Hey, Like the thread title suggests, I'm looking for a portable USB-DAC with a headphone amp and optical digital out. Anybody know any, I really need the optical out. TIA.

Actually, I tested different reconstruction filters on V30 with PCM FLAC. HD600 is so revealing, there's a clear difference between em all. Worst is the typical strong pre/post ringing brickwall filter. Spline type filter with less ringing is better but almost too clear with the 3-4kHz peak in...

It ain't lossy. It's just based on the fact that you know beforehands which kinda antialiasing filter is used in the system, and drops out high frequency data which would anyways be filtered out by the antialiasing filter.

MQA seems like a perfect match to HD600. Upper mids are way less shrilling than with PCM so the 3-4kHz peak doesn't bother. With PCM the peak absolutely has to be equalized out.

I strongly question Oratory1990 measurements. They differ strongly from ones on rtings.com. For what I hear on HD600 I believe rtings.com measurements are more correct. I made a mild EQ based on rtings.com measurements and listening which I feel neutralizes HD600 a lot without adding Harman...

Okay, based on rtings.com measurements I developed a simpler EQ, then optimised it by listening, this is what I got. 1: high shelf 870Hz, -0.5dB, Q=0.71 2: analog bell 5700Hz, 5dB, Q=2.3 3: high shelf 50Hz, -10dB, Q=0.59 Output Level 3dB EDM has kick! Midrange still has life. Much preferred...

I tried the setup with the brand new (without burn in) HD600. Sure, it flattens some bumps in upper mids and smoothes out treble, but IMO simply doesn't give enough low bass for EDM. In regards to anything else, the EQ sucked away life from mids where HD600 shine. Idk if it's the move away from...

I went on to buy one of the Senns. In the shop I was especially satisfied with the mids/highs, in comparison to my old modded Logitech G433s. Bass is obviously lacking, and I felt upper mids ever so tiny bit too present. Highs felt slightly soft TBH. I'm driving them with LG V30 with USB Audio...

Any idea what's causing this issue? I get no sound out of any microphone, be it one inside a headset or the phone's own microphone when i plug in anything to 3.5mm. Hifi status app says the headphones without microphone do have a microphone when that isn't true. Switching the quad DAC off...

Quoting myself... Asked directly from Davy about this and again got so fast a response. Black and white are just related to whatever background album art color in question so any differences in sound would be all placebo :)

Any idea why UAPP shows the MQA logo sometimes as white and sometimes as black while streaming Tidal masters? Seems that systematically, albums with white logo sound strangely disconnected but albums with black logo are awesome, far better than standard PCM stream!

Try lowpass EQ some highs off on UAPP, you will see that it sounds "more rhythmic", especially on bassy tracks. Very basics for me, I've done so much filtering and know what you're talking about. S8 simply has inferior frequency response extension at top. Find an optimal low pass (or damping...

Not sure lol. Doesn't 3 impulse responses and 5 eq options equal to 15 combinations? :thinking:

From the ESS specs page of the V30 DAC chip: http://www.esstech.com/index.php?cID=422 "Eight preset filters with a user-programmable filter for custom sound signature" Does this mean the digital reconstruction filters, that LG has 3 options on? Any way to access these, or even the custom one...

On USB Audio Player Pro, if I don't use bit perfect I clearly hear differences between digital filters of quad DAC. If thou I enable bit perfect the differences disappear. Any idea what the filter type is on bit perfect? I have a feeling which it is but any facts?

Oh man, I just used like 2h to optimize parametric EQ on UAPP for my HPs, there was especially lots of stuff happening between 3kHz-10kHz. Equalizing the critical band 1-10kHz close to flat within +-1dB improved the fidelity, the outing is way more transparent, realistic, lively and instruments...

Too true. I doubt any HPs would get even close to what I got with my DIY highend loudspeakers. The elements and crossover components were top notch, giving very low distortion. The boxes were so dead due to optimized support structure inside, and the crossover filter was optimized for like more...

Hmm... I think I'll try do a blind test on high impedance vs. aux. I need a friend there to first trigger the mode, then put volume to zero so that there's defo no differences in initial output levels. I'll do a set of 15 tries, that should be enough.

Well G433s I think are 32ohms or therearounds, and cable at full volume still activates normal mode. I could check the DC resistance of the cable when I got time. Thou, gotta remember that the HPs are designed to be used with this cable. Sound signature is the best with cable volume maxed IMO.

I lower the volume on cable for just before high impedance is active, then max the line cable volume again so the impedance of the cable is back to zero. I have an app that shows which mode on LG is active.

Anybody else like the high impedance mode more than the aux? I feel like aux sux all life out, sounds like very damped and dry. High impedance in comparison has the great openness in the critical midrange, sounds lively and airy and even has more punch thou not the strong part of the V30. I can...

Two big things I require outta my phone: 1) Have a battery switch made possible with relatively cheap cost 2) Have top notch audio quality If 1) ain't true I'll never ever consider spending more than say 200€ on any phone. Outta ones that have 1) I'll pick the one which has the best audio...

Hmm I might have to agree... I'm using Logitech G433 RN with the phone, trick the high impedance mode and listen at around 44-52 volume setting. Drives the HPs very good. Same impedance as Hifiman but sensitivity is listed at 107dB, way more than 93dB of the planars :frowning2: No idea how much...

Can V30 drive Hifiman HE-400i any good?

Yes, comparison was made with V30, thou only for an hour in the store. DT-990 pro appeared very airy, I liked it very neutral bar the huge peak in upper treble. That made everything sound sibilant. Even on higher quality recordings the treble peak caught all my attention. Thou bass and mids were...