My venture into the +4dB vs. –10dB arena was just a comment because I could think of no other reason someone might want more than 6 volts on each output of a pre/pro like the 950. My comment was not necessarily a suggestion that you use a gain/impedance/unbalanced-to-balanced matching device.

Out of curiosity, why would you need more than 6 volts per pre/pro output channel if your amp will go to full output with a 1.5-volt input? And what purpose did you have in mind when thinking about trying to combine outputs for even higher voltages? Is it just that you need more gain on signals that are too low from some devices? The maximum output voltage of a pre/pro is not a direct indicator of how much gain it can provide for incoming weak signals. Because your amp can give a full output with a 1.5-volt input, a pre/pro that can boost a signal by a factor of 10,000 up to 6 volts is more useful than a pre/pro that boosts a signal by a factor of just 1,000 but up to 60 volts.

I guess I’m rambling a bit because I’m not sure of the goal. Is it to make sure the 950 will offer you enough gain for your source to properly feed the amp?

If there are questions that can’t adequately be answered here or by email, there is always the Outlaw 30-day, money-back-if-you-don’t-like-it offer. The 950 is hard to beat without spending a lot more.