ 4 ohms and when in bridged mode it can output up to 500w x 1 @ 8 ohms. While MP500 can be used to power nearly any speaker, the selectable onboard DSP presets focus on optimizing all MartinLogan Outdoor products, such as the MartinLogan Outdoor Foundation System, and Custom Installation subwoofers. MartinLogan engineers also went the extra step to make sure that the MP500 could even drive dual subwoofers! The following MartinLogan subwoofers are supported by the MP500’s “Dual Subwoofer” DSP presets to ensure powerful and reliable operation: Dynamo IW-S, Dynamo IW-O (with or without Back Box), Outdoor Living Subwoofer 8. With this and many other features, the MP500 is one of the most versatile custom installation amplifiers on the market!

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| Pros for MartinLogan - 500W 2.0-Ch Multi-Purpose Stereo/Bridgeable DSP Power Amplifier - Black | |||
|---|---|---|---|
| There were no pros for this product— | Sound Quality, Power | There were no pros for this product— | There were no pros for this product— |
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Using this for atmos speakers. No problems, just set it and forget it. No physical manual, have to get it online.
Pete Posted