Agreed, the Pyle beat out the Sunfire Cinema Grand, Carver 350, and the Carver Crimson 275.....there's a lot of price difference there. "The average AVR will have even lower cost per channel"....also true!Really? From what I have seen, a high-distortion amp never stopped any audiophile. There are plenty of tube lovers out there for instance. And plenty of niche high-end equipment is sold with far less than stellar performance, and yet, people are lyrical about it.
At about $20/channel, this is pretty good value, regardless of the performance. Note that your average AVR will have an even lower cost per channel than this thing. Offset by the additional years of fine-tuning those AVR circuits, it's really amazing how little one needs to spend for a well-performing amp.
How could someone "put up" with 70v? You either need distribution or you don't, and if your speakers don't have the transformers, it will not work. You don't just put up with it, 70V is not for home hifi, well it's not for Hifi period.As long as you can put up with the sometimes commerical connects (70v?) and the fact they dont measure good to our standards.
I think you are missing the most obvious one though... At some point we have to ask ourselves if we are OK with children working under threat for just enough food to not pass out.either Pyle is losing their shirt on this or there has to be some pretty sketchy build/component issues.
Great value for the money, but I'd be too embarrassed to use an amp anywhere that says "8000 Watts" on the unit while only having 800.
It's like driving a Ferrari that only has 50HP.
@amirm would you consider publishing the average noise figure or the noise spectrum? Often on amplifiers like this noise is more of an issue. You may live with above average distortion on say, a surround channel, but you will not be happy if the surround speakers near to your ear, hiss.This is a review and detailed measurements of the Pyle PT8000CH 8-channel or 8-zone distribution power amplifier. It was kindly drop shipped by a member and costs US $269. Member purchased it for just $158 on sale!
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You probably can't tell from the picture but this is a massive box. It weighs over 50 pounds/23 kilograms and is quite deep. Rack mounts are provided and needed for both front and back. A review says the back holes don't align right however. Back panel shows why this amplifier is also tailored for multi-room distribution:
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By selecting "bus mode," a single input is distributed to any number of channels from 1 to 8. In mono or stereo. Trim pots are provided to adjust the gain for each channel although there were kind of too sensitive to set accurately.
The side panels gave me paus until I powered the unit:
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I feared that those fans would make huge amount of noise but to my pleasant surprise, they barely move and are essentially silent. They never sped up or got louder during testing. This is far better solution than my pro amps I test with loud and small fans that are not even temperature sensitive.
Back to the front, the power switch is quite bright (blue) and bleeds into the LED bar graphs. But once the unit is on, the LED bar graphs themselves light up and more or less cover that issue. The power switch feels quite solid.
Pyle as a brand is know for cheap (read junk) so my expectations were not high going into the review. The overall construction though, with dual toroidal transformers in front, portrayed a different picture. Let's see how it measures.
Pyle PT8000CH Measurements
I stayed with stereo measurements for this section selecting the channels 7 and 8 that are next to the AC power input. Warm up allowed the amp to improve a bit:
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Here is our dashboard:
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We have a spray of harmonic distortion that sinks SINAD fairly low:
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We see that the company that it keeps is not too bad! SNR falls inline or perhaps a bit better:
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Multitone is as we would expect from the dashboard:
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Frequency response is good although I wished for a bit more bandwidth as to get a flatter response to 20 kHz:
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Crosstalk though was surprisingly poor:
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Let's see how much power we have into 2 channels:
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Benefit of large power supply comes in when just driving in stereo:
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Here is 8 ohm performance (company spec = 100 watts):
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Finally, here is power vs frequency:
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Here is on/off noise:
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I hooked up the amplifier to an infinity R253 speaker and I could hear a faint pop on power up. Power off seemed silent although the fan noise may have masked that.
Multichannel Amplifier Testing
My analyzer is only stereo but I drove all channels with the same 8 ohm load. Here is the output power in stereo and 8 channels:
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We are meeting spec here which is good (there is some nonsense about 8000 watts peak which we forgive and ignore).
All the testing so far has been resistive. Let's make the load "reactive" by 30 and 60 degrees angle and also sweep down to 2 ohm and see what happens:
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This is quite robust! At both 4 and 8 ohms, the amp doesn't care if the load is reactive or not. At 2 ohm though, it starts to complain, dropping its output voltage by nearly half. Testing at 1 ohm resulted in momentary shutdown.
The build quality of this 8-channel amplifier seems quite substantial. Massive power supply courtesy of dual toroidal transformers powers the 8 channels well, allowing the amplifier to meet spec. Distortion and noise are rather high though and rank well below our average. The amplifier protection and ability to handle complex loads is excellent.
You are paying almost nothing for this amplifier (the case alone could cost you this much!) yet you get way above a broken design. The PT8000CH won't be my main choice for a high-performance 2-channel system but for surround duty and certainly multi-room amplification, it seems fine.
I am going to recommend the Pyle PT8000CH. Not because it has great measured performance as far as noise and distortion. But that it delivers way, way above its cost point.
As always, questions, comments, recommendations, etc. are welcome.
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What is the difference between designed and engineered I wonder? Do they mean designing the case?Gotta love the wording above the "VOLTAGE SELECT" switch:
"DESIGNED IN THE U.S.A."
"ENGINEERED IN JAPAN"
...and, finally: "MADE IN CHINA"
Quite the international effort!
HIGH DISTORTION?????In audiophile circles, the "Pyle" name is considered of appropriate -- as in "pile of ...". The is amp might have its application especially given the price. But the the high distortion means it has no place in a "high fidelity" system. This much distortion, given most of it is high-order harmonics, will mean an audible degradation of sound quality. (So say I; sound difference deniers can just back off.)
I rate this Pyle as 'Poor'.