jdiggz wrote:

Hello my name is Justin and Im a newbie here. Just picked up a technics sa-ax720 and heard there is a way to mod this to add a loudness feature and make it a two channel powerhouse. I heard that it can be done fairly easily with whats already inside the unit. I cant find any further information on it though. If anyone could help it would be much appreciated, thanks.

That is a very basic unit with pretty limited capabilities. The claimed power of 105 watts per channel is a bad joke; 60 or 70 is more realistic, for two channel operation, and maybe 30 watts per channel for 5 channel operation.

It is never going to be a "powerhouse" or anything like it, because the power supply is too small. You can't get something from nothing. The total rated power supply CONSUMPTION is only 290 watts, and only about half of that can be used for audio power output.

Depending on the speakers you are going to drive, it may or may not be adequate, but there is no useful way to modify it to become something it was not engineered to be.

If it does not deliver the performance you want, you should look at a better stereo amplifier or receiver; that will be much more sensible.

The Harman-Kardon 3700 receiver is a very good one that you might want to consider. It has a lot more REAL power.

Don't use them. They suck anyway. If you are handy you might even disconnect them completely so there is not quiescent load on the power supply for unused channels.

This goes for most old entry level HT amps, the exception maybe being Denon, Onkyo, or old Mitsubishi (MFG by Onkyo). Newer Onkyo amps moved away from discrete amplifiers for the rear channels. I don't even know if you still get discrete amplification out of the front channels from entry level amps from any of these companies on new units. Don't listen to the detractors. I'm sure used with sensitive speakers, front channels only, it's a just fine little amp.