3e Audio A7 [TPA3255 PFFB Stereo] Finished Amplifier - User Impressions | Owner's Thread

[vbutani]

One is bi polar inputs (1612) the other FET (1656). I have no idea the requirements of this part in this design. But these parts are different.

Also, they sound different, I prefer 1656 in my setup.

 

[PMental]

Sorry we may miss some post sometimes, actually the components of trigger are not populated yet,so it is hard to do that,also making a hole on the back panel won't be so easy.
we do have a solution by remove 1 resistor to increase the sensitivity by 14dB,RCA down to 400uV and XLR down to 800uV,but this also need some skill of diy...

Did we ever get an answer to which resistor this was? I have 3 "old" amps used in an active setup and would really like to do this fix.

 

[shellz]

This is what 3eaudio sent me back in Jan. Auto off sensitivity on A7 monos (first gen) is much improved after this mod. Best wishes.

 

[PMental]

This is what 3eaudio sent me back in Jan. Auto off sensitivity on A7 monos (first gen) is much improved after this mod. Best wishes.

Thanks! So just remove it, not bridge it?

 

[antcollinet]

Thanks! So just remove it, not bridge it?

That is what it says - I would expect bridging it would have the completely opposite effect - or stop it working altogether.

 

[shellz]

Thanks! So just remove it, not bridge it?

I'm not an engineer so I'm not offering any direct advice, but my experience is I removed the resistor indicated and the auto off sensitivity improved (not measured) as in the doc.

 

[vbutani]

Thanks! So just remove it, not bridge it?

Right, I removed it with the help of technical person on my A5, and sensitivity improved for me. No auto off issues anymore during low volume listening.