Xuelin H7 DAC/Amp

Xuelin H7 DAC/Amp

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Product Description
A do-it-all DAC/amp for the mobile listener, the H7 from Xuelin fits an extensive range of high-performing hardware into a sleek form factor. Handling digital-to-analog conversion, two ES9038Q2M chips achieve a wide dynamic range alongside an ultra-low 112-decibel signal-to-noise ratio and 120-decibel THD + N level Read More

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the_fritz
35
Apr 22, 2021
Just to give you some first impressions while the drop is still active: I received my Xuelin H7 DAC/Amp today which I ordered a week ago on release day from China. Not much testing on sound quality done yet. Some infos w.r.t. to the discussed portability: it is not as big and hefty as you might think; see the comparison with other DAC/Amps below (obviously it is not a lightweight dongle either). It works really great and sounds very(!) good with the few headphones I tested it with. It turns on upon USB connection (in low gain mode). With two clicks you are in its party-trick mode: the automatic headphone resistance (impedance) test; that one is quite accurate (e.g. 121 Ohm measured for my HD560s with 120 Ohm officially) and changes the gain setting accordingly. Unfortunately this is also the _only way_ to change the gain (L,M,H) which is not the optimum for not-sensitive planars like my T50rp2 which lands at "mid" gain with its 48 Ohm but would benefit from high gain. The power of this DAC/Amp is however sufficient to drive those demanding planar headphones even from the single-ended port (definitely not to the full potential but still quite ok). Balanced output is much more powerful and I use e.g. the GL2000s (with 70 Ohm=Mid Gain) at -22dB balanced. Volume setting is highly accurate as well with 0.5dB increments. Android and Linux recognize it without problems and Win10 offers up to 384kHz/32bits. It runs a bit warm under load ... and very warm when charged and working as amp simultaneously. The (very small) display is nicer than I expected. Its body is not silver as one might think from the images but entirely black and the glass is definitively a fingerprint magnet. In my opinion it is well worth the price (if you do not need/want bluetooth)...
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EDIT: some more time spent with the H7... Still quite impressed with the power. The output is not exactly clear or very resolving but more on the energetic side. In general, I think it is less for sensitive/delicate IEMs and more aimed at full-sized cans. That does not mean it is unsuited for sensitive IEMs (I can't hear any hiss in my ikko OH10s), it is just a bit bulky and over-powered. The volume scale goes from -127dB (!) to 0 and the OH10s make sound down to very low volumes. Both the OH10 (22 Ohm measured) and e.g. the NightHawk Carbon (27 Ohm measured) fall in the Low gain class but have very different volume levels - i.e. despite the headphone resistance detection you are not protected from very different volume levels when switching the headphones... and you have to invoke the Ohm test/gain switch manually anyway. The HD6xx is measured with 302 Ohm (300 nominally) and very well driven in high gain (at -22dB balanced for comfortable listening levels for me - I actually like this combination a lot). The "Android version" which I bought works with iOS aswell (on my old iPhone SE) if you happen to have the right cable to usb-C from another DAC-dongle or alike. This battery powered DAC/Amp (with separate USB-C port for charging) does not require any power from the host and thus there is no problem with this "accessory" for iOS. Both Android and iOS and the PC-OSs support software-volume from the OS while the DAC/Amp has additionally hardware volume control. There is no playback control (also not passed through the 3.5mm port when using cables with inline controls and 4pin connectors). A bit strange is that you can not(!) switch it off manually while it is USB-connected to any host... it also does not switch off automatically when the USB is disconnected but you can switch it off manually then (and only then). I think it is a bargain also due to its simplicity in usage while being technically quite sophisticated.
(Edited)
the_fritz
35
May 6, 2021
Yes that is normal... which is a pity - could have been done automatically when connecting in headphones (like in some LG phones with "quad DAC").
samfoot89
6
May 6, 2021
Ah okie. I find that there's alot of flaws in the system. Battery won't show full etc. Sampling rate seems fine on pc when I adjust sampling rate, it's only on my phone it seems weird, I remember seeing 47khz on Spotify for kHz. But now it seems to be just at 98khz for Spotify 😅
kajnghdda
1
Apr 18, 2021
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kajnngha
3
Apr 19, 2021
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mista_chell
3
Apr 17, 2021
What is the output power for balanced vs unbalanced? This information is obviously vital and not provided in the details section.
(Edited)
GLRTV
28
Apr 17, 2021
Linsoul has posted the output (power) specs: 262mW@32Ohm (3.5mm SE), 1051mw(2.5mm Balanced ) 112mW@150Ohm (3.5mm SE), 448mw(2.5mm Balanced ) 154mW@300Ohm (3.5mm SE), 598mw(2.5mm Balanced ) https://www.linsoul.com/products/xuelin-h7 That's very powerful (balanced output) for the form factor. It seems to detect the headphone impedance and automatically adjust gain and/or supply rail voltage, which would explain why power at 300Ohm is higher than at 150Ohm. Pretty cool! Could be a very good portable desktop DAC / AMP (office / mobile office, university, library...). I wish it had bluetooth. It's not going to replace a BTR5 for portability tho (too big and no bluetooth).
(Edited)
Rowdy2026
440
Apr 18, 2021
“very good portable desktop DAC / AMP...” that’s an oxymoron.
GLRTV
28
Apr 18, 2021
Mobile desktop if you prefer. Or coffee shop table-top. Or co-working unassigned/non-permanent desk-top. You get the point.
(Edited)
Cferrer1983
63
Apr 17, 2021
I don't understand this product, seems overpriced, does it do anything better than the btr 5, es100 or qudelix?
GLRTV
28
Apr 17, 2021
I has a proper amplification section, but it's not really portable.
HrumHrum
40
Apr 19, 2021
Power delivery is better 262mW@32 Ohm (3.5mm SE), 1051mw(2.5mm Balanced) 112mW@150 Ohm (3.5mm SE), 448mw(2.5mm Balanced) 154mW@300 Ohm (3.5mm SE), 598mw(2.5mm Balanced) So as someone else said here, it is a to-go AMP/DAC vs BTR5 on-the-go So if you go for vacay or to country side cottage and dont want to drag your 2k amp/dac with you, and took some IEMs and cans, that would be the usage scenario. BTR5 is great, but can only do so much with power it can give