Audioquest Dragonfly USB DAC

Audio Norge er stolte av å kunne presentere Audioquest Dragonfly USB DAC!

Denne lille og rimelige vidundermaskinen gjør enhver PC eller Mac om til en høykvalitets musikkavspiller. Dragonfly blir sammenlignet med langt dyrere DAC'er.


Audioquest Dragonfly kan i korte trekk beskrives slik:

- USB-DAC på størrelse med en minnepinne (USB-stick)
- Utviklet i tett samarbeid med DAC-guru Gordon Rankin
- Asynkron USB-overføring av signalet ("streamlength")
- Bygd rundt en ESS Sabre DAC-chip
- Spiller alt fra MP3 til 24bit/192Khz
- High-rez opp til 24bit/96Khz spilles av i "native form" (inkl. 88,2Khz)
- kan kobles til en forsterkers linjeinngang
- Innebygd hodetelefonforsterker, passer utmerket til både høyimpedante og lavimpedante hodetelefoner
- 64-trinns analog volumregulering, som ikke degraderer lyden slik digitale volumkontroller er kjent for å gjøre
- PC'ens interne lydkort, som normalt er av dårlig kvalitet, blir omgått ("bypassed"). Dette resulterer i bedre lyd.



Produsentens hjemmeside: USB Digital-Audio Converter

For test: AudioQuest Dragonfly Review : Affordable, Outstanding, Tiny DAC / Amp

Flere tester vil komme etterhvert.



Audioquest Dragonfly koster kr. 1.990,-



Mvh
Sture
Audio Norge
sture@audionorge.no
tlf. 9244 9800

Torggata 16 vis-a-vis Big Dipper
0181 Oslo

 

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Mere informasjon

Mere informasjon:

• Head-Fi.org
  • Produktside
  • Currawongs testomtale
  • "HRT HeadStreamer vs. Audioquest Dragonfly vs. Audioengine D1 comparison video"
    • YouTube
  • "Anyone try the Audioquest DragonFly DAC/Amp yet?"
• Computer Audiophile:
  • "AudioQuest DragonFly 24/96 Asynchronous USB DAC / Headphone Amp"
    • Med kommentarer skrevet av konstruktøren/opphavsmannen Gordon Rankin
  • dalethorn: "AudioQuest DragonFly DAC-plus-Headphone-Amp Review"
• Amazon.com Customer Reviews
• Crutchfield
• CNET: Steve Guttenberg: "A tiny USB digital-to-analog converter from AudioQuest"
• Computer Audio Asylum:
  • "Audiquest DragonFly USB DAC"
  • "More Comments on the Audioquest DragonFly"
• Steve Hoffman Music Forums: "Audioquest DragonFly DAC and headphones amp"
• AudioStream: "Coming Soon: AudioQuest DragonFly USB DAC"

Crutchfield

Highlights:

• 24-bit/96kHz ESS Sabre™ digital-to-analog conversion chip
• tiny "USB flash drive" type design plugs directly into a computer's USB port
• powered by USB connection — no need for external power supply
• asynchronous USB Class 1 data transfer using Streamlength™ protocol for reduced timing jitter and better sound
• 3.5mm stereo minijack provides:
  • headphone output (minimum 12 ohm headphone impedance recommended)
  • variable line-level output for driving powered speakers or power amp
  • fixed line-level output for connecting preamp or receiver
• 64-position analog volume control (digitally controlled using your computer)
• incoming sample rate LED indicator for 44.1kHz, 48kHz, 88.2kHz, and 96kHz sampling rates
• dual master clocks used to minimize jitter
• direct-coupled audio circuitry from DAC chip through analog output driver and volume control for cleaner sound
• durable metal construction with rubberized coating
• output voltage: 2 Vrms
• drawstring storage pouch included
• no cables included
• 3/4"W x 7/16"H x 2-7/8"D
• warranty: 1 year

Fysiske mål fra Crutchfield omregnet av Google:

• B: 1,91 cm
• H: 1,11 cm
• D/L: 7,30 cm

Stereophile

Computer Audio Asylum

RE: What about long cable runs with the DragonFly?, posted on July 2, 2012 at 15:57:04

It has a very low output impedance should not have any problems driving a run of 15'. Its output is on a 3.5mm stereo jack so you will need an adapter.

Our review of the AudioQuest Dragonfly will be featured in the October issue of Stereophile.

John Atkinson
Editor, Stereophile

TONEAudio Magazine

06-13-2012, 03:01 PM #4

It's pretty awesome! We're almost done with our review as well..
__________________
Publisher, TONEAudio Magazine
TONEAudio MAGAZINE | The e-journal of analog and digital sound
Contributor, The Robb Report
Contributor, Fidelity

 

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Utgangsimpedanse m.m.

Computer Audio Asylum

RE: What about long cable runs with the DragonFly?, posted on July 2, 2012 at 15:57:04

It has a very low output impedance should not have any problems driving a run of 15'. Its output is on a 3.5mm stereo jack so you will need an adapter.
[...]
John Atkinson
Editor, Stereophile

post #148 of 149 7/13/12 at 9:14pm

• Chefano
• 124 Posts. Joined 11/2004

Quote:Originally Posted by Chefano

According to my measurements: 4.77Ohms at 1KHz Sine 0dfs

Load Used: 49.9Ohms
Unloaded: 2.084 Vrms
Loaded: 1.902 Vrms
Measured using my Fluke TrueRMS MM.

I have measured again, using a sine from Adobe Audition, and the values changed a little Bit
Actually the output impedance is 4.6 Ohms

Load Used: 49.9Ohms
Unloaded: 2.098 Vrms
Loaded: 1.921 Vrms
Measured using my Fluke TrueRMS MM.

06-22-2012, 08:32 AM #151

Originally Posted by TimDH

I was wondering if Gordon or anyone could tell us the output impedance for this DAC- important for low impedance IEM headphones.

Tim,

It should work fine with IEM's low impedance, the spec sheet says 12ohms minimum load, but I think that is to keep their specs true. Most of the IEM's are greater than that anyways.
[...]
J. Gordon Rankin
Wavelength Audio

..

 

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Interessant informasjon fra konstruktøren/designeren

Krysspost med en del interessant informasjon skrevet av konstruktøren/designeren J. Gordon Rankin fra Wavelength Audio:

Apropos utviklingskostnader og -tid (som også ofte er penger) samt en god del annet vi nylig har diskutert:

Stort utdrag fra et innlegg konstruktøren/designeren J. Gordon Rankin fra Wavelength Audio skrev i tråden "AudioQuest DragonFly 24/96 Asynchronous USB DAC / Headphone Amp" på Computer Audiophile om utviklingen av Audioquest DragonFly som er en meget liten asynkron USB-DAK + hodetelefonforsterker med samme størrelse som en USB-minnepinne. Han er innom og belyser flere av momentene vi nylig har diskutert.

Legg merke til at det koster ca. $ 10.000 å lage hvert forslagseksemplar/hver prototype.

06-20-2012, 03:26 PM #131

[...]

Development on this was done over about 8 to 10 months. Kind of a funny story... I said lets do this and AQ wanted a dac with minimum phase filters. So we made a couple of dacs with the Wolfson 8741 and cap coupled and direct coupled and differential and single ended and if you don't know this every example costs about $10K to do. So we made up five different samples and they all were evaluated by the team and we were getting closer. I said look let me make what I originally suggested and I will pay for it if you don't like it. Well that is what is shipping! There are 107 components on a 0.6"x1.7" four layer board including a ton of regulators and expensive custom capacitors.

3.5mm Do understand that at AudioQuest it's all about the metal. Both the USB connector and the 3.5mm connector are custom one off pieces made with high audio grade silver contacts. If we would have put RCA connectors on these it would have been on wire and what kind of an upgrade path would that have had? nothing!!!!! If we would have put RCA connectors on the unit then it would have been bigger you have to put them at least 0.75" apart and nothing would have fit the model AudioQeust wanted.

I did a ton of work on the output stage to make it compatible with both line and headphone. I think it works really well with both as it has more drive than required for line and easily 2x more drive for headphones.

Flavors...

Look there are a lot of flavors of dacs out there. Everyone seems to be an expert but none of you have listened to all of them so really keep your mouth or fingers off the keyboard. None of us listen the same way or for the same purpose. It's like guitars... you don't hear musicians calling foul on guitars they just don't buy them. Audiophiles should be more like that and really go out an listen before you purchase or make comments.

Thanks
Gordon

J. Gordon Rankin
Wavelength Audio
[...]

 

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Jeg har opprettet tråden "AudioQuest DragonFly" i kategorien "Hodetelefoner"

Jeg har opprettet tråden "AudioQuest DragonFly" i kategorien "Hodetelefoner".

Det er naturlig at vi skriver om dette produktet der istedenfor i denne tråden under "Pressemeldinger".

 

[Lateralus]

Test av Dragonfly i AudioStream, Stereophile's søstermagasin: AudioQuest DragonFly USB DAC | AudioStream

Sitat: "A case in point—if you're looking for a DAC to light up your desktop's powered speakers and are currently feeding them from your computer's analog output, the DragonFly has the goods to fly circles around your current sound and make you positively dizzy with musical delight."