Monoprice 2-Channel 300-watt amplifier - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 11 Old 07-30-2014, 08:20 AM - Thread Starter
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Monoprice 2-Channel 300-watt amplifier

http://www.monoprice.com/Product?c_i...seq=1&format=2

No reviews yet, so I think this is a new product. Has anyone seen/heard this amp? Seems like a good price, consistent with Monoprice's other offerings generally. Description from Monoprice website:

"2 Channel Amplifier - 300 Watts - NO LOGO

Get large amounts of incredibly clean power for a stereo speaker zone in a multi-zone home audio system using this 2-Channel, 300-Watt amplifier from Monoprice!
This stereo amplifier puts out 150-watts per channel into 8-ohms with only 0.2% Total Harmonic Distortion plus Noise (THD+N)! When bridged into mono mode, it can deliver up to 470-watts into an 8-ohm load, with the same 0.2% THD+N, making it well suited for high power applications. It also boasts a -103dB signal-to-noise (S/N) ratio at the full rated power into a 4-ohm load. It also features > 65db crosstalk at the rated power into an 8-ohm load.
The amplifier has two stereo inputs with automatic switching, both of which support either line or speaker level input. The secondary input is intended for normal use with the primary input off. Then, whenever the primary input is active, it will override the secondary input. Additionally, it features a line level secondary output, which passes the secondary signal on to another amplifier or line level device.
The amplifier supports a 12 volt DC trigger for turning the amplifier on/off and a 12 volt DC trigger output to control other devices, such as a projection screen or curtains.
The volume control on the front panel is a volume attenuator more than a direct volume control. When setting up the amplifier, you set the maximum volume level using controls on the back panel, then you use the front panel attenuator to control how much of the preset volume is used"
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post #2 of 11 Old 07-30-2014, 08:30 AM
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Class D or A/B? what's the dynamic range? Specs on their site are incomplete.

Speakers: Pioneer/TAD S-1EX, S-7EX, Ascend HTM200
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post #3 of 11 Old 07-30-2014, 11:43 AM
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Quote:
Originally Posted by Sam1000 View Post
Class D or A/B? what's the dynamic range? Specs on their site are incomplete.
It is Class A-B..
My question is what is the power bandwidth
I see frequency response but this is taken @ 1W..

Interesting features but for installer applications it is lacking some things such as an EIA rack adapters....
Also what is the warranty?

Just my $0.03...
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post #4 of 11 Old 07-30-2014, 12:42 PM
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interesting.. price looks good.. maybe a rebadge of a jaycar amp or something

Gear list: Main setup - Kef Q900, Svs sb12-nsd subwoofer, onkyo 609 receiver, epson 8350 projector, elitescreens sable 92" screen, mac mini htpc
bedroom setup: PSB Image B5, Goldmund Mimesis 29 clone amplifier, Schiit wyrd/Geek out 450 dac, Krell ksa-5 clone hp amp, Hifiman he-560 headphones
preordered gear: Light Harmonic Geek Pulse X dac and headphone amp
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post #5 of 11 Old 07-30-2014, 12:53 PM
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Quote:
Originally Posted by uncola View Post
interesting.. price looks good.. maybe a rebadge of a jaycar amp or something
The rear apron looks a lot like an AudioSource AMP300 (or AMP310).
_

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post #6 of 11 Old 07-30-2014, 01:19 PM
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The input sensing was a feature on some Audio Source amps, so SoundChex may be onto something

"But this one goes up to 11"
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post #7 of 11 Old 07-30-2014, 10:25 PM
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comparing pics and specs, this monoprice amp sure seems like a clone of an audio source amp 300, which is a clone of an OSD Audio amp.

I don't need snobs to tell me how to think, thank you!
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post #8 of 11 Old 07-31-2014, 12:35 AM
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At that price I'd get inuke3000dsp. 7 times the power and DSP.
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post #9 of 11 Old 07-31-2014, 08:05 AM - Thread Starter
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Yup, looks like you guys nailed it. AudioSource AMP300. Thanks!
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post #10 of 11 Old 08-18-2015, 07:00 AM
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Sorry for raising this old thread. Has anyone tried this amp from MonoPrice?

I own an old (via craiglist) Russound X225 that looks exactly like it - I've been happy with the Russound, just wondering aside from the exterior (which is exactly identical) if the internals are the same.

As other mentioned, there seems to be a lot of iterations of this amp under different brands.

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post #11 of 11 Old Today, 09:43 AM
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I purchased this to power my front L+R in an 11.2 setup and it has worked out well. For the last 4 months I had been using the Denon 4520CI to power L+R and left this disconnected since moving to this the rest of my channels picked up and the front L+R compete well with the Denon's internal amp's.

For ~$250 that I paid when I bought it I couldn't be more pleased.

P.S. I had to wire my AVR pre-outs to secondary line input and use the +12VDC trigger to turn the unit on/off. Also for some reason my front LED is red when on and orange when in standby, it is supposed to be blue when on but i've never caught it change.
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