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Outlaw Model 5000 Five Channel Amplifier Measurements and Analysis

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All measurements were conducted using our Audio Precision APx585 8 Channel HDMI Audio Analyzer following our rigid Amplifier Measurement Test Protocol.  I did some quick spot-checking on the Model 5000 amplifier gain structure to ensure it could be properly driven with a wide assortment of preamps or receivers. My personal criteria for amplifier gain structure is that it should be able to hit full power when driven with 2Vrms which the Outlaw met just fine, clipping at about 1.3Vrms and hit the rated 120 watts/ch at 1Vrms input. I measured 29.7dB gain with an 8 ohm load attached which is what Outlaw specs this amp to be.

Signal to Noise Ratio

The Model 5000 exhibited a commendably good noise floor of around 80-83dB at 1 watt, A-weighted depending on the channel driven and 78dB when unfiltered.

 Model5000-SNR-1-watt-awt.jpg

Outlaw Model 5000 SNR @ 1 watt, A-wt

Frequency Response

The Model 5000 exhibited a -3dB pt of around 64kHz (1 watt) and 57kHz (full rated power) with ±0.1dB channel to channel deviation which is a little wider band than their 54kHz -3dB pt rating. Linearity was maintained well regardless if the amp was driven at 1 watt or full power.

Model5000-Freq-fullPWR.jpg 

Outlaw Model 5000 Frequency Response vs Power
Purple trace: @ 1 watt, Red trace: @ full rated power

Power Output Measurements

The Model 5000 was tested on a dedicated 120V/20A line with no line regulation.

We tested power using three methods all of which were taken at < 0.1% THD + N:

  • Continuous Full Power Bandwidth (CFP-BW) from 20Hz to 20Khz into 8 and 4-ohm loads
  • 1kHz Power Sweep vs. Distortion (1kHz PSweep)—popularized by the print magazines, this is an instantaneous power vs. distortion test at 1kHz. The problem with this test is it often masks slew-related and or frequency response problems some amplifiers exhibit at the frequency extremes, and thus inflates the measured power results. It does provide an instant gratification number for consumers to argue over on the forums, so we are now incorporating this test to please the masses.
  • Dynamic PWR - 1kHz CEA-2006 Burst Method testing. This is a dynamic power measurement adopted from the car industry similar to IHF method, only a bit more difficult for an amplifier and more representative of real musical content.

Keep in mind most review publications don't do continuous power measurements and they usually publish power measurements into clipping at 1% THD + N. Our measurements are very conservative since we use a dedicated 20A line with no Variac to regulate line voltage.  We constantly monitor the line to ensure it never drops more than 2Vrms from nominal, which in our case was 120Vrms. 

For more info on amplifier measurements, see:  The All Channels Driven (ACD) Test

Model5000-Freq-fullPWR-40hm.jpg

Outlaw Model 5000 Continuous Full Power Bandwidth Sweep

The Model 5000 proved to be an overachiever delivering a good deal more than its 120wpc rated power into 8 ohms and 180 watts/ch into 4 ohms. Our continuous sweep tests produced 170 watts/channel for 8 ohms, two channels driven and 230 watts/ch for 4 ohms, two channels driven under 0.1% THD+N.  Even with ALL five channels driven, the Model 5000 was able to muster 135 watts/channel into 8 ohms under 0.1% THD+N.  It’s rare that we find an amplifier to handily outperform its rated specs, especially an amp priced at the level of a mid-fi AV receiver.

Model5000-Psweep5CH-8ohm.jpg

Model5000-Psweep2CH-4ohm.jpg

Outlaw Model 5000 1kHz Power Sweep Test
Top: 8 ohm load, 5CH;  Bottom:  4 ohm load, 2CH

The Outlaw Model 5000 again did better on the all channels driven test than it was rated.  It delivered almost 140 watts/ch with all channels driven into an 8 ohm load at 0.1% THD+N and 263 watts/ch for two channels driven into 4 ohms at 0.1% THD+N.

Model5000-THD-ratio-fullPWR.jpg 

Outlaw Model 5000 THD+ N Distortion at Full Rated Power

Driving the Model 5000 at 120 watts x 5 full bandwidth, all channels driven, I measured THD+N as seen in the sweep above.  You can see distortion rise with frequency as expected but still remaining below 0.05% which is very good. This amp delivers full rated power with all channels driven well below clipping.

 Model5000-CEA2006-5CH-8ohm.jpg

Model5000-CEA2006-2CH-4ohm.jpg

Outlaw Model 5000 Dynamic Power Test (1kHz)
Top: 8 ohm load, 5CH;  Bottom: 4 ohm load, 2CH

The CEA-2006 burst tests simulate musical program material.  The Model 5000 produced commendable results by belting out over 210 watts/ch into 8 ohms, all channels driven at 1% THD+N and almost 400 watts/ch into 4 ohm.  That’s almost 3dB of headroom which is a sign of a nice meaty power supply and explains why this amp sounded more powerful than it was rated.

# of CH Test Type Power Load THD + N
2 CFP-BW 170 watts 8 ohms 0.1%
2 CFP-BW 230 watts 4 ohms 0.1%
5 CFP-BW 135 watts 8 ohms 0.1%
2 1kHz Psweep 179 watts 8 ohms 0.1%
2 1kHz Psweep 191 watts 8 ohms 1%
2 1kHz Psweep 263 watts 4 ohms 0.1%
2 1kHz Psweep 285 watts 4 ohms 1%
5 1kHz Psweep 139 watts 8 ohms 0.1%
5 1kHz Psweep 148 watts 8 ohms 1%
5 Dynamic PWR 212 watts 8 ohms 1%
2 Dynamic PWR 230 watts 8 ohms 1%
2 Dynamic PWR 390 watts 4 ohms 1%
1 Dynamic PWR 400 watts 4 ohms 1%

Outlaw Model 5000 Tabulated Power Test Results

Grounding Analysis and FFT Distortion Tests

I ran FFT distortion plots at 1 watt and full rated power to determine how clean this amplifier really was. My measurements revealed a pesky ground loop between the Model 5000 and my test gear since the Model 5000 uses a two-prong AC connection and my test gear uses a three-prong which is NOT transformer coupled to float the ground. Unfortunately the Model 5000 does NOT have a physical chassis ground so I tied an alligator clip to the chassis vents on the top cover to the ground pin of my APX585.  This resolved the groundloop on all channels except the one closest to the power transformer which was labeled as the “Left” channel.  I requested that Outlaw should look further into this and include a chassis ground on future builds of this amplifier to help their customers resolve system ground loops which usually can be eliminated by connecting the chassis ground of all equipment to a common point which is commonly referred to as a STAR grounding scheme.   In addition, they could have paid a little more attention to board layout to bring the power supply capacitors closer together to minimize trace impedance and thus tightened up the ground connection a bit better.

Update 4/10/19: While you could ground to any chassis screw if needed, Outlaw added a "star" washer to one of the chassis screws after my suggestion. This screw can be found on the underside of the amplifier located near the back.

It’s important to note that when I attached the Model 5000 to my system, I never heard a hum or experienced any grounding issues so although the ungrounded measurements below don’t look flattering, I certainly couldn’t audibly detect any deleterious effects.  The Model 5000 always sounded very quiet whether steady state or at loud listening levels. I do however recommend using the first three amplifier channels from right to left for the main LCR’s and reserving the last two closest to the power transformer as the surround channels for those that have any concerns whatsoever or want the very best measurable performance that can be achieved on this amplifier.

 Model5000-FFT-4CH-1watt.jpg

Model5000-FFT-1CH-1watt.jpg

Model5000-FFT-2CH-1watt.jpg

Outlaw Model 5000 FFT Distortion Analysis @ 1 watt
Top: 5 channels, ungrounded; Middle: 4 channels, grounded, Bottom: Left channel, grounded

Ungrounded things look a bit ugly but once I eliminated the groundloop, the harmonic distortion profile of the Model 5000 looked really good. At 1 watt, the 2nd order harmonic distortion is down 89dB below the fundamental.  The noise floor is down -110dB which again demonstrates this amp is quiet.  This is a very nice measurement profile.  The Left channel grounded showed a bit of residual noise and transformer hum but again, I was unable to audibly detect this when tested in my system.

Model5000-FFT-1CH-ratedPWR.jpg

Outlaw Model 5000 FFT Distortion Analysis at Full Rated Power

At 120 watts, I observed the 2rd harmonic down from the fundamental to be about 88dB below the fundamental or 100*log^-1(-88/20) = .004%. The high frequency harmonics did start to rise appreciably but still remained over 80dB below the fundamental. 

Crosstalk

I ran an All-To-One crosstalk test on the Model 5000 which made all idle channels the disturbing noise source simultaneously while the noise was measured for the test channel under test for each testing scenario. This test was conducted at rated power.

Model5000-Xtalk.jpg

Outlaw Model 5000 All-To-One Crosstalk Tests

The Model 5000 did great here with almost -90dB at 1kHz and -70dB at 10kHz of isolation for the worst channel.  I consider anything less than -40dB @ 10kHz acceptable, so the Model 5000 handily beat that requirement by a considerable margin.

 

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Recent Forum Posts:

DigitalD posts on April 09, 2019 18:05
gene, post: 1079393, member: 4348
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Great video Gene! This video actually convinced me to purchase the Model 7000x since I’d prefer a 7ch amp. I am fairly new to this and I have a question. Can I use the Ground Section behind my Denon X-4400H to connect to the Ground Section behind my Amp? Will this improve/assist any potential ground loops? Thanks for your help.
snakeeyes posts on August 26, 2018 14:07
Very tempting to buy the Outlaw 5000. Does outlaw ever put these on sale? Obviously the price is nice already. Labor Day is coming soon so just curious.
jsc1979 posts on April 17, 2018 11:44
I just picked up an Outlaw 7100, but I’m now wondering if I should have went with this 5000.

Long shot, but does anyone have experience with both? Obviously the 7100 is over 10yrs old. I got it for $375, the B Stock 5000 wouldn’t be too much more.
Glenv6 posts on April 13, 2018 09:25
Not much action on the here….

I'm sold. My 5000 will arrive in a few days. I was interested in the Monoprice 7x, but it's still not available and I don't want to wait. I'll deal with the other two channels using my trusty old Sumo Polaris on the mains for now.

The 5000 measured well in reviews, and reaped high praise for it's sound. I am looking forward to hearing how well it lives up to the great reviews.
mdanderson posts on October 01, 2016 03:31
Ricardo, post: 1125343, member: 78356
I was wondering if anyone can answer this question, would the outlaw 5000 be a good match with the marantz sr5010. Can the Marantz drive the outlaw to its best performance, this will be powering the svs ultra center and ultra bookshelves.

I have Marantz SR5010 was wondering if you ever got the Outlaw 5000 and how it sounds paired with the SR5010. I had the original Outlaw 750 amp a many years ago but I was thinking about getting a separate power amp to go with my SR5010 even though the Marantz sounds very nice on it's own.
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