Speaking only in generalities, many solid state amplifiers do not have a high input impedance. Once again, speaking in generalities, the Shindo Aurieges with an output impedance of 5000 ohms will need careful system matching.
As a rule of thumb, the input impedance should be at least 20x the output impedance of the source component. You can, of course, get a buffer, but that's yet another component which may add its own coloration.
The Leben CS600 versus the Pass INTA30. Given what I know of their house sound I'd say that they're totally different. I think you would be happy with either.
I haven't heard the INTA30, but as I understand, it's based on the X30.5, which I have indeed heard and like very much. Pick one, buy it used, and if you really don't like it, get the Leben later.
For what it's worth, I have an LFD Zero LE MKIV integrated amplifier. It is wonderful. There is one available on Audiogon right now for a great price. I bought mine new and don't regret it.
As a rule of thumb, the input impedance should be at least 20x the output impedance of the source component. You can, of course, get a buffer, but that's yet another component which may add its own coloration.
The Leben CS600 versus the Pass INTA30. Given what I know of their house sound I'd say that they're totally different. I think you would be happy with either.
I haven't heard the INTA30, but as I understand, it's based on the X30.5, which I have indeed heard and like very much. Pick one, buy it used, and if you really don't like it, get the Leben later.
For what it's worth, I have an LFD Zero LE MKIV integrated amplifier. It is wonderful. There is one available on Audiogon right now for a great price. I bought mine new and don't regret it.