any news on the output impedance, your price is so tempting , you can of course check it yourself
by using a test disc with 1 kHz test tone.i know that the stereophile test disc had this, you can also use a tuner and get the lovely hiss in between stations, the marchand site also has a testone generator for free
play the test tone and measure the open, unloaded output signal on a good AC Voltmeter, then you should
add a variable resistance (pot) across the output and adjust until the voltage reading is half of the open circuit measurement ( i usually use 10k) then remove the pot and measure its resistance with your meter. the value should be very close to the source impedance
i usually measure every source i have so it helps me with system matching, i dont know why manufactures dont specify this ,the pro industry standard is 600ohms
well now i will have pasta for lunch .