AIYIMA A07 TPA3255 Review (Amplifier)

[AdamG]

Just…. wow

I just translated it. I didn’t make it logical or clear. He is new so he gets some wiggle room. Not a lot but some. Also, translations can get context and intent confused and inaccurate. If he continues to post in any language other than English. We won’t be as accommodating. Benifit of the doubt for new members is what everyone said we need to do better.

 

[xschop]

Well with an isolation transformer on the SDA circuit, this amp runs even cooler at very loud levels....
The details coming forth are even better, along with the huge SDA sound stage...

 

[carlmart]

Well with an isolation transformer on the SDA circuit, this amp runs even cooler at very loud levels....
The details coming forth are even better, along with the huge SDA sound stage...

How do you connect this transformer exactly and what are its specs?

 

[Talisman]

Well with an isolation transformer on the SDA circuit, this amp runs even cooler at very loud levels....
The details coming forth are even better, along with the huge SDA sound stage...

 

[xschop]

 

[xschop]

Here's the crossovers I used for the SDA conversion. Immense soundstage improvement...

To expound: this A07 Class D amp is adequate for running Polk SDA's with an isolation transformer as the interconnect cable.

 

[MediumRare]

Here's the crossovers I used for the SDA conversion. Immense soundstage improvement...

To expound: this A07 Class D amp is adequate for running Polk SDA's with an isolation transformer as the interconnect cable.


View attachment 365268

Can you explain what SDA means and briefly what the circuit does electronically and qualitatively?

 

[xschop]

Polk SDA is their method of interaural cross-talk cancellation via a crossover network that sends an inverted signal to either side speaker's "stereo dimensional driver".

Polk Audio SDA Speakers: 1985 Review of SDA-SRS