Its a fair comment about the lack of exact specifications regarding the Teralink PSU.
however I just checked one ad on ebay here:
It quite clearly says 9V 1Amp.
The model is also called a U9VA.
I know that making assumptions is a dangerous thing, but it uses discreet components, and from this, I assume that the VA means Volt Amps.
This says to me that at 5 Volts it can output 1.8 Amps!
There seem to be two main sellers of the power supply on ebay, Vintage audio labs, and A&B systems. Both have different cases. Perhaps some capacitors or diodes are different? You would have to email the respective sellers to find out.
As for the ripple, I agree that specifications would be nice, but just because a specification is mentioned, does not mean that it is true. I doubt that the AudioGD power supply maintains the same ripple irrespective of load. Did you see the Audio GD datasheet of ripple vs load? And was it a constant load such as a resistor, or dynamic load such as a digital circuit?
Ripple is not the only specification that someone would want with a PSU, as output impedance at various frequencies would also be of interest.
However how often do you ever see this mentioned?