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VentureCraft Go-DAP X - First portable DAC/Amp supporting multiple flavours

A Review On: VentureCraft Go-Dap X

VentureCraft Go-Dap X

Rated # 131 in Portable Amps
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Pros: Supports iDevices, Android 4.1+, and PC Audio. Manufacturer configurable

Cons: Non-intuitive user interface. Integrated DAC/Amp, therefore can't mix 'n match. Default base output impedance of 47 ohm

This review is somewhat different from my other reviews as my Go-DAP X was personalised to my requirement. This service is offered by VentureCraft of which many other Go-DAP X owners have taken advantage of. Therefore this review may not necessarily be completely applicable to the base Go-DAP X model.





The Go-DAP X was released last year around early October 2012 & was the somewhat more universal version of the Go-DAP 4.0 which was iPhone 4/4S specific.


Back then, the Go-DAP X was the first portable DAC/Amp that officially supported not only Apple's iDevices but also Samsung Galaxy S3's (and subsequently Note's) iteration of Android. And as such it also supported USB Audio for PCs, & notebooks.





The X actually sports two DACs, AKM AK4353 & PCM2902C Stereo Audio Codec with USB interface. The AKM is used for iDevices whilst the PCM2902C for USB Audio (Android 4.1+ Jelly Bean & PC Audio).




My particular Go-DAP X's amp was customized by VentureCraft. Instead of the base offerings of OPA2134 or Muses8920, both with output impedance of 47 ohm, mine was customed to use the LME39860 OpAmps & headphone impedance out to 10 ohm. This by default also meant my power output per channel jumped from 80mW/ch to 130mW/ch (for iDevices & 150mW/ch for USB Audio).




The Go-DAP X also sports a 2200mAh battery which can be used to charge the iPhone during play mode. It could also be used to charge Android phones (or other USB devices) but would be in battery-mode only during such purposes.


Other Features



There's is also a bass boost option for iDevice transports, and a 3D surround sound simulation.


As with the Go-DAP 4.0, there's an optical out to use the Go-DAP X as a DDC. The optical output seems to lock to 48kHz sampling rate.


Sound Signature


As I use the X primarily with my iPhone, the following applies to the AKM AK4353 DAC. This DAC seems to have proven itself as it has been used by VentureCraft for their past Go-DAP 4.0, the Go-DAP X, as well as their Go-DAP DD. The DAC is able to retrieve quite a decent amount of detail but present it in a subtle form instead of flat "wham-in-your-face" impact (which may grab one's attention at first but then loses the ability to present a depth imaging perception nicely). Soundstage is also quite nicely presented with sufficient width.


The original amp in my X was the base OPA2134. Possibly it wasn't burnt in well enough but it sounded somewhat grainy. The LME49860 OpAmp option was much smoother to my ears and to my preference. Possibly (most likely) due to the 47 ohm to 10 ohm mod, the bass of the LME49860 also extended deeper with a smooth layered rendering. The mids are lush although possibly somewhat less detail than dedicate multi-component DAC/Amp stacks. Meanwhile the trebles are airy but not bright.


I particularly enjoy pairing the X with my FitEar MH335DW which is known to be a warm & bassy IEM. The 10 ohm output impedance actually tapers off the bass but still in a controlled manner. I've tried other amps with a 22 ohm output, or the original X with 47 ohm and the roll off with those setups were too much but with the X it was perfect to my ears.


On the other hand, if a user has a somewhat more neutral ear/headphone and seeks a little more bass, there is a bass boost option which will fill in the bass very nicely and naturally. I'd like to stress that at least to me (who generally doesn't use EQ or bass/treble boost), this bass boost isn't gimmicky to me. It adds subtly without sounding artificial.



As a portable package that can be used with not only iDevices but with Android Jelly Bean (4.1+) and PC Audio, not to mention it can be used as a portable battery for iPhones and other small USB-charged devices, it's hard to fault the Go-DAP X. Naturally the sonics cannot be compared to other dedicated multi-component stacks (which cost a lot more and are larger and less portable), however it's a neat portable integrated DAC/Amp for those who want a step up from audio straight out of the portable phone.



Edit: VentureCraft actually seem to have the Go-DAP X with LME49860 by default now as their base OPA2134 stock seems to be running low. However their LME49860 versions are still at 47 ohm. Therefore one has to explicitly request them to mod OI down to 10 ohm.


Have you had much opportunity to compare it to Fostex HP-P1, Sony PHA-1 or Cypher Labs Algorhythm Solo (-dB) ? Or even DAP's like RWAK100, DX100 ?
Nice review - makes me want one, and I don't even have a need for it whatsoever!

The dedicated devices such as the -dB and RWAK100/DX100 still still provide probably somewhat more detail (especially the DX100's ESS9018). Even the -dB when paired with the Rx Mk3 in balanced. However those devices have other (non-sonic) cons such as batttery life (for the DX100), UI performance, non-Android compatibility or bulk (in the dB's case).

Sadly I sold my HP-P1 18 months ago and I hardly spent 5 mins on the PHA-1 so can't comment about comparing between the two. I think I may bring the X to the shops to compare with the HP-P1 though since both are using AKM DACs (although different models), and both have an OI of 10 ohm, except the HP-P1 uses the OPA2134 OpAmp whilst my X is the LME49860.

Compared straight out of the iPhone or iPad this is quite nice and portable. It's more compact than the HP-P1 and PHA-1 size-wise and definitely less bulk than the CLASes. As I have something like 8000 tracks in my iDevice whereas my DAPs have only 1000+, the X is actually a decent compromise for a travel DAC/Amp with my jukebox iDevice (or MacAir, since it's so flexible to support multiple inputs).
How does it compare to the Vamp Verza?
Sadly I don't have a Vamp Verza to compare this to. Nor have I seen any Vamp Verza in Japan yet.
Thanks AnakChan for the review, nice write up and pic. Pretty interested in it.
i tried both the black and red versions....the red one was only slighty better, both overall were sonically horrible with most if not all of my IEMs...they have a 47ohm output impedence...i couldn't sell them off fast enough...
Oh nooooooooooo,
I really like this but the cons are not allowing me to continue with this........
Nice review!!! I really like the idea of this product, however, seems to be there's still room for futher improvements and refinements.
Nice job! I'd love to know how this stacks up to the Sony PHA-1 also. I'm loving that unit for portable right now - and my AK100/ALO International combo
hi! could i ask a question about this product?
I now own a iBasso DX50 and Ipod classic (lastest version)
any idea on how this amp+ DAC fit with the DX50?
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