iBasso D10. .UPDATES 1st page, with Current Opamp Choices by HiFlight . . . images page 1, 12,... - Page 182

If the input levels are high then the headphone-out's volume level can be too high to use high-gain at max volume when feeding another amp. SO, if you feed the headphone out into an amp, instead of the line out, don't go max volume on the D10 and that should fix it. Or, only use line-out to drive another amp.

Turning down the volume on the headphone-out does fix the issue, thanks (I have been using low gain in any case). I believe I am hearing stronger highs from the headphone out than the line out, which match the FET-A better, but still testing to confirm.

Given the response from wuwhere regarding the different nature of the output from the headphone and line out is there any reason not to use the headphone out to feed another amp?

If it sounds better without adding distortion or taking away detail or messing up the frequency response, then go for it!

For over a year I had to use my Pico DAC/amp to feed my Woo GES stat amp out of the headphone jack, as a DAC/Preamp; and it sounded better that way than with many headphones plugged into the headphone jack.

wow noob city in here

also the lineout doesnt always have output caps and HP out passes through an op-amp I/V stage (with DC offset filtering caps)

Yep, gotta start somewhere. Thanks to all for the advice.

Does this mean that the line out is not impacted when the op-amps are rolled?

The Line-out will also reflect the opamp SQ differences when rolling different opamps, but there will likely still be some very slight differences in sound between the Headphone out and the Line-out.

Line-out is a constant level output, and is not affected by the position of the volume control. All things being equal, the "purest" output would be from Line-out, but typically this is only used when feeding the DAC output to another amp or other downstream device.

I must admit I havent studied the circuit at all (not that its really my forte anyway) and have been using the same opamps for ages now; only did any 'listening' to the op-amps via HP out. hmm I had thought that the L/O would be taken off the dac, with DC caps and no amp stage. interesting. so the BG mod will indeed effect the SQ when using as dac only with Lisa; cool I was expecting only to get benefit from the caps (other than the power rail upgrade) when running as dac/amp. hehe; I wondered why the burn-in was so erratic with D10 LOL. might have had something to do with rolling op-amps in the first few months. I didnt have it burning 24/7, just used it and burned in as I went.

I'm having a problem here.. I've got a D10 here with AD743 OBCA/EL8201 and it's hissing at low gain with my SE530. Anyone know what's going on?

edit. WRONG! my bad, it's a AD744OBCA

Yep So it's definitely the opamp.. Tried the stock buffers, no change. With the upgraded buffers and stock opamp it doesn't hiss, and complete stock D10 also doesn't hiss.

Burn-in changes

Has someone already documented the changes that occur within 300 hours of burning the D10 in? Sorry 150+ pages is WAY to much to look over! What would you guys describe as the changes that gradually occur in a 300 hour period of burn-in with the D10?

I meant yes, as in, it also hisses when there's no source is attached