Hello, sounds like an earth loop. Removing an earth connection on DAC or source might work.   On my Yamamoto I recognized that some RCA plugs do not connect fine. Try some other RCA cable.....   Kind Regards

Yamamoto A-08S      

Quote: Go get a longer runtime on the battery. (Seems to be bad for some camera users, who want to upload their photos to the ipad, too. Maybe it is a bug and will be changed in the next update of the IOS????)

I just read that Apple reduced the power limit for USB devices from 100mA to 20mA in IOS 4.2.1. Several USB hubs, incl. T3hub, seem to be a workaround.   Cheers

iBasso DB1 Boomslang does not work connected directly but does work with T3hub for me.   Cheers

Quote: For me the question is more theoretical. In real I prefer at home the chain - macbook>DAC>......   Never tried an active hub in an audio setup .... size and weight seems not to be an advantage of an active hub (+ power supply).

You need no power. :)

Quote: Might work with factory reset. (?) (But the iPad feels faster with 4.2.1 and Keynote 1.3 seems to have got some new features when using the pad as a presenter.)

My D10 connected directly doesn't work any more BUT my little workaround (might work for ALL portable DACs)   I connected a Dr.Bott T3Hub (I have the old USB1.0 version) between the connection kit and the DAC and now D10 and the Sigtone h1 work...

I updated to 4.2.1. So far I can tell that the HA Info NG Coax USB interface and the PopPulse PCM 1796 DAC works fine.   With the Sigtone / Shek h1 I get the error message - no work - (Maybe I have to load the battery of the Shek completely before connecting because it wants to...

Quote: Hello, why not use some adapters, i.e cinch/RCA to cinch/RCA + some angled adapters? I use something like this to connect an USB/SPIF interface to a DAC. (A little adapter chain: RCA plug - BNC socket, BNC plug - BNC plug, BNC angled, BNC - RCA, I used BNC because I thought...

I can not recognize any imbalance on the Toucan (neither on the D10) in the range from zero to 9 o'clock......

Thanks for the work, John.

For those looking for an USB-SPDIF interface, this one works fine with the iPad and any DAC with coax digital in.   http://www.ha-info.com/english/ngcoax.htm

Quote: Thank you. Marco from m2tech confirmed: hiFace can't operate from the USB of an iPad as there are no drivers for its OS.