Question 1

this item build in switchable power to 220volt for international purpose?

Accepted Answer

This ampl. has a big and heavy transformer , and need wiring change to change from 110V to 220V.

Question 2

can you link 2 amps together?

Accepted Answer

As a rule of thumb, you can't go far wrong, if you use bridged Digital - Class D amplifiers for subwoofers.

For the wider frequency, multi- speaker transducer- element applications, it is generally agreed amongst audiophiles, that the Anolog amplifier, as we have here, is musically best.

Question 3

It says 2 x 500w @ 8 ohms rms, and 2 x 750w @ 4 ohms rms, are these true?

Accepted Answer

Yes, I run four of these amps in my large P.A. system, they have plenty of power to drive my 2 500 wat rms black widow subs

Question 4

Can I hook up 4 speakers to this at once?

Accepted Answer

Why shure!  First, you need to know a little about ohms.  Here is how it works....Almost every amp made outside of comercial communications will handle an 8ohm load per left and right. Most will have heavier capabilities like, 4ohm load or 2 ohm load. The load is the amount of speakers your wiring in to your speaker outputs from the amp. That rule of physics goes like this:two 8 ohm load = 4ohm    2 4ohm load= 2ohm.  Never, Never go below 2ohms unless the amp specifies it can do that, or you will eventually be looking for a new amp and possibly new speaks too!  Now if you want to hook up more speakers you have to know about wiring. Parallel is a term used means direct hot to hot ground to ground per speakerload  "series" is how you can wire speakers to increase the ohms, he ohmage to keep the amp safe from overload which often = thermal meltdown!   To wire seies you take the hot from a speaker and cooect it to the ground from another speaker. What you have left is hot wire from one and the ground from the other. Plug thjose into the amp as color code correctground to ground hot to hot n\Now the ohms will go the other way. you apply the same scale as parallel but going up instead of down. example....now 2-8ohm speaker load will be 16. The thing is, you sacrifice power going up in ohms and gain when going down. That is why when you read amp specs on an amp you will almost always hear em talking about power wattage to ohm load. If you are confused  on my crash course the google this stuff and search for amp and speaker wiring diagrams and the visual on this will bring it all into perspective!  Peace be wih...J. Bull www.bullaudio.wix.com/.simplyenter

ASIN	B00PO7BE0O
Brand	GTDaudio
Brand Name	GTDaudio
Customer Reviews	4.1 out of 5 stars 41 Reviews
Item Dimensions	19 x 3.5 x 115 inches
Item Weight	35 Pounds
Item dimensions L x W x H	19 x 3.5 x 115 inches
Manufacturer	GTD Audio inc
Material Type	Metal
Model	T8500
Mounting Type	Surface Mount
Number of Channels	2
Output Power	1E+3 Watts
Package Type Name	Box
Part Number	T8500
UPC	700371825133

GTD Audio 2 Channel 8500 Watts 2U Stereo Professional Power Amplifier AMP T-8500

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