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Best sub100$ amp Xenos 0HA-REP? (with option of opamp rolling?) - Page 2

post #16 of 144
Quote:
Originally Posted by vorlon1
Owning both the stock Xenos and the stock Go-Vibe 5, I find the Go-Vibe superior in every way that I use as a criterion, soundstage, clarity, inner detail, and backround detail as well as overall timbre. The Xenos might have a slightly more fluid midrange, but the Go-vibe has greater clarity and detail which to my ears is more desirable. So, as with all things subjectivity and individual preference is crucial.
With the premise that all my excitement comes from the performance of the modified 0HA-REP (thus, from the potential that this design has inherently)


I wonder what at all you like about the Go-Vibe v5's tonality

Also, I don't find it all that detailed, AT ALL. Especially in the treble that I perceive as a bit coarse.

(disclaimer- all with a 12V linear regulated power supply so far, not 24V)

It does have a airier/wider soundstage than the stock Xenos, but that's faaar from being my criterion #1 ... Although I'd always want to perceive a "natural" soundscape (which the stock 0HA-REP undoubtedly doesn't lack).
post #17 of 144
Quote:
Originally Posted by IEATTEFLON
Yes but that is the same with almost every product sold. I asked an engineer friend how much a headphone from Grado or Sennheiser line would cost to manufacture and it was something crazy like a average of 1000% markup of what they sell it for.
1:5 is the normal ratio for costly audiophile audio stuff, AFAIK.

Some Head-Fi sponsor brands are more reasonable.


And even in the worst of hypotheses, it's not that we have no alternatives.
post #18 of 144
I agree that both amps are excellent value. As to what sounds natural in the tonality, how can I explain that, the instruments sound clear and like instruments are supposed to sound. Since I am using different headphones and sources than Andrea, I don't know how we can make any really encompassing statements about the amps per se, without recognizing fully the role of sources and other components affecting the end product. Do these amps sound different with K 701's then with E 500's? Of course they do. All my characterizations of the relative sounds of these components are based on the sounds they produce with an IModed Ipod, a ALO cotton mini to mini cable and either Shure E 500's or ETY 4P/S. I am certainly not making any absloute claims for or against either amp, only offering my experience with specific equiptment, while fully respecting the right of others to differ based on their ears, equiptment, and taste.
post #19 of 144

opamp rolling

Quote:
Originally Posted by kaushama
And if Andrea's modded Xenos wins GO-VIBE 5, over stock stock Xenos, future XENOS will be better with OPAMP rolling capability. At least XENOS took it a point, when requested the option. So the competition between these two wonderful products will be intensified. End result will be better products in the range we all can afford.
Based on what I have read here, I think the amps designed around the faster op amps such as the 6171/6172 are not suitable for rolling, simply because these fast op amps are more susceptible to oscillations so great care must be taken on the circuit design. Past versions of the Go-Vibe did support rolling so I'm sure it's not an oversight, but a deliberate effort on Norm's part to skip the op amp rolling feature on the Go-Vibe 5. It's great to hear that future Xenos will support rolling (perhaps Go-Vibe 6 would too? ) but until then, let's stick with the current stock version of the Xenos (don't want to turn this into a DIY thread, do we?) and the Go-Vibe 5, shall we?
post #20 of 144
I think this is getting a bit silly, and of course this post will not make me any new friends.

We all have different ears, different cans, different music, different likes, different biases (even if we do not admit to them), etc. Therefore there is no best amp. We do have a better amp for a particular person/application.

Some individuals swear by the SR-71, others by The Hornet, Supermacro, Micro Amp, etc. If you think about it each in their own minds is correct. My opinion is no better than another person's or vice-versa. Yes it is possible that in a group of 10 six will prefer a particular amp. That still does not make it the best for everyone, just those 6 (IMO).

So lets keep a perspective that others will disagree and lets stop pushing our agenda unto others. We all have a right to an opinion.
post #21 of 144
Quote:
Originally Posted by Andrea
No way, IMO. Multiplying channels indefinitely ( ) doesn't imply multiplying sound quality. (The Go-Vibe v5 is the very first instance that comes to my mind...)

The chips are what makes the REAL difference (and secondly, the power supply stage is crucial, but here all Xenos amps are traditionally very solid). Whichever amp featuring, say, AD8397 or LM6171/2 chips inside (like the Supermini & perhaps Supermicro too) couldn't possibly ever trounce my Xenos (for my ears), even in a 1.000.000 channel design
Andrea, I am glad you love the Xenos modded or not. I would go as far as commending you on you zealousness with it. I have not heard it, perhaps just like you have not head Dr. Xin's Supermicro or Supermini specially with all the combinations possible due to their rolling capability.

Therefore neither you nor I can truly say which is better. We can only speculated on the sound. Even if both of us had all three amps and modded or rolled every OP amp available the best either one of us could say is which one we prefer. Which ever either of us prefers is just that an opinion, nothing else. It does not make our preference the best amp for the rest.
post #22 of 144
Quote:
Originally Posted by mrarroyo
Andrea, I am glad you love the Xenos modded or not. I would go as far as commending you on you zealousness with it. I have not heard it, perhaps just like you have not head Dr. Xin's Supermicro or Supermini specially with all the combinations possible due to their rolling capability.

Therefore neither you nor I can truly say which is better. We can only speculated on the sound. Even if both of us had all three amps and modded or rolled every OP amp available the best either one of us could say is which one we prefer. Which ever either of us prefers is just that an opinion, nothing else. It does not make our preference the best amp for the rest.
Well said, I can't but agree.

My purpose (as well as my wish if I were on the reader's side) is exclusively to have both directions well represented, as opposed to having one of them pretended to be the "only one" when it isn't.
post #23 of 144
Thread Starter 
Yes! Though I used the "best" term it is subjected to personal preference. But certainly there are several than "one". That is a very good status for newbie small companies like XENOS, that thrives to give best value for the customers.
If we had same PCB, parts and layout of Xenos, in a case and brand name of well reputed amp maker, I wonder the airyness and SQ will be the same or not!!!! Thats how biased audiophilia can be.
Anyway We can say "Xenos is one of the best amps under 100$ which will hopefully provide customers more options in future by OPAMP ROLLING"
post #24 of 144
Thread Starter 
Andrea you seem to have become a go-vibe convert??? What are the new positive attributes you found?
post #25 of 144
Thread Starter 
OK shall we list or mention the positive attributes of GO-VIBE against XENOS and vice versa. It seems in this price range these are the two amps to be reckoned with.
There may be people liking one or the other.

Xenos

Smaller size
balanced sound across the range
Less colouration
charging capability

Likewise....
post #26 of 144
I would like to add a thing or two when it comes to pricing units.
While it might seem unfair at the first glance that an amp consisting of parts worth around 50-100 $ sells for 350 $ keeping up a business is a difficult AND expansive task. You will have to stock up parts, you will to invest in advertising, keep customers happy, bla, bla, bla...and you will have to pay taxes unless some soldering guys on ebay.
If you want to support a family and lead a decent life you need to earn a few bucks to make up for all the pain and hardship of an own business.
post #27 of 144
Quote:
Originally Posted by dr.morton
I would like to add a thing or two when it comes to pricing units.
While it might seem unfair at the first glance that an amp consisting of parts worth around 50-100 $ sells for 350 $ keeping up a business is a difficult AND expansive task. You will have to stock up parts, you will to invest in advertising, keep customers happy, bla, bla, bla...and you will have to pay taxes unless some soldering guys on ebay.
If you want to support a family and lead a decent life you need to earn a few bucks to make up for all the pain and hardship of an own business.
Depends, whether this business is emerging or already well established for instance. Regardless, 7x is too much IMO. 5x is already a threshold (for me) with feeling somewhat... cheated.
post #28 of 144
Quote:
Originally Posted by kaushama
Andrea you seem to have become a go-vibe convert??? What are the new positive attributes you found?
A great inner detail resolution-texture, for instance. So much that you easily hear the 'air' surrounding voices and instruments. All this is with a 24V power supply.

Note that I haven't said I prefer it to my modded Xenos amp. This amp still sounds smoother, and more 'luminous', and has fantastic detail nonetheless. We'll see in a few days...
post #29 of 144
Thread Starter 
It seems, GO-VIBE's limiting factor as a portable amp is, its minimum operative voltage being given with 9v batteries. The optimal voltage for the amp seems to be 24V regulated, as Andrea experienced with it. Even the site says to have TD 9.4 V batteries for better performance.
post #30 of 144
Thread Starter 
The GO-VIBE 5 (GV5) seems to have more advanced topology out of the two though. Its 3 channel topology with rail splitted virtual ground scheme. It supposed to give less distortion in ground channel. When given optimal voltage at least in theory it is supposed give more detail and resolution.
The Xenos has a discrete power supply with virtual reference. It is based on pre-power 2 channel topology from the looks of the technical details. Isn't that so Andrea?
If it is so your modded amp being more rich in SQ gives us another example of multiplication of channels does not sometimes give incremental results. Of course if you are not biased of your own MOD!!!
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