To Almarg, A very worthy suggestion. However, the Sphinx v.1 i was informed by the Rogue Director of Sales has no pre-amp out for a outboarded basic power( seems incredible) HOWEVER, I DECIDED TO CHECK THE MANUAL WHICH SAYS IN BULLET POINTS:
"LINE 3:
Variable outputs( for a subwoofer OR second amplifier)
Fixed outputs ( for a headphone amp or for recording)"
What follow on the same page is instruction for connecting up a "turntable
Connecting headphones
Connecting the Sphinx to a power outlet
Connecting a subwoofer to the Sphinx
However on the same page it does not mention anything aV5ebout connect a SEPARATE POWER AMP
BTW, there is loose insert page titled "Sphinx Quick Setup FAQ"
Bullet point # 6 states: Line 1, 2, 3, are for line level inputs such as a DAC, tuner, CD player, or outboard phono section"
Again, no mention of a outboarded basic power amp.
I considered your suggestion about using a separate power amp to beef up the power output but also provide much better sound quality. I e-mailed Rogue, and spoke to I believe the Sales Manager, NOT Mark O'Brien who is the CEO and head product designer of the company. The gentleman I mentioned e-mailed claimed he checked with technical support, and the claimed there was no pre-amp output. At the time, it was not a top priority, but it seems he was mistaken. Let me know your thought on what I provided from the manual. Tomorrow, I will. call Rogue and get Mark O'Brien on the phone and ask him about whether v.1 has a pre-amp.
Regarding the Ayre V5xe power amp. I think that is a bit steep in price, and wonder if I could possibly buy something as good or equal to this amp for less money. I know Ayre products are high quality and built a tank, because I own an fully upgrade Ayre CX7e mp CD player which is outstanding. Nevertheless, you point is well taken. about "possibly" using the Sphinx v.1 for a pre-amp only From what I read the new version Sphinx v.2 despite its upgrades may lack a pre-amp out. let me your thoughts. I will keep you (and others posted) Cheers.