Originally Posted by Gazza
I'll also use the Pico connected to my CD player and turntable at home.
For the latter is why I ask about the Pico drving the 701s.
In regards to cabling, I have very good cables on my source components and I don't want to lessen the quality of the signal by skimping on the final run, i.e. the headphone's cables.
Well, the Pico's amp section will lessen the quality of the signal more than anything else in your CD or turntable system. It's a fine amp for general amping purposes but it really doesn't compare at all to HeadAmp's Gilmore Lite which doesn't cost that much more. And do your "very good cables" include an RCA-mini interconnect? The Pico has only a mini-plug input.
And whether you use an aftermarket cable or not, the K701 headphone cable will probably wind up terminated to a 1/4" plug, so you'd have to use a 1/4"-mini adapter, which is another piece in the signal chain.
It sounds like you don't need the Pico's DAC or even its size, have you looked into an AE-2 instead? Its battery runs longer, it has RCA input, and its larger size makes it easier to operate.