Qudelix - USB / Bluetooth 5K versterker/DAC met LDAC, aptX Adaptive, aptX HD, AAC (Dual ES9219 - 3,5 mm asymmetrische uitgang; 2,5 mm symmetrische uitgang)

I was on the hunt for a Bluetooth/USB Dongle DAC to use my Sennheiser IE600 at the gym when I stumbled upon the Qudelix 5K. I ordered it, and the moment I plugged it in, I was seriously impressed by the power and sound quality. It has plenty of juice to drive the HD600/660S2 and all my IEMs. I didn’t really use it as a Bluetooth receiver since I need ANC at the gym and honestly, the sound quality over Bluetooth isn't that great. But in wired mode? It’s a blast! I found an awesome application is to use it in my car by connecting it to my iPhone and plugging it into the AUX port. The sound in my car improved 10x! No joke. Just remember to turn off charging mode when you connect it to your iPhone. The battery life in wired mode is fantastic too—after two weeks on a driving trip and tons of listening, the battery only dropped to 70%! Plus, the app has a loads of adjustments and different EQ settings, including curaded EQ settings for a ton of headphones. I really like being able to drop the pre-gain, which helps keep things distortion-free while cranking up the bass in my headphones and car speakers. This device is a gem! I do wish it had a 4.4 mm balanced out instead of a 2.5 mm, but an adapter works fine. It's not quite as good and open sounding as a Mojo 2, but it still sounds amazing and is way more portable and customisable. Such a fantastic product, really blew me away! Just get one!

This must be the BEST portable DACS I ever used,.In the past I used a Shanling Up2 as a bleutooth Dac- amp powering a few different headsets, among them a BeyerDynamic DT 770, sounds good,plenty of volume as well, but I was looking for a even better DAC preferable one I could tune for music with lesser recording quality....this Qudelix does that and more, sound even flat is even warmer than the shanling,more power,better battery, insane ways to adept the sound to YOUR LIKING, comes with a very good app for Android, Linux ,chromebook and iphone, parametric Equalizer, presets for hundreds of headsets, incredibly cheap if you consider all its posibiletys, order one, it wil put a smile on your face

I wish I can give 6 stars for this device. It sounds great, app is on another level. I was trying a fiio btr7 and qudelix 5k for 2 days and I chooses qudelix easy. For me both sounds almost same when qudelix is bit brighter but that's not matter, zero problemo coz this dac has so many options and presets in app. You can change with preset sound so dramatically that's fills like you have 500 different dac's to use! Its not possible to not find pleasing sound in this app. I have maybe 20 different IEM's and all have now new life coz I take them everywhere with me and cable is never in my way! Now I like to say something that I didn't heard about qudelix anywhere. This device is so light so you can hang it using clip on your IEM's cable after you wrap your neck around with cable once. It make perfect Bluetooth set.

I use this DAC to drive my Hifiman Sundara's, with great effect. This little thing really gets the best out of my headphones, especially when using balanced cables for more power. The Qudelix app provides ample opportunities for EQ.

Worths 10 stars!!Specifically writing this review about the awesomeness of this product for powered bookshelf or desktop speakers.I have an Audioengine A2 (first version, without bluetooth). And even though these speakers are capable enough for desktop use, they are adjusted extremely flat by Audioengine. Which is not a bad thing if you have a nice EQ option out there.But If you're also several different devices during the day (like me, 2 macs. One for work one for personal stuff) you may know that none of the software EQ apps have a properly working structure and they all compress the sound too much. If you're a windows user, built-in audio adjustments might be sufficient. However when you connect different devices you need to make those adjustments for all of them too.I've connected the Qudelix 5k to the Audioengine A2 and my computers are getting connected to that through USB (with a single button switch). But since Qudelix 5K also has bluetooth, i'm able to connect my phone (or other bluetooth devices for sure) too.There are 2 very important positive things here:1st -> You don't need to make separate EQ adjustments in your devices which connects to the spearkes. When you adjust the EQ according to your taste through the Qudelix app for the 5K itself, it will be the EQ of the speakers, will remain same for all of the audio sources.2nd -> EQ quality, it is extremely well balanced in Qudelix and whatever setting you do, it will not compress the audio and even improve the quality and more importantly the clarity!And lastly, about a year ago they've added a very clever awesome Chrome extension which you can do the settings without connecting your phone to qudelix and open the app.I can clearly say that this is one of the best audio products i've ever bought! And changed my mind to sell those extremely flat sounding Audioengines.In case someone reads this review by being an Audioengine A2 owner, here's the settings which you can put inside a txt file and upload as an EQ setting:CH: 0TYPE: PEQPreamp: -4.5 dBXfeed: 1 0Filter 1: ON PK Fc 31 Hz Gain 5.0 dB Q 0.500Filter 2: ON PK Fc 44 Hz Gain 2.8 dB Q 0.500Filter 3: ON PK Fc 63 Hz Gain 2.0 dB Q 0.500Filter 4: ON PK Fc 88 Hz Gain 1.5 dB Q 0.500Filter 5: ON PK Fc 125 Hz Gain 1.0 dB Q 0.500Filter 6: ON PK Fc 180 Hz Gain -1.5 dB Q 0.500Filter 7: ON PK Fc 250 Hz Gain -2.0 dB Q 0.500Filter 8: ON PK Fc 355 Hz Gain -2.0 dB Q 0.500Filter 9: ON PK Fc 500 Hz Gain -2.2 dB Q 0.500Filter 10: ON PK Fc 710 Hz Gain -1.0 dB Q 0.500Filter 11: ON PK Fc 1000 Hz Gain -2.0 dB Q 0.500Filter 12: ON PK Fc 1000 Hz Gain -2.0 dB Q 0.500Filter 13: ON PK Fc 2000 Hz Gain -1.0 dB Q 0.500Filter 14: ON PK Fc 3000 Hz Gain 0.0 dB Q 0.500Filter 15: ON PK Fc 4000 Hz Gain 0.5 dB Q 0.500Filter 16: ON PK Fc 6000 Hz Gain 1.0 dB Q 0.500Filter 17: ON PK Fc 8000 Hz Gain 1.7 dB Q 0.500Filter 18: ON PK Fc 11000 Hz Gain 0.2 dB Q 0.500Filter 19: ON PK Fc 16000 Hz Gain 0.6 dB Q 0.500Filter 20: ON PK Fc 22000 Hz Gain 2.0 dB Q 0.150

De Qudelix 5K is niet in staat mijn Edition XS aan te sturen. De Aune AR5000 amper.Een paar goedkope IEM lukt wel.

Again, I tried many, and this is just the best. The sound is fine, nothing special there, but the functionality is awesome. Just perfect. It does everything better than any other out there.

Lo utilizzo quotidianamente con le mie KZ e funziona divinamente. Il dispositivo è leggero e facilmente trasportabile, essendo principalmente in plastica, salvo per la clip in metallo. Lo uso quasi esclusivamente tramite bluetooth quando sono fuori casa. L'autonomia non è eccezionale a mio parere (>4 ore di riproduzione audio via bluetooth utilizzando Sony LDAP) ma non ho altri riferimenti per poter valutare la cosa (e non penso si possa fare molto di più per via delle dimensioni).L'applicazione è ottima sia da smartphone che da browser. Ti consente di monitorare costantemente i parametri e ti avvisa non appena è disponibile un nuovo update firmware (fatto l'ultimo oggi 30/04 e da quando lo ho acquistato è il 5, quindi molto supportato).L'unico aspetto "negativo" sul quale posso esprimermi, è in merito all'usabilità dei bottoni laterali. Non hanno icone e una forma differente perché siano distinguibili al tatto o alla vista, pertanto bisogna fare l'occhio e capire quale è uno o quale è l'altro dal verso del dispositivo (probabilmente acquisterò/stamperò degli sticker e li attaccherò sul dispositivo per risolvere questo aspetto). Il dispositivo inoltre non è configurabile in altro modo se non tramite applicazione.L'ho comprato principalmente per migliorare il mio ascolto e per imparare un po' di più sulla musica che ascolto quotidianamente. Il suo equalizzatore e il suo catalogo di preset (ce ne sono una vastità, ed è possibile inserire anche di custom) mi ha permesso di comprendere meglio come poter adattare la risposta delle cuffie a quelli che sono i miei gusti in fatto di ascolto.Il dispositivo possiede anche un microfono e da quello che mi è parso di capire dalle poche chiamate che ho fatto utilizzando questo, si sente discretamente bene (aggiunta molto gradita per chi ha cuffie prive di microfoni o che utilizza cavi custom per i proprie monitor, come il sottoscritto).Non ho cavi bilanciati con cui provare l'uscita bilanciata di cui il dispositivo è provvisto, quindi la mia valutazione per ora è solo in merito all'uscita sbilanciata. Aggiornerò ma mia recensione qualora dovessi acquistare un cavo/cuffia con cui testare l'uscita e non appena sarò un ascoltatore migliore.Consiglio quindi l'acquisto ai neofiti come me che vogliono esplorare un po' più a fondo il mondo dell'ascolto musicale, e vogliono imparare a capire i loro gusti in termini di ascolto. Il dispositivo è molto semplice da utilizzare, ed i preset già all'interno del dispositivo aiutano molto (funziona anche senza impostare questi). La copertura bluetooth è molto buona ed è possibile utilizzarlo anche connesso alla USB-C (2 cavi un confezione uno USB-C ed uno USB standard). Il costo è alto, ma penso sia un buon punto di partenza che non impone particolari limitazioni in merito di cuffie o dispositivi che ci vuole acquistare qualora si scegliesse di fare un upgrade in futuro.

Apple ist schuld.Seit Apple in Music Lossless Audio freigegeben hat, habe ich mal wieder angefangen etwas genauer hin zu hören.Deshalb habe ich mich in den letzten Wochen mit Kopfhörern und vor allem mit Digital-Analog-Wandlern beschäftigt…..Habe mir inzwischen auch noch ein Probeabo von TIDAL geholt....Meine Anforderung war es einen DAC mit integriertem Kopfhörerverstärker zu haben.Vornehmlich für old school Blues, Rock und Hardrock.Da ich einen DT880 von Beyerdynamic mit 250 Ohm als Hauptkopfhörer betreibe sollte der Verstärker auch etwas Power haben.Abhörsituation: Wohnzimmersessel, nicht für Unterwegs.Bluetooth war mir zunächst nicht wichtig. (Das sollte sich aber noch ändern).Das Gerät sollte sich per Kabel an iPhone und Mac als USB-DAC betreiben lassen.Nach einigem Lesen bin ich auf Apogee Groove, ifi HIP DAC, FiiO BTR5 und eben den Qudelix 5k gestoßen.(Beim Groove hätte ich für den Betrieb am iPhone ein Powerpack benötigt. Da er vom Klang so gut bewertet war habe ich ihn dennoch mit getestet. Im Sessel hätten mich die Kabel auch nicht so gestört.)Ich habe die Geräte nicht messtechnisch verglichen. Da gibt es endlos viel Quellen.Meine Tests beschränkten sich auf viel Vergleichshören.In Kürze: der Groove klang spontan am "wärmsten“.Spontan, weil ich mit der Zeit gemerkt habe, dass es Immer einige Zeit benötigt, bis man die betonten Nuancen der Geräte wirklich erkennt.Denn die Unterschiede sind nicht sehr groß. Und es hängt natürlich sehr viel an der genutzten Abhöre. An einem anderen Kopfhörer ist sicher einiges anders.Gegenüber dem ifi HIP DAC empfand ich jedenfalls, dass es dem Apogee an Details mangelte.Der HIP DAC war nun mein Favorit. Allerdings bemerkte ich mit der Zeit, dass dieser -auch ohne die zuschaltbarem Bassanhebung- immer etwas zu viel Bass am DT990 erzeugte.Dennoch klingt das Teil sehr gut und sieht auch super aus.Der analoge Lautstärkeregler ist super cool.Nur würde mich der Bass nerven.Der BTR5 klang etwas analytischer und unten rum nicht so dick.Also noch ein paar Punkte mehr. Er war nun vom Klang meine Nummer eins.Hinzu kam die super kompakte Bauform und ein wesentlich niedrigerer Preis als die beiden erstgenannten.Die Verarbeitung finde ich auch die Beste der vier Kandidaten.Und er hatte Bluetooth.Das ist aber auch sein schwächster Punkt. Die Reichweite geht gegen Null (im Vergleich zu allen anderen Bluetooth-Geräten die ich so habe). Spätestens nach zwei Metern (ohne Hindernisse) kommt es zu Störungen.(Generell ist Bluetooth für mich -zumindest zum "richtigen" Musikhören nicht von Interesse, da zumindest am iPhone wegen des AAC-Codecs zu viel verloren geht. Habe auch mal mit einem Pixel 5 unter LDAC getestet. Das klingt schon toll. Hier höre ich keinen Unterschied zum Kabel).Und die App fand ich auch nicht so toll.Den EQ bekam ich nur im Bluetooth-Modus zum laufen. Nicht im DAC-Betrieb. Eventuell lag es an mir.Im USB-DAC-Betrieb konnte ich am iPhone die Lautstärke nur am BTR5 regeln, nicht am Gerät.Allerdings habe ich mal wieder meine alten Teufel-In-Ears ausgepackt. Seit dem bleiben die AirPod Pro im Schrank.Der Klangunterschied ist unglaublich.Nun zum Qudelix.Negativ:Es gibt für mich nur einen negativen Punkt. Den vorweg: er unterstützt "nur" 96kHz-Samplingrate.Die anderen Geräte 192 kHz oder gar 384 kHz.Das wundert mich vor allem im Vergleich zum BTR5, denn der Qudelix und der BTR5 haben meines Wissens den gleichen DAC an Bord, einen ESS 9218P.Ich weiß nicht, wie der Qudelix klingen würde, wenn er höhere Raten könnte.Zu dem Thema habe ich viel gelesen. Es gibt wohl mögliche Effekte. Aber wenn überhaupt für meine Ohren hörbar, dann vermutlich nur sehr marginal.Man müsste mal Qudelix fragen, weshalb z.B. der den gleichen DAC-Chip nutzende BTR5 192 kHz kann?Neutral:das Gehäuse wirkt nicht so hochwertig wie das des BTR5. Vor allem scheint die Oberfläche empfindlicher gegen Kratzer zu sein.Aber das ist Jammern auf hohem Niveau.Positiv:Nun aber zu den guten Dingen:Ich würde sagen, dass er vom Klang identisch mit dem BTR5 ist. Somit also parallel mit diesem auf Platz 1.Die iOS-App von Qudelix ist super aufgebaut. Man kann unheimlich viel auslesen und einstellen. Es ist gut strukturiert und verständlich.Sie funktioniert auch wenn der Qudelix mit einem anderen Gerät verbunden ist. Somit kann man auch dann Werte auslesen, wie z.B. welcher Codec aktiv ist, wenn das Gerät am PC hängt oder via Android einen Bluetooth-Stream per LDAC empfängt).Die für mich wichtige Integration in iOS ist super. Denn es kann in beiden Modi (Bluetooth und per USB) die native Lautstärkereglung des iPhone genutzt werden.(Auch am Mac funktioniert das sehr gut).Und: die Bluetooth-Reichweite ist sehr, sehr gut. Ich kann ohne Probleme in einen anderen Raum gehen, ohne dass es zu erkennbaren Störungen käme.So stelle ich mir das vor!Dadurch, dass die App viel besser aufgebaut ist, lässt er sich für mich besser anpassen.Grundsätzlich nutze ich keinen EQ. Aber…wenn man möchte...Der EQ kann neben dem, was man so kennt viel feiner getrimmt werden (Q-Faktor!).Es war ein leichtes den wärmeren Sound des HIP-DAC zu "emulieren“.Über Bluetooth (mit LDAC am Pixel) ist der Klang klasse. Am iPhone mindestens sehr gut (mehr geht halt hier leider nicht auf Grund des erwähnten Codecs). Zusammen mit meinen Teufel-In-Ears ist es aber in jedem Fall auch am iPhone um Längen besser als mit Apple-Ear-Pods oder Air Pods.Nebeneffekt: der Qudelix hat (wie der BTR5) Mikros eingebaut. Er kann auch für Telefonate genutzt werden.Hier muss ich allerdings sagen, dass er auf dem Kopfhörer gegenüber dem BTR5 (oder gegenüber Apple Headsets) etwas nasal klingt.Habe auch keine Anpassungsmöglichkeit dafür gefunden.Mein Gegenüber ist jedoch vom Klang begeistert. Der Qudelix kann integrierte "MEMS"-Mikros nutzen oder per TRRS-Stecker nach TIA Standard verbundene Kopfhörer mit Mikro.Und das Coole ist: auch während ich über USB-DAC Musik höre kann er per Bluetooth einen Anruf entgegen nehmen. Kein „schnell den Kopfhörer runter“, wenn man das denn so möchte.Einige schreiben ja von schlechter Akkuperformance. Das kann ich nicht nachvollziehen. Sollte sich im Laufe der Zeit etwas anderes zeigen würde ich das hier ergänzen.Zusammengefasst: ich bin begeistert vom Qudelix 5k. Er klingt hervorragend, ist durchdacht, super ausgestattet, winzig klein und leicht.Die Entwickler scheinen auch sehr umtriebig zu sein.Eine absolute Empfehlung.Ich habe gesehen, dass Qudelix sogar In-Ear-Kopfhörer mit aktiver Frequenzweiche für das Teil auf den Markt gebracht hat. Der Preis ist ein „no brainer“...Sind bereits bestellt….

Deze bluetooth DAC overtreft mijn verwachtingen: heel detailrijke klank, mooie textuur en timbre. Ik gebruik hem voornamelijk met een Queen Of Audio Vesper IEM en een Sennheiser/Drop HD58X hoofdtelefoon. Voor geen van beiden heb ik EQ nodig met de DAC. Zelfs een 30 jaar oude Sennheiser HD480 II klinkt, met slechts een beetje lift in de lage tonen, beter dan ooit tevoren. Het belangrijkste verkoopsargument van de DAC is de EQ, maar die is voor mij minder belangrijk, de instellingen in de app zijn zeker zo interessant. Er zijn enorm veel mogelijkheden. Een raad voor nieuwe gebruikers: doorloop aandachtig alle instellingen. Zoniet zal je enkele cruciale functies over het hoofd zien, zoals de 2 volumeregelingen in cascade. Uiteraard zijn er beperkingen: een hoog-ohmige hoofdtelefoon zoals de Sennheiser HD250II (300 ohm) is weliswaar nog net aanstuurbaar, maar daarvoor is de DAC niet gemaakt en dan moet hij echt "zwoegen". De bediening is een beetje wennen omdat de knoppen geen labels hebben, maar daar is een oplossing voor: de Qudelix 5K sticker by Sproketz.

Hi.. I'd like give my view on Qudelix 5K after using it for almost 3 months. Hopefully what I share below could help others to understand better about this device.Qudelix 5K is a very sophisticated audio device. I notice it captures firstly/mostly the 'serious' audio lovers/enthusiasts. I myself like it so much and really amazed by its sound quality that I feel it necessary to introduce it to greater audience than just the audio enthusiasts. For this reason, I'm going to try explain it in a more simple than technical approach.In simplest term, device like Qudelix 5K can do two things:1. As Bluetooth receiver (receive BT audio and send out analog audio)2. As USB to analog audio dongle (USB-C to analog audio out)The USB-C port on 5K is dual function port. We could use it to charge the battery on 5K, or use it as interface for USB-to-analog audio dongle, or both.Qudelix 5K send out analog audio via the 3.5mm or 2.5mm jack on top of the unit. On either of this port we could connect earphones/headphones or send the output across to the external audio amplifier (i.e. home audio or car audio).(Note: the 2.5mm port is intended to operate in 'balanced' audio mode. If you have no idea what it is all about, please avoid to use it. Don't try to put in just any 2.5mm plug/cable, without proper 'balanced' wiring. 5K could be damaged by the wrong 2.5mm connector/cable.)Depend on how we like to use 5K, how deep we want to dig 5K capabilities and tinker with their accompanying mobile app, we could turn this device from sounding great to amazing.We could use Qudelix 5K just as simple BT receiver/audio dongle. The device have been pre-set up by manufacturer with optimum default settings. IMHO, the default settings on 5K is more than enough to make average/most listener to be happy with it. Enough to open them up to the world of improved audio reproduction and that while having the freedom of detached (i.e. wireless) earphone/headphone from their mobile phones.Please don't feel degraded/depreciate when I mention 'average'. By 'average' is I mean for people enjoying music more than concerning with how their audio equipment perform (that's why there's the term 'audiophile for this kind of love :) ). I myself is more of a music lover (80% of time) than audiophile, though I really love to hear my music sounding their best.Qudelix provide 5K with an accompanying mobile app (available for iOS on AppStore and Android on PlayStore). The app is intended to do many things such as:- to regularly upgrade the 'software' inside Qudelix 5K; to improve its performance and stability- to formally start the warranty of the 5K with the manufacturer- to adjust behavior when it is connected as USB dongle- to enable/disable certain Bluetooth audio codecs (note: by default all codecs are enabled)- to adjust the buttons behavior/actions- to adjust the power/battery management- to adjust it to get the maximum sound quality (remember: this one is not mandatory to get good sound out of 5K, as I mentioned above)- to set the built-in equalizer in 5K to adjust it to sound more to our flavor (note: human hearing and ear profiles are never the same person to person), or to 'correct' the imperfect characters of earphone/headphone, or compensate the room response of home/car audio system.- and few moreThe interesting part with the app is, the Qudelix app is actually just a user interface to set these settings on 5K. All the settings we do on the app are not saved on the app but directly on 5K and the app is no longer needed for 5K to perform. Settings on 5K will follow it everywhere regardless of the mobile phone or computer using 5K as BT receiver or USB audio dongle. So if in one occasion I used 5K with my friend's mobile phone or I used to test a mobile phone in the store, all the settings (including the sound profile) will just follow with 5K.With such capabilities of Qudelix 5K, the app then is a little bit complex to use. You'll need time to really understand and to use all the features. I myself confused on my first time using it. But don't feel too overwhelmed but the app, if you found it is too complex to understand it, just leave it. Qudelix 5K sounded already good with its all default settings.I don't want to cover all the settings and Qudelix capabilities here. Those could be found on their user guide. I'm going to list the things that I found amazing on Qudelix 5K.1. Amazing Sound.I've repeated this many times above. It simply sound amazing. Be it used with just basic AAC/Apt-X codec, or very advanced codec like LDAC, or using as USB-audio dongle. It sounded many, many times better then my other BT receiver Maceton WM4U. It sounded two or three levels above my LG V20 phone; a phone that is highly respected for the sound quality: better resolution, better music layers, better power, more finesse.2. Long battery life.This depend whether we want to maximize it for longer battery life or set it for best audio performance, we can get between 10 hours to 20 hours of play.3. Powerful Driving PowerDevice like Qudelix 5K is technically referred to as DAC (Digital Analog Converter). DAC will receive audio in digital format and convert it into analog audio. Analog audio is then converted by the interaction of amplifier and transducer (i.e. speaker, headphones, earphones, etc.) to become audio wave so that we human can listen to it. Normally analog audio output from DAC alone is quite low and need external amplifier to sound louder. In Qudelix 5K case, it has built-in little amplifier that is powerful enough to drive various headphones/earphones load. The 3.5mm port is powerful enough to drive many headphones. But the 2.5mm balanced port would deliver double of power. In balanced, it's quite powerful to drive my very demanding Hifiman HE5LE planar magnetic headphone to sound quite loud.4. Amazing Bluetooth range.Qudelix hype about the 5K unique BT antenna design, and they are not just hyping it up. I could get 5K play 8 meters away from my LG V20 phones, across 3 layers of brickwall (of about 6 inch each) at my home and that while I use LDAC as codec, and that streaming from my LG V20 that can only do BT4.2.5. Amazing EqualizerQudelix 5K come with two flavors of 10 bands equalizer; Graphic Equalizer (GEQ) and Parametric Equalizer (PEQ). Equalizer is done on digital domain with 64 bits precision calculation, which mean the EQ could adjust the level of frequency and amplitude of the sound without degrading the quality of the modified sound. GEQ is something that most people familiar with. But PEQ is a beast of equalization tool. It provides a much more flexibility for us to shape the frequency of the sound to affect the response of our earphone/headphone or room response of external audio system. Note that PEQ is usually considered as professional tool. But not necessarily professional audio equipment would have PEQ in it. Some lower/mid end even only have 3 to 5 bands PEQ. Amazingly 5K come with 10 bands very high precision PEQ in such a small package.By now, you should be able to see why I mentioned that Qudelix 5K is such a sophisticated audio device. Inside its understated appearance, Qudelix 5K is really an amazing, highly customizable and state of the art audio device.Below is the list of audio device I used with 5K this far.Earphone: Sony MH755, Blon BL-03, Fiio FH1Headphone: Drop E-MU Purpleheart, Audeze Sine (in balanced), Hifiman HE-5LE (in balanced)Source (BT transmitter): LG V20Music/songs: I don't limit myself with certain genre of music. I listen everything: classical/romantic/baroque/renaissance, rock (progressive, rock'n'roll, hard rock etc.), jazz (all derivatives), metal, pop, folk/country, vocal, etc.PS. Qudelix 5K has built-in microphone, which is very sensitive, but don't have noise cancellation. The voice coming out from the microphone is actually very good, but if we clipped Q5K to clothes it could easily pickup the noise of 5K rubbing the clothes and send across the sound to the other end. If we don't like this, and our earphone has built-in microphone, we can turn the 5K microphone off and instead using the external microphone on our earphone/headphone. In the other way around of usage, if our headphone/earphone don't have microphone (or we send audio output to amplifier for example) we could use the built-in microphone on Q5K for making a call.PPS. Comparing Graphic Equalizer (GEQ) and Parametric (PEQ).In GEQ, frequency range of human hearing (20Hz to 20KHz) are divided into about factor of two frequency scale (31.5, 63, 125, 250, 500, 1K, 2K, 4K, 8K, 16K) with fixed width of frequency range 'impact' for boost or cut as peak/valley. PEQ is a much more sophisticated equalizer in that this frequency scale can be adjusted freely by us, for how wide the impact would be, and whether the impact is affecting as peak/valley or as shelfing filter. Don't be confused and overwhelmed by this PEQ. It seems complicated at first but is really not that difficult to use. What makes it complicated is to effectively use PEQ to shape a headphone for example, we would need to have the frequency response measurement of the headphone. With that we will know on which part of response the phones are the lacking or having too much of volume. Then we rectify these with the PEQ. Luckily some sites readily share their measurements such on this list: PEQ sample I attach as one of picture, show my way to correct the response of my Fiio FH1 IEM. I don't follow any 'Harman' Curve but use other excellent sounding IEM for reference. Without the EQ, it sounded smooth but flat and unexciting. PEQ turn it into a lively sounding IEM I could never imagine before.

Excelente calidad de audio y bueno la ecualización es por la cual muchos lo compran. El hecho que traiga un clip y te lo puedas montar en tu playera interior lo vuelve súper cómodo. Totalmente recomendado.