Pyle PT8000CH 8-Channel Amplifier Review

[PeteL]

I can see this being rebuilt with ICEpower modules or TPA amplifiers for serious home theater duty.

It's been done

AS4800 Icepower Based Class D 8 Channel Amplifier | Apollon Audio Hypex Purifi Premium Amplifiers

apollonaudio.com

 

[Mart68]

looks like pro equipment from the early 1980s. I upvoted it for that.

 

[amirm]

What is the load impedance in this measurement? Why is it not stated? Measurement is done at only one resistance value?

It is 4 ohm and since this is class AB design, it won't change with change to 8 ohm.

 

[sarumbear]

It's been done

AS4800 Icepower Based Class D 8 Channel Amplifier | Apollon Audio Hypex Purifi Premium Amplifiers

apollonaudio.com

At 10x price!

 

[amirm]

@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.

That can be computed from SNR measurements.

 

[lc6]

8x1000 Watts output power...

...out of a mere 1000 Watts of power consumption

Does this thing have a built-in power generator?

 

[amirm]

These days Texas Instruments (and others) spec their Class-D chip amplifiers noise output in A-weighted microvolts at idle. Which seems reasonable as it more closely corresponds to audible noise/hiss and discounts less audible AC-line noise (hum) at low levels.

An A-weighting input filter for the Audio Precision shouldn't be difficult to obtain/fabricate for this measurement.

As for this Pyle amplifier, I've already banished a few old boat anchors to the shed -- don't need another one.

AP has built-in weighting factors including a-weighting.

 

[Steve Dallas]

Yes, "preamp mode" is an all-or-nothing toggle. Per the Denon product manual:

"0 Set “Assign Mode” to “Preamplifier” if connecting all channels to the Pre-out connectors using an external amplifier. (v p. 218) This stops operation of the internal power amplifier of this unit, reducing interference in the preamplifier created by the power amplifier"

It depends on the model. The 4700 allows you to turn off the front pair or all of them.

 

[voodooless]

Does this thing have a built-in power generator?

 

[LTig]

8x1000 Watts output power...

View attachment 275252

...out of a mere 1000 Watts of power consumption

View attachment 275253

Does this thing have a built-in power generator?

We should buy all of them and enter the power plant business - feed in 1 kW and sell 8 kW, with 7 kW for free ... such a no-brainer ...

 

[sarumbear]

That can be computed from SNR measurements.

Even if the average noise can indeed be computed, can you know if the total noise is predominantly hiss or hum?

 

[amirm]

Even if the average noise can indeed be computed, can you know if the total noise is predominantly hiss or hum?

The dashboard FFT shows that, albeit at 5 watts.

 

[sarumbear]

The dashboard FFT shows that, albeit at 5 watts.

You are correct. I somehow missed the chart in front of me. I apologise.

 

[PeteL]

At 10x price!

OF course but Disco mentioned "Ice Power Modules" and "serious home theater duty". You can't have that for a couple hundred bucks.

 

[Spocko]

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!

All for under $200 my friends - this puts SMSL and Topping to shame.

 

[Spocko]

It's Pyle, so it will be relative noisy and cheap. But for the rest a quiet decent amp it seems. And that is the reputation that Pyle here has, not so high soundquality, but still acceptable, but very solid and reliable.

Here this type of amps are often used in small bars to power their fixed setup for background music, mounted in a rack behind the bar and often fed by a automatic mix system or a radio tuner and feeding wall mount speakers.

For multi-channel home theater, it performs as well as the latest $1,000 AVR

 

[PeteL]

For multi-channel home theater, it performs as well as the latest $1,000 AVR

Sure, but you still need to purchase a processor if you intend to do that.

 

[amirm]

(Brief) teardown posted: https://www.audiosciencereview.com/...8000ch-multichannel-amplifier-teardown.43333/

 

[peniku8]

I like the small footprint and for 8 packed channels is a steal.
Flaw's audibilitty is debateable speccially with some kinds of music,if it doesn't hiss too it's a absolute bargain for HC if someone is into that thing.

Small footprint? It's bigger than most AVRs, which offer 7 or more channels with probably more power than this amp does.
There are 1U units with 8 channels with more power for about twice the (non sale) price. And there is a 2U 8 channel amp with 50x the power for 50x the price.
While the amp is still nice for the money, especially on the sale price, I wouldn't call it "small footprint". It's a 4U unit and that's massive.

 

[sarumbear]

I like the small footprint and for 8 packed channels is a steal.

I wonder what size would you call a large footprint?